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Friday, June 29, 2012

Charles Louis Alphonse Laveran...The Nobel Prize in Physiology or Medicine 1907

Charles Louis Alphonse Laveran
Charles Louis Alphonse LaveranThe Nobel Prize in Physiology or Medicine 1907 was awarded to Alphonse Laveran "in recognition of his work on the role played by protozoa in causing diseases".



Thursday, June 28, 2012

3 Unsokved mysteries..from the net

Placebo Effect







The placebo effect is when a persontakes something they believe is medicine for an ailment they are suffering(which is not really a medicine), and they get better. A placebo is an inert substance, and when taken (with the advice from others that it will cure them)makes


the person get better, simply because they were expecting or believed that it would work. Something similar, called the nocebo effect, is when aperson takes fake drugs and thinks they are experiencing problems that would have been caused by the real drugs. They have been known to reduce pain as well. Why they occur is mysterious and they are only one of the many complicated things related to the body-brain connection. In fact, our own bodies hold many unsolved mysteries.
Posted Image
 
Pan spermia







How didlife on earth appear? Science suggests that life started when the planetwas favourable for habitation. Yet did microscopic organisms just pop out ofnowhere? One hypothesis is panspermia, whichsuggests that €˜seeds of life€™ exist everywhere


around the universe, andthat life on earth started when these €˜seeds€™ came here, probably by ameteor. It also suggests that these


seeds are taken to other habitableplaces in the universe. Something similar to this is exo-genesis. It suggeststhat life was brought to


earth those billions of years ago, however it doesnot say that life is also taken to other habitable places. Somepeople


believe aliens brought life to our planet, as suggested by thetheories of Erich Von Daniken. Although some are sceptical as to how


lifecould exist in space and get carried to other planets, there is substantialevidence that certain life forms, like spores and


certain types of bacteria can actually exist in space, perhaps in a dormant state.
 
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Mass extinctions







From the death of the dinosaurs, to the disappearance of the creatures inthe Permian Era, mass extinctions are occurring even now.






Sometimes, the cause is clear. We are destroying the biosphere and the atmosphere, and scientists predict that in the next 100 years, 50% of all living species will become extinct. But sometimes, the realreason is unclear. It may have been due to competition from other species,


dramatic climate changes, or the impacts from an asteroid/meteor (the last one being quite a popular one). Yet some questions remain unanswered. Why was it that some species died out, and others survived,some to this day (famous example: the coelacanth).
During the extinction of the dinosaurs, crocodiles and turtles were around, but they survived, even to this day, while the dinosaurs, the pterosaurs, the marine reptiles and others died out. While some people believe that those species were unable to cope with the (possibly) new surroundings, others are not convinced. To this day,they are a mystery, and without a time machine, we may never know. Other popular theories include:- flood basalt events,smaller asteroid showers, global warming/cooling, sea level drops.
 
Camillo GolgiSantiago Ramón y Cajal

Camillo Golgi           

Santiago Ramón y Cajal

The Nobel Prize in Physiology or Medicine 1906 was awarded jointly to Camillo Golgi and Santiago Ramón y Cajal "in recognition of their work on the structure of the nervous system"

Abstract



Camillo Golgi and Santiago Ramón y Cajal were the two main investigators that revealed the morphological organization of the cerebellar cortex, although they never shared the same basic concepts. While for Golgi all axons fused into a large syncytium (the diffuse nerve network), for Cajal they had free endings and communication between neurons was done by contiguity not by continuity. The classical diagrammatic representation of the cerebellar circuitry shown by Cajal in his Croonian lecture (1894), although still valid, has drastically change by the accumulation of the great amount of data generated from 1894 to our days. The topic of this review is to briefly summarize this new knowledge, and to confront it with Cajal's concepts, to determine whether or not the added complexity to the circuit invalidates the Cajal's principles. Our conclusion is that although most of these principles are consolidated, the applicability of the law of dynamic polarization does not adapt to some of them.

Wednesday, June 27, 2012

Robert Koch..1905

Robert Koch
Robert Koch



The Nobel Prize in Physiology or Medicine 1905 was awarded to Robert Koch "for his investigations and discoveries in relation to tuberculosis".

Tuesday, June 26, 2012

Ivan Petrovich Pavlov


Ivan Petrovich Pavlov
The Nobel Prize in Physiology or Medicine 1904 was awarded to Ivan Pavlov "in recognition of his work on the physiology of digestion, through which knowledge on vital aspects of the subject has been transformed and enlarged".


Ivan Petrovich Pavlov
Learning Theories







When we talk of learning we usually think of something related to the classroom, such as English or Maths. However, Psychologists refer to learning as a relatively permanent change in behaviour as a result of experience'. Learning is a fundamental process in all animals and the higher up the evolutionary scale the animal, the more important is the ability to learn. All animals need to adapt their behaviour in order to fit in with the environment and to adapt to changing circumstances in order to survive.






Much of our behaviour consists of learned responses to simple signals. Can all behaviour be analysed in the same way? Some psychologists believe that behaviour is the sum of many simple stimulus-response connections. However there are other psychologists who think that stimulus-response is too simplistic and that even simple responses to stimuli require the processing of a vast amount of information.






The Behaviourists are a group of psychologists who focus on these stimulus-response connections, the two most famous being Watson and Skinner. Behaviourism arose because there was dissatisfaction with approaches in psychology that involved 'unscientific, techniques such as introspection and dealt with unmeasurable aspects of behaviour such as the role of the unconscious mind. Behaviourists try to explain the causes of behaviour by studying only those behaviours that can be observed and measured. They leave focused their efforts on two types of learning processes known as classical conditioning and operant conditioning.






Classical Conditioning






This is learning by association. A Russian physiologist called Ivan Pavlov, studied salivation in dogs as part of his research programme. Normally, dogs will salivate at the when food is presented, but Pavlov was interested why the dogs had started to salivate when the saw the people that usually fed them (they also responded to the sound of the dishes being used for their meals). Pavlov set up an experiment to find out if the dogs could be trained to salivate at other stimuli such as the sound of a bell or a light. At feeding times, Pavlov would ring a bell and the amount of saliva produced by the dog was measured. After several 'trials' Pavlov rang the bell without presenting the food and found that the dogs salivated in the same way as if food was being presented.






You will note that the conditional response is the same as the unconditioned response, the only difference being that the response is evoked by a different stimulus.






The Classical Conditioning Procedure:






In scientific terms, the procedure for this is as follows.






1 Food is the unconditioned stimulus or UCS. By this, Pavlov meant that the stimulus that elicited the response occurred naturally.






2 The salivation to the food is an unconditioned response (UCR), that is a response which occurs naturally.






3 The bell is the conditioned stimulus (CS) because it will only produce salivation on condition that it is presented with the food.






4 Salivation to the bell alone is the conditioned response (CR), a response to the conditioned stimulus.
























Sunday, June 24, 2012

The Nobel Prize in Physiology or Medicine 1902

Ronald Ross

Ronald Ross

The Nobel Prize in Physiology or Medicine 1902 was awarded to Ronald Ross "for his work on malaria, by which he has shown how it enters the organism and thereby has laid the foundation for successful research on this disease and methods of combating it".

Ronald Ross, son of an Army Major, a brilliant and polyvalent mind, poet of romantic lyrics, part time novelist, playwright, painter, musician and mathematician, who never wanted to be a medical practitioner, became a researcher by accident, designed some of the most elegant experiments with sheer instincts and his own shrewd observations and ultimately won the second ever Nobel Prize in Medicine in the year 1902. Having faced a lot of hardship and administrative interference and apathy (what he called "administrative barbarism") and spent from his own pocket to pay the assistants and 'volunteers' for his research, he converted adversity to advantage and overcame all odds with his single minded pursuit to carry out his well designed and elegant experiments. With his penchant for writing, he has left for posterity detailed and poetic accounts of his path-breaking research and work thereafter.onald Ross, son of an Army Major, a brilliant and polyvalent mind, poet of romantic lyrics, part time novelist, playwright, painter, mRusician and mathematician, who never wanted to be a medical practitioner, became a researcher by accident, designed some of the most elegant experiments with sheer instincts and his own shrewd observations and ultimately won the second ever Nobel Prize in Medicine in the year 1902. Having faced a lot of hardship and administrative interference and apathy (what he called "administrative barbarism") and spent from his own pocket to pay the assistants and 'volunteers' for his research, he converted adversity to advantage and overcame all odds with his single minded pursuit to carry out his well designed and elegant experiments. With his penchant for writing, he has left for posterity detailed and poetic accounts of his path-breaking research and work thereafter.

Wednesday, June 20, 2012

Emil Adolf von Behring..First Nobel Prize in Medicine and Physiology

Emil Adolf von BehringEmil Adolf von Behring



The Nobel Prize in Physiology or Medicine 1901 was awarded to Emil von Behring "for his work on serum therapy, especially its application against diphtheria, by which he has opened a new road in the domain of medical science and thereby placed in the hands of the physician a victorious weapon against illness and deaths".
 
Emil Adolph von Behring was born on March 15, 1854, at Forsthausen, West Prussia. After training at the University of Berlin and passing the state medical examination in 1880, he entered the army medical service. While in the service, he worked for a time with K. Binz, pharmacologist and chemist, on iodoform, a chemical homolog of chloroform, which was then considered highly effective as a dusting powder for the treatment of deep ulcers. In 1889 he joined the staff of the Robert Koch Institute of Hygiene in Berlin, and it was there that his outstanding contributions were produced.



When Behring began his experiments, the germ theory of disease was becoming well established and immunology was a rapidly developing discipline. In Koch's laboratory Behring worked with the eminent Japanese bacteriologist S. Kitasato. In 1890 Behring presented two papers, one with Kitasato, discussing the immunity of animals to diphtheria and tetanus. They demonstrated that certain substances (antitoxins) in the blood serum of both humans and animals who had recovered from the disease, either spontaneously or by treatment, showed preventive and curative properties. Animals injected with this immune blood were shown to be resistant to fatal doses of bacteria or toxin. Further, animals treated with the serum after contracting the disease could be cured.


For prophylactic immunization against diphtheria, Behring suggested the injection of a mixture of toxin and antitoxin. This method, the forerunner of modern disease prevention, became practicable when certain reagents, for example, formaldehyde, were added to the mixture to produce a "toxoid"; the reagents preserved the immunizing property of the mixture while removing its poisonous characters.


For these advances in serum therapeutics, Behring received the Nobel Prize in 1901, being the first medical man so honored; he was also created privy councilor with the title of Excellenz and received many distinctions and prizes. For the discovery of antitoxins and the development of vaccinations, Behring was honored with the epithet "Children Savior." When he contracted pneumonia, he was already in a weakened state of health and was unable to withstand the strain. He died in Marburg on March 31, 1917.









Tuesday, June 19, 2012

Barbie doll

The first Barbie doll shown at New York Toy Fair in 1959.
                                                                                                                      The first Barbie doll shown at New York Toy Fair in 1959.



The Barbie doll was invented in 1959 by Ruth Handler (co-founder of Mattel), whose own daughter was called Barbara. Barbie was introduced to the world at the American Toy Fair in New York City. Barbie's job was teenage fashion doll. The Ken doll was named after Ruth's son and was introduced two years after Barbie in 1961.



 Handler paid $500000 to become the sole sponsor of the doll
Barbie Facts & Technology






The full name of the first doll was Barbie Millicent Roberts, from Willows, Wisconsin. Barbie's job was that of teenage fashion model. However, the doll has been made in versions connected to over 125 different careers.


She came as either a brunette or blond, and in 1961 red hair was added. In 1980, the first African American Barbie and Hispanic Barbie were introduced, however, Barbie did have a black friend named Christie who was introduced in 1969.






The first Barbie was sold for $3. Additional clothing based on the latest runway trends from Paris were sold, costing from $1 to $5. In the first year (1959), 300,000 Barbie dolls were sold. Today, a mint condition "#1" (1959 Barbie doll) can fetch as much as $27,450. To date, over 70 fashion designers have made clothes for Mattel, using over 105 million yards of fabric.






There has been some controversy over Barbie Doll's figure when it was realized that if Barbie was a real person her measurements would be an impossible 36-18-38. Barbie's "real" measurements are 5 inches (bust), 3 ¼ inches (waist), 5 3/16 inches (hips). Her weight is 7 ¼ ounces, and her height is 11.5 inches tall.






In 1965, Barbie first had bendable legs, and eyes that open and shut. In 1967, a Twist 'N Turn Barbie was released that had a moveable body that twisted at the waist.






The best-selling Barbie doll ever was 1992 Totally Hair Barbie, with hair from the top of her head to her toes.

Barbie turns 50!










Monday, June 18, 2012

Top ten facts you should know about epic French Cup final

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Paris: Novak Djokovic, who rose to glory in 2011, became the World No. 1, yet he managed to reach the final of the Roland-Garros for the first time in his career only in this year. Here are top 10 interesting facts about the intriguing encounter.







• Rafael Nadal has now won French Open for record seven times. He surpassed legend Bjorn Borg who won the tournament six times. Rafa now shares the feat with former women tennis player Chris Evert, who won the women’s singles Roland-Garros seven times.






• Nadal ended Djoker’s 27-match winning streak in Grand Slams, which was just two wins short of Rod Laver’s tally who won 29 in a row from the start of the Australian Open in 1969 through to Wimbledon 1970.






• Nadal and Djokovic were facing each other in the fourth consecutive Grand Slam final, which is also an Open Era record.






• It was for the first time that the French Open did not finish on the allotted Sunday, as the match was suspended due to rain.






• Djoker became the only player to have won a set against Nadal in French Open 2012.






• Spain now holds the command in terms of men’s singles titles here at Roland Garros. Nadal’s seventh win was the 13th for the country overall. Andres Gimeno (1), Sergi Bruguera (2), Carlos Moya (1), Albert Costa (1) and Juan Carlos Ferrero (1) are the other Spaniard’s who have emerged victorious at the Roland Garros.






• Djokovic was seeking to become the first man in 43 years to win four Grand Slam tournaments in a row. Rod Laver in 1969 won four straight major titles.






• This seventh French Open title was Nadal’s 11th Grand Slam. He has achieved this feat at the age of 26 years and 7 days, making him the third-youngest player to do so, after Borg (25 years and one day) and Roger Federer (25 years and 334 days).






• Since his French Open debut in May 2005, Rafa is 52-1 for his career at the tournament now and has defeated Djokovic four times.






• This was Nadal's 11th Grand Slam title. The ones who have won more Grand Slams are Roger Federer (16), Pete Sampras (14) and Roy Emerson (12).






Sunday, June 17, 2012

Interesting facte about the world.

Meteora Factas:
Meteora, an area that attracts thousands of tourists from all over the world every year is situated in Greece. Meteora is famous for its monasteries that are built on eroded rocks. The name itself means "suspended in the air". The monks built these monasteries on the top of the rocks. Earlier there were many monasteries but now only six are left. Meteora was inhabited by hermit monks first.


MOUNT PELEE
Mount Pelee is a volcano located on the French island of Martinique in the Caribbean. it is well known for his destructive past. It was the early morning, may 8th in 1902, when eruption started destroying everything in its path. Killing in one day more than 30000 people. Completely destroying the city of Saint-Pierre, leaving only two survivors. 


FACTS ABOUT ASIA:
The continent largest in landmass and that of population is Asia. Asia has the world's 60% of population that accounts to almost 4 billion people. The statistics prove that two countries hold half of Asia's population; one being India and other is China. Though China is ahead India but it is believed that in another 20 years India will have the highest population. The boundaries of Asia are made of Suez Canal and Ural Moun..

Saturday, June 16, 2012

Top ten inventions

An Oldowan tool, the earliest type of stone tool. These were used by hominins in Africa from 2.6 million years ago up until 1.7 million years ago.



Credit: José-Manuel Benito Álvarez
Creative CommonsA history of ingenuityHumans are an ingenious species. From the moment someone bashed a rock on the ground to make the first sharp-edged tool, to the development of Mars rovers and the Internet, several key advancements stand out as particularly revolutionary. These are our picks for the 10 most important inventions of all time.
2)
Before the invention of the wheel in 3500 B.C., humans were severely limited in how much stuff we could transport over land, and how far. Wheeled carts facilitated agriculture and commerce by enabling the transportation of goods to and from markets, as well as easing the burdens of people traveling great distances. Now, wheels are vital to our way of life, found in everything from clocks to vehicles to turbines.

Without nails, civilization would surely crumble. This key invention dates back more than 2,000 years to the Ancient Roman period, and became possible only after humans developed the ability to cast and shape metal. Previously, wood structures had to be built by interlocking adjacent boards geometrically — a much more arduous construction process.



Meanwhile, the screw — a stronger but harder-to-insert fastener — is thought to have been invented by the Greek scholar Archimedes in the third century B.C.
The compassAncient mariners navigated by the stars, but that method didn't work during the day or on cloudy nights, and so it was unsafe to voyage far from land.




The Chinese invented the first compass sometime between the 9th and 11th century; it was made of lodestone, a naturally-magnetized iron ore, the attractive properties of which they had been studying for centuries. (Pictured is a model of an ancient Chinese compass from the Han Dynasty; it is a south-indicating ladle, or sinan, made of polished lodestone.) Soon after, the technology passed to Europeans and Arabs through nautical contact. The compass enabled mariners to navigate safely far from land, increasing sea trade and contributing to the Age of Discovery.
The printing pressThe German Johannes Gutenberg invented the printing press around 1440. Key to its development was the hand mold, a new molding technique that enabled the rapid creation of large quantities of metal movable type. Printing presses exponentially increased the speed with which book copies could be made, and thus they led to the rapid and widespread dissemination of knowledge for the first time in history. Twenty million volumes had been printed in Western Europe by 1500.



Among other things, the printing press permitted wider access to the Bible, which in turn led to alternative interpretations, including that of Martin Luther, whose "95 Theses" — a document printed by the hundred-thousand — sparked the Protestant Reformation.
 
The internal combustion engineIn these engines, the combustion of a fuel releases a high-temperature gas, which, as it expands, applies a force to a piston, moving it. Thus, combustion engines convert chemical energy into mechanical work. Decades of engineering by many scientists went in to designing the internal combustion engine, which took its (essentially) modern form in the latter half of the 19th century. The engine ushered in the Industrial Age, as well as enabling the invention of a huge variety of machines, including modern cars and aircraft.



Pictured are the operating steps of a four-stroke internal combustion engine. The strokes are as follows: 1) Intake stroke - air and vaporised fuel are drawn in. 2) Compression stroke - fuel vapor and air are compressed and ignited. 3) Power stroke - fuel combusts and piston is pushed downwards, powering the machine. 4) Exhaust stroke - exhaust is driven out.
 
The telephoneThough several inventors did pioneering work on electronic voice transmission (many of whom later filed intellectual property lawsuits when telephone use exploded), Alexander Graham Bell was the first to be awarded a patent for the electric telephone in 1876. His patent drawing is pictured above.



The invention quickly took off, and revolutionalized global business and communication.
The light bulbWhen all you have is natural light, productivity is limited to daylight hours. Light bulbs changed the world by allowing us to be active at night. According to historians, two dozen people were instrumental in inventing incandescent lamps throughout the 1800s; Thomas Edison is credited as the primary inventor because he created a completely functional lighting system, including a generator and wiring as well as a carbon-filament bulb like the one above, in 1879.



As well as initiating the introduction of electricity in homes throughout the Western world, this invention also had a rather unexpected consequence of changing people's sleep patterns. Instead of going to bed at nightfall (having nothing else to do) and sleeping in segments throughout the night separated by periods of wakefulness, we now stay up except for the 7 to 8 hours allotted for sleep, and, ideally, we sleep all in one go.

PenicillinIt's one of the most famous discovery stories in history. In 1928, the Scottish scientist Alexander Fleming noticed a bacteria-filled Petri dish in his laboratory with its lid accidentally ajar. The sample had become contaminated with a mold, and everywhere the mold was, the bacteria was dead. That antibiotic mold turned out to be the fungus Penicillium, and over the next two decades, chemists purified it and developed the drug Penicillin, which fights a huge number of bacterial infections in humans without harming the humans themselves.



Penicillin was being mass produced and advertised by 1944. This poster attached to a curbside mailbox advised World War II servicemen to take the drug to rid themselves of venereal disease.
 
ContraceptivesNot only have birth control pills, condoms and other forms of contraception sparked a sexual revolution in the developed world by allowing men and women to have sex for leisure rather than procreation, they have also drastically reduced the average number of offspring per woman in countries where they are used. With fewer mouths to feed, modern families have achieved higher standards of living and can provide better for each child. Meanwhile, on the global scale, contraceptives are helping the human population gradually level off; our number will probably stabilize by the end of the century. Certain contraceptives, such as condoms, also curb the spread of sexually transmitted diseases.



Natural and herbal contraception has been used for millennia. Condoms came into use in the 18th century, while the earliest oral contraceptive — "the pill" — was invented in the late 1930s by a chemist named Russell Marker.
 

The Internet



The InternetIt really needs no introduction: The global system of interconnected computer networks known as the Internet is used by billions of people worldwide. Countless people helped develop it, but the person most often credited with its invention is the computer scientist Lawrence Roberts. In the 1960s, a team of computer scientists working for the U.S. Defense Department's ARPA (Advanced Research Projects Agency) built a communications network to connect the computers in the agency, called ARPANET. It used a method of data transmission called "packet switching" which Roberts, a member of the team, developed based on prior work of other computer scientists. ARPANET was the predecessor of the Internet.



Friday, June 15, 2012

A few more inventions that affected mankind

Invention of the Automobile




Posted as a Famous Invention on December 20, 2011 with 15 comments


The invention of the car can be traced back as far as 1769, when one Nicolas-Joseph Cugnot devised the very first concept - a complex, three wheeled steam engine. The idea never really took off, as it could not compete with horse powered transportation which were easier to handle, faster, less expensive and more commercially viable. Horses were at the heart of the transport industry, with every single business relying on horses to pull their vehicles. At that moment, every specification correlated into horse terms. The steam train was named the iron horse, the bicycle was named the poor man's horse and the trolley car was named the horseless carriage. Horsepower was used to define...


Invention of the Steam Engine


Posted as a Famous Invention on September 2, 2011 with 6 comments


The invention of the engine has played a major role in the environment we live in today - surrounded by transport and industries all reliant on an engine of some description. The engine we see today is a progression of the steam engine, using the same principles, but applied in a more developed manner in the modern world. Every single engine works the same way - a conversion of burning fuel into kinetic energy. It's near enough impossible to imagine a world without the engine, so let's look at the history of the engine and how it has come to the forefront of our industrialized world. The first incarnations of the steam engine were wood-powered, before coal was discovered as a...


Invention of the Airplane


Posted as a Famous Invention on January 12, 2011 with 8 comments


The discovery of the airplane brought along development in the transport system. The transport system improved following the invention of airplane. Now the time taken to travel long distances has reduced due to the invention of airplane. The speed of an airplane is so high that it does not take long to reach any place throughout the world. The convenience of sight-seeing in all the famous places in far away places has now increased. Slowly and gradually, emergencies are becoming easier to handle after the invention of airplane. Thus, the airplane has the ability to take the position of a lifesaver. In recent days, nations have experimented on the various uses of airplane. Thus, now the...


Invention of the Wheel


Posted as a Famous Invention on December 24, 2010 with 7 comments


We cannot imagine our lives without any kind of movement. Similarly, as we move from one place to another, either the inanimate objects are forced to move or they have some inbuilt machine. Wheels are the most ancient discovery for humankind. The wheels on a kid's car, the different sizes and shapes that we can see around us are always a matter of joy for many. However, none of us question the fact of how the wheel was discovered? Wheels have made it easier for all of us to travel. The creation of wheels is perhaps the significant discovery. It is unbelievable to visualize the globe with no wheels around. As soon as the wheel was invented, there was a revolt in the manufacturing...


Invention of the Camera


Posted as a Famous Invention on December 18, 2010 with 31 comments


It is next to impossible to capture a photo without a camera. A camera is a device, which enables the recording of still and moving photographs within seconds. Without camera, it was never possible to capture good memories. Camera was first designed by Joseph N. Niepce, who was from France, a retired Military Officer. He invented the first camera in 1826 in France. His camera known as "Obscura" had two wooden boxes out of which one box had a lens and the other had a screen, which was green in color. He then invented a diaphragm, which helped in the clarity of the image by sharpening the image. The first discovery of the camera was made by a German Mathematician, Friedrich...


Invention of the Radio


Posted as a Famous Invention on December 7, 2010 with 12 comments


Radio was a great achievement in the terms of communication between people. Radio was not a direct or immediate invention. One can call radio as one of the effects of the telephone and telegraph inventions. The inventors of telephone and telegraph had already introduced the technology of wire-to-wire communication. Thus, the inventor of radio based his invention on the technology of telephone and telegraph. This invention did not happen all of the sudden. The discovery of radio waves actually set the platform for the invention of radio. Radio waves are electromagnetic waves that can carry information in the form of pictures, sound and other details. Various people contributed towards...


Invention of the Barcode


Posted as a Famous Invention on March 17, 2010 with 22 comments


Perhaps one of the most under rated inventions belongs to the barcode. Barcodes aren't given much thought by the majority of consumers, but these codes were fairly recently implemented, in a working fashion, in 1970. A small food store owner decided one day that keeping records of the inventory of his stock and their associated prices was an extremely laborious process and so, in 1948, he took it upon himself to contact The Drexel Institute of Technology in a bid to work towards a feasible solution. Bernard Silver rose to the challenge and set out to investigate this problem, and began working on a solution involving an automatic way of keeping track of items which had been sold....


Invention of the Internet


Posted as a Famous Invention on March 3, 2010 with 80 comments


The Internet is something which many of us now take for granted, but the invention of the Internet, is still recent. The Internet is essentially a network connecting thousands of smaller networks into a single global network. The Internet model and the Transmission Control Protocols used to implement the idea were developed in 1973 by Vinton Cerf, an American computer scientist. His project was backed by the United States Department of Defense Advanced Research Projects Agency (ARPA), directed by Robert Khan, an American engineer. The Internet initially was used to connect University networks and research labs within the United States. The World Wide Web, as we now know it, was...


Invention of the Printing Press


Posted as a Famous Invention on February 2, 2010 with 21 comments


The invention of the printing press took place in approximately 1450 AD, by a German inventor by the name of Johannes Gutenburg. During this time, there were many cultural changes in Europe which sparked the requirement of a quick, inexpensive method of producing large amounts of documents. Gutenberg received investment from banks and local business in order to work on a viable solution. Gutenberg's original concept remained relatively unchanged until the 19th century. In the early 1800's, the advancements in technologies meant that the printing press had to be amended to cope with the modern world and growing demand. Iron materials replaced wooden materials for printing, which...


Invention of the Computer


Posted as a Famous Invention on January 6, 2010 with 44 comments


Personal computers are now commonplace in most homes throughout the world, and are relied on heavily by both individuals and businesses. The invention of the computer is relatively new, emerging into our lives relatively late in the 20th century. The technology to build such intricate and sophisticated systems was simply not available prior to this, though advancements in microelectronics made the vision of a computer a realistic one. The two innovations in electronics which allowed for this were the integrated circuit, which was manufactured in 1959, and the microprocessor, which appeared in 1971. The integrated circuit allowed the internal memory solutions to be shrunken down into...


Invention of the Light Bulb


Posted as a Famous Invention on August 27, 2009 with 53 comments


The very first electric light was invented as early as 1800 by English inventor, Humphry Davy. Through various experimentations with electricity, he invented a basic electric battery, soon followed by electric light once he realised that carbon glowed, producing light when connected to the battery. This reaction is called an electric arc. In 1860, Sir Joseph Wilson Swan set about attempting to develop a practical, long-lasting form of electric light. It was he who realised that carbon paper filament worked well, however did burn up relatively quickly. In 1878, his new lamp inventions were showcased in Newcastle, England. 1877 saw American Charles Francis Brush develop a series...


Invention of the Telephone


Posted as a Famous Invention on August 3, 2009 with 46 comments


One of the most important and revolutionary inventions which impacts greatly upon modern day communication is the invention of the telephone. The idea behind the telephone is simple, a system which converts sound into a series of electrical impulses of differing frequencies, and then reverses this procedure to re-create the sound, typically a human voice. Sounds simple enough, but it took many years and an array of different inventors to finally succeed with the technology. As early as 1831, Michael Faraday proved that vibrations of metal could be converted into electrical impulses. This was the basic principle of the telephone, but no one made use of such technology until 1861,...


Invention of the Television Set


Posted as a Famous Invention on March 4, 2007 with 30 comments


The televison set was invented by not one person but a group of numerous personnel. The principal idea was based on photoconductivity of the element selenium, founded by Willoughby Smith in 1873. All televisions make use of an image which is scanned to produce a representation time signal, which is then reversed and decoded by the human eye. On 26 January 1926, John Logie Baird demonstrated the first public television, which transmitted live moving images. Several months later, 3 July 1928, Baird demonstrated the first colour television. In 1923, Charles Francis Jenkin demonstrated his own version of a primitive television set. Strangely...


Thursday, June 14, 2012

1. Wheel



Almost every other great invention that followed seems to have a wheel somewhere as its part. No one knows when the wheel was first invented, but it started life as a potter’s wheel and then it gave mobility to the prehistoric man, and later it helped to run machines and car and cycles and many other items. Today, the automobile can really be considered to be a spin-off from the wheel
2. Aeroplane
Airplane
The continents would have continued to live in isolation without this means of travel. The world has now become closer and more compact ever since airplanes began flying across water and land.

3. Light bulb
Light Bulb

The incandescent light bulb is now being phased out for more energy efficient ones, but from 1879 when it was first used for 13.5 hours by Edison, it has been one of the most used inventions in modern day life. Can you visualise a life without it?
4. Internet
Internet

Originally a secret Pentagon project, the Internet has changed the process of knowledge gathering and storing. Communication systems between individuals and corporations are now totally based on the Internet systems. Everyone has easy access to information and the ability to communicate the written word faster. Postal mail has now become ‘snail mail’ and encyclopedias have begun to gather dust in most homes
5. PCs
Computer

Computers have changed the way we work and think.  Data is now stored in a machine, more than in our mind or in books, and calculations and processes became simpler. Computers were large and cumbersome in the beginning, but now they fit in your pocket and in the palm of your hand. Today they run appliances and space stations, they have assist surgeries and store backend processes, and they make homework easier!
6. Telephone
Telephone
The telephone definitely deserves to be on this list due to the communication barriers that it broke. The ability to talk to anyone, anywhere at any time is something we value tremendously in our lives and this would not have been possible without a telephone.
7. Penicillin

8. iPhone

9. Flushing toilet

10. Combustion engine

11. Contraceptive pill

12. Washing machine

13. Central heating

14. Fridge

15. Pain killers

16. Steam engine
Steam Engine
An invention which has now been phased out and been given the tag of an antique, the Steam Engine made a tremendous impact on our lives while it was there. It made land transport easier, and it spearheaded the Industrial Revolution.

17. Freezer

Audiffren Singrün Refrigerating Machine - first sealed machine
Refrigeration is the process of removing heat from an enclosed space, or from a substance, to lower its temperature. A refrigerator uses the evaporation of a liquid to absorb heat. The liquid, or refrigerant, used in a refrigerator evaporates at an extremely low temperature, creating freezing temperatures inside the refrigerator. It's all based on the following physics: - a liquid is rapidly vaporized (through compression) - the quickly expanding vapor requires kinetic energy and draws the energy needed from the immediate area - which loses energy and becomes cooler. Cooling caused by the rapid expansion of gases is the primary means of refrigeration today.



18. Camera
The first camera that was small and portable enough to be practical for photography was built by John Strognofe in 1685.



19. Cars


The first self-propelled car was built by Nicolas Cugnot in 1769 which could attain speeds of up to 6 km/hour. In 1771 he again designed another steam-driven engine which ran so fast that it rammed into a wall, recording the world’s first accident.
20. Spectacles
The first eyeglasses were made in Italy at about 1286, according to a sermon delivered on February 23, 1306 by the Dominican friar Giordano da Pisa (ca. 1255 - 1311): "It is not yet twenty years since there was found the art of making eyeglasses, which make for good vision.


21. Mobile phones
Engel and Frenkiel photo courtesy National Medal of Technology
Today's communications industry would not be what it is without the contributions made by Richard H. Frenkiel and Joel S. Engel. The big breakthrough came when AT&T Labs researchers Frenkiel and Engel divided wireless communications into a series of cells, then automatically switched callers as they moved so that each cell could be reused. This led to the development of cellular phones and made today’s mobile communications possible.

22. Toilet paper

23. Hoover...Vaccum Cleaners


William Hoover financed additional improvements to Spangler's vacuum cleaner. The Hoover design resembled a bagpipe attached to a cake box, but it worked. William Hoover's company produced the first commercial bag-on-a-stick upright vacuum cleaner. Initial sluggish sales were given a kick by Hoover's innovative 10 day, free home trial, and eventually there was a Hoover vacuum cleaner in nearly every home. By 1919, Hoover cleaners were widely manufactured complete with the "beater bar" to establish the time honoured slogan "It beats as it sweeps as it cleans".
24. Trains

James Watt, a Scottish inventor and mechanical engineer, was responsible for improvements to the steam engine of Thomas Newcomen, hitherto used to pump water out of mines. Watt developed a reciprocating engine, capable of powering a wheel. Although the Watt engine powered cotton mills and a variety of machinery, it was a large stationary engine. It could not be otherwise; the state of boiler technology necessitated the use of low pressure steam acting upon a vacuum in the cylinder, and this mode of operation needed a separate condenser and an air pump. Nevertheless, as the construction of boilers improved, he investigated the use of high pressure steam acting directly upon a piston. This raised the possibility of a smaller engine, that might be used to power a vehicle, and he actually patented a design for a steam locomotive in 1784. His employee William Murdoch produced a working model of a self propelled steam carriage in that year.[18]
25. Google

26. Microwave

27. Email

28. The pen

29. Hot water

30. Shoe

31. Compass

32. Ibuprofen

33. Toothbrush

34. Hair straighteners

35. Laptops

36. Knife and fork

37. Scissors

38. Paper

39. Space travel

40. Kettle

41. Laser
Laser
Medical Science owes a lot of its phenomenal progress to the invention of laser. It has made micro- surgery possible, and made CD players and laser printers household items.

Wednesday, June 13, 2012

Thomas Edison Inventions

Edison







Edison was a prolific inventor with over 1,093 patents. Most of the Thomas Edison inventions were for electrical, chemical and mechanical devices or processes.

Edison's Menlo Park Laboratory, removed to Greenfield Village at Henry Ford Museum in Dearborn, Michigan. (Note the organ against the back wall)




Early Years






Edison left school at the age of 7 and was educated by his mother at their home in Port Huron, Michigan.






Nancy Edison would borrow books from the library and read them to her son to encourage his passion for learning.






Edison was interested in books that showed how things were made and how to conduct experiments.






When he was a teenager, he got a job selling newspapers to passengers on the day-train that traveled from his hometown to Detroit and back. The train would have a layover of a few hours in Detroit before returning to Port Huron.






Edison received permission from the railroad to do chemistry experiments in the baggage car while waiting for the return trip.






Working at the railway provided the young Edison with a unique experience. He was able to observe and learn more about steam engines, electricity and the telegraph, but he also was learning how to interact and sell to people.






Understanding how others purchased goods based upon cost and benefits had a great influence on his career and on his methods of invention.








Thomas Edison was interested in practical applications rather than theory.






He wanted to know how something would work rather than the theory of why it worked that way.






He was not as interested in discovering something new, as much as he was interested in discovering how something new could be improved - so it would be a viable benefit to others.






Many of the Thomas Edison inventions were substantial improvements to existing products that were not marketable. In this regard, Edison was as much an entrepreneur and investor as he was an inventor.






These improvements allowed many of the Thomas Edison inventions to be successfully commercialized.












Telegraph






Edison left the railroad and took a job as a telegraph operator for Western Union.






He wanted to know how a telegraph worked so he would take it apart and reassemble it.






He eventually made dozens of technical improvements to the telegraph.






The most significant innovation allowed for multiple messages to be sent and received simultaneously over the same wire. This was completely new and it transformed the telegraph industry.






Edison filed for patents and sold his invention to Western Union.






There is an amusing story that Edison tells about his meeting with Western Union.






Light bulb


Extravagant displays of electric lights quickly became a feature of public events, as in this picture from the 1897 Tennessee Centennial Exposition.


The electric light bulb is an example of one of the Thomas Edison inventions that took an existing idea and made significant improvements so it could be sold as a viable benefit to others.






Humphry Davy, an English scientist, discovered that carbon would glow when it received an electrical current. Sir Joseph Swan, also an English scientist, discovered that a carbon paper filament would glow better but was not long-lasting.






The concept of electric light was a unique invention, however, if the glowing carbon only lasted briefly then it had no viable benefit compared to the gas lighting that most homes were using.






So Edison decided to employed research assistants, many of whom were scientists, to conduct thousands of experiments to find a carbon composition that would glow brightly and be long-lasting.






He sent people all over the world to look for plant materials that could be used in his experiments.






A new filament material was created and placed within a bulb, which created light for more than 1500 hours.






A manufacturing process was also patented that would mass produce the light bulbs at an economic cost that was affordable and profitable.






Edison's intention was to provide better lighting, at a lower cost and higher profit, than gas companies. So he also created an entire system (cable wiring, generating stations, meters) that would supply electricity to homes.






All of this research was conducted at his Menlo Park Laboratory. The Laboratory was actually two city blocks of buildings purchased from a failed real estate developer in Raritan Township, New Jersey.
Leonard Cushing Kinetograph 1894.ogvThe June 1894 Leonard–Cushing bout. Each of the six one-minute rounds recorded by the Kinetoscope was made available to exhibitors for $22.50.[56] Customers who watched the final round saw Leonard score a knockdown.






Many of the worlds top scientists and inventors, such as Nikola Tesla and Reginald Fessenden, worked for Edison at this facility.






John Ott, Jonas Aylsworth, Lewis Latimer, Ezra Gilliland, George M Phelps, Arthur Kennelly and Josph B Stearns were some of the other inventors that worked with Edison.






Edison used methods similar to his friend, Henry Ford, who was also an inventor. Ford did not invent the automobile but invented methods of mass producing automobiles so that they were affordable.






One of the Thomas Edison inventions that helped Ford was the car battery.






Ingenuity






The ingenuity of the Thomas Edison inventions was the research behind them. This research was extensive and thorough. Edison created products that people wanted, that they could afford, and that he could manufacture for a profit.






Edison would determine needs and fulfill them. When electricity was introduced to homes, people were concerned about getting shocked or electrocuted.






Electricity was something new and mysterious. People were worried that bolts of current could fly out of the outlets on their walls. They believed this was possible if nothing was plugging the holes in the outlets.






Instead of explaining how this was improbable, which people wouldn't understand, Edison decided to invent and market covers to put over the outlets. Consumers bought them and felt a lot better and more comfortable.






Edison was as gifted an entrepreneur as he was an inventor, which explains to a large extent his success.
Edison with his phonograph