Safety razors Main article: Safety razor

Safety razorsMain article: Safety razor.

A modern double-edged safety razorThe first safety razor protected the skin from all but the very edge of the blade and was invented in the late 19th century by a Frenchman, Jean-Jacques Perret, who was inspired by the joiner's plane. In 1875 it was marketed by the Kampfe Brothers as "the best available shaving method on the market that won’t cut a user, like straight steel razors."

In 1901, the American inventor King Camp Gillette, with the assistance of William Nickerson, invented a safety razor with disposable blades. Gillette realized that a profit could be made by selling an inexpensive razor with disposable blades. This has been called the Razor and blades business model, or a "loss leader", and has become a very common practice for a wide variety of products.

There are also safety razors that are made of inexpensive materials that are meant to be wholly disposable. One such device was patented in the late 1950s by American entertainer and inventor Paul Winchell.

Electric razors

Rotary razor: The electric razor (also known as the electric dry shaver) has a rotating or oscillating blade. The electric razor usually does not require the use of shaving cream, soap, or water. The razor may be powered by a small DC motor, which is either powered by batteries or mains electricity. Many modern ones are powered using rechargeable batteries. Alternatively, an electro-mechanical oscillator driven by an AC-energized solenoid may be used. Some very early mechanical shavers had no electric motor and had to be powered by hand, for example by pulling a cord to drive a flywheel.

The first electric razor was patented in 1928 by the American manufacturer Col. Jacob Schick. The Remington Rand Corporation developed the electric razor further, first producing the Remington brand of razor in 1937. Another important inventor was Prof. Alexandre Horowitz, from Philips Laboratories in the Netherlands, who invented the very successful concept of the revolving (rotary) electric razor. It has a shaving head consisting of cutters that cut off the hair entering the head of the razor at skin level. The major manufacturers introduce new improvements to the hair cutting mechanism of their products each few years. Each manufacturer sells several different generations of cutting mechanism at the same time, and for each generation, several models with different features and accessories to reach various price points. The improvements to the cutting mechanisms tend to 'trickle-down' to lower priced models over time.

Early versions of electric razors were meant to be used on dry skin only. Many recent electric razors have been designed to allow for wet/dry use, which also allows them to be cleaned using running water or an included cleaning machine, reducing cleaning effort. Some patience is necessary when starting to use a razor of this type, as the skin usually takes some time to adjust to the way that the electric razor lifts and cuts the hairs. Moisturizers designed specifically for electric shaving are available.

Radio active Carbon 14 dating of objects

Radiocarbon dating (sometimes simply known as carbon dating) is a radiometric dating method that uses the naturally occurring radioisotope carbon-14 (14C) to estimate the age of carbonaceous materials up to about 58,000 to 62,000 years. Raw, i.e. uncalibrated, radiocarbon ages are usually reported in radiocarbon years "Before Present" (BP), "Present" being defined as 1950. Such raw ages can be calibrated to give calendar dates. One of the most frequent uses of radiocarbon dating is to estimate the age of organic remains from archaeological sites. When plants fix atmospheric carbon dioxide (CO2) into organic material during photosynthesis they incorporate a quantity of 14C that approximately matches the level of this isotope in the atmosphere (a small difference occurs because of isotope fractionation, but this is corrected after laboratory analysis). After plants die or they are consumed by other organisms (for example, by humans or other animals) the 14C fraction of this organic material declines at a fixed exponential rate due to the radioactive decay of 14C. Comparing the remaining 14C fraction of a sample to that expected from atmospheric 14C allows the age of the sample to be estimated.

The technique of radiocarbon dating was developed by Willard Libby and his colleagues at the University of Chicago in 1949. Emilio Segrè asserted in his autobiography that Enrico Fermi suggested the concept to Libby in a seminar at Chicago that year. Libby estimated that the steady state radioactivity concentration of exchangeable carbon-14 would be about 14 disintegrations per minute (dpm) per gram. In 1960, he was awarded the Nobel Prize in chemistry for this work. He first demonstrated the accuracy of radiocarbon dating by accurately estimating the age of wood from an ancient Egyptian royal barge for which the age was known from historical documents.



PSLV-C16 puts 3 satellites in orbit.20 Apr. 2011

It was the PSLV's 17th consecutive successful mission out of the 18 launches from Sriharikota. At the end of 18 minutes of “a delightful” flawless flight, the fourth stage of the rocket shot India's Resourcesat-2 into its orbit. About 40 seconds later, the fourth stage bulleted again the Youthsat and the X-sat into their orbits. The accuracy was such that the Resourcesat-2 reached an orbit at an altitude of 822.9 km against the targeted 822 km.

 The 54-hour countdown progressed without any hitch. At 10.12 a.m., the PSLV-C16 roared off from the first launch pad, climbing steadily. The rocket rode on towers of flame, tracing a parabolic path across a clear sky. One could see with naked eyes the separation of the first stage. The four stages and the strap-on booster motors ignited on time and fell into the Bay of Bengal. The rocket also performed “a dog-leg manoeuvre,” skirting the Sri Lankan territory.

What is Good Friday?"

Question: "What is Good Friday?"




Answer: Good Friday is the Friday immediately preceding Easter Sunday. It is celebrated traditionally as the day on which Jesus was crucified. If you are interested in a study of the issue, please see our article that discusses the various views on which day Jesus was crucified. Assuming that Jesus was crucified and died on a Friday, should Christians remember Jesus' death by celebrating Good Friday?



The Bible does not instruct Christians to remember Christ’s death by honoring a certain day. The Bible does give us freedom in these matters, however. Romans 14:5 tells us, “One man considers one day more sacred than another; another man considers every day alike. Each one should be fully convinced in his own mind.” Rather than remembering Christ's death on a certain day, once a year, the Bible instructs us to remember Christ’s death by observing the Lord’s Supper. First Corinthians 11:24-26 declares, “...do this in remembrance of me...for whenever you eat this bread and drink this cup, you proclaim the Lord's death until he comes.”



Why is Good Friday referred to as “good”? What the Jewish authorities and Romans did to Jesus was definitely not good (see Matthew chapters 26-27). However, the results of Christ’s death are very good! Romans 5:8, “But God demonstrates his own love for us in this: While we were still sinners, Christ died for us.” First Peter 3:18 tells us, “For Christ died for sins once for all, the righteous for the unrighteous, to bring you to God. He was put to death in the body but made alive by the Spirit.”



Many Christian churches celebrate Good Friday with a subdued service, usually in the evening, in which Christ’s death is remembered with solemn hymns, prayers of thanksgiving, a message centered on Christ suffering for our sakes, and observance of the Lord's Supper. Whether or not Christians choose to “celebrate” Good Friday, the events of that day should be ever on our minds because the death of Christ on the cross is the paramount event of the Christian faith.



Though Jesus was innocent, Pilate could not do justice and afraid of his position and handed over Jesus to be crucified as it is written in the books of Isaiah.. So dying on the cross He showed us the way, how to live our life even in misery. When Jesus died, there were dark clouds, earth shook, many good people who died came out of their tombs and appeared to many. Death on the cross is meant defeat of satan. So it is called "Good Friday".

Easter ..It,s significance

On Good Friday, a cross, symbolic of the one on which Jesus was crucified, is unveiled in many churches. It is believed that Jesus rose from his grave on the following Sunday, which is celebrated as Easter. The rituals for Good Friday begin on the preceding Thursday. A feast symbolising the last supper of Christ is held on Thursday night. The end of this meal marks the beginning of the fast for Easter.

quis·ling   /ˈkwɪzlɪŋ/

[kwiz-ling]

–noun

a person who betrays his or her own country by aiding an invading enemy, often serving later in a puppet government; fifth columnist.

Use Quisling in a Sentence

See images of Quisling

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Origin:

1940; after Vidkun Quisling (1887–1945), pro-Nazi Norwegian leader who sold his country to Hitler.

Quisling and Adolph Hitler

Biography of Quisling.

Vidkun Quisling, (born July 18, 1887, Fyresdal, Nor.—died Oct. 24, 1945, Akershus Fortress, Oslo), Norwegian army officer whose collaboration with the Germans in their occupation of Norway during World War II established his name as a synonym for “traitor.”

 

Quisling entered the army in 1911 and served as military attaché in Petrograd (St. Petersburg; 1918–19) and in Helsinki (1919–21). He assisted in relief work in Russia under the famous Arctic explorer and humanitarian Fridtjof Nansen and later for the League of Nations. In the absence of diplomatic relations between Britain and Soviet Russia, he represented British interests at the Norwegian legation in Moscow (1927–29). As minister of defense in an agrarian government (1931–33), he gained notoriety for repressing a strike by hydroelectrical workers. He resigned from the government in 1933 to form the fascist Nasjonal Samling (National Union) Party, which stood for suppression of Communism and unionism, but he never gained a seat in the Storting (parliament).

At a meeting with Adolf Hitler in December 1939, Quisling urged a German occupation of Norway; after the German invasion of April 1940, he proclaimed himself head of the government. Although his regime came under widespread bitter attack and collapsed within a week, he continued to serve in the occupation government and was named “minister president” in February 1942 under Reich commissioner Josef Terboven.

Quisling’s attempts to convert the church, schools, and youth to National Socialism aroused fervent Norwegian opposition. He was held responsible for sending nearly 1,000 Jews to die in concentration camps. After the liberation of Norway in May 1945, he was arrested, found guilty of treason and other crimes, and executed.

General Knowledge.

The top five soccer coutries in the world(as of today)
1. Brazil
2. Germany
3. Italy
4. Argentina
5. England
Top 5 Smallest Countries of the World.
1. Vatican City: 0.2 square miles. Vatican City is surrounded by Rome, Italy. Approximate population 1000
2. Monaco: 0.7 square miles. Monaco lies along the French Riviera on the French Mediterranean coast near Nice. Approximate population 34,000
3. Nauru: 8.5 square miles. Oval-shaped island, part of Micronesia. Approximate population 15,000
4. Tuvalu: 9 square miles. Northeast of Australia. Tuvalu is composed of 9 coral atolls along a 360 mile chain in Polynesia. Approximate population 12,000
5. San Marino: 24 square miles. Located on Mt. Titano in north central Italy. Approximate population 29,000
Top 5 First Human Beings on the Moon
1. Neil Armstrong
2. Edwin “Buzz” Aldrin
3. Charles Conrad Jr
4. Alan Bean
5. Alan Shepard

The umbrella has come into general use, and in consequence numerous improvements have been effected in it. In China people learned how to waterproof their umbrellas by waxing and lacquering their paper Parasols. The transition to the present portable form is due, partly to the substitution of silk and gingham for the heavy and troublesome oiled silk, which admitted of the ribs and frames being made much lighter, and also to many ingenious mechanical improvements in the framework. Victorian era umbrellas had frames of wood or baleen, but these devices were expensive and hard to fold when wet. Samuel Fox invented the steel-ribbed umbrella in 1852; however, the Encyclopédie Méthodique mentions metal ribs at the end of the eighteenth century. Modern designs usually employ a telescoping steel trunk; new materials such as cotton, plastic film and nylon often replace the original silk.

The word umbrella comes from the Latin word umbra, meaning shade or shadow (the Latin word, in turn, derives from the Ancient Greek ómbros [όμβρος].) Brolly is a slang word for umbrella, used often in Britain, New Zealand, Australia, and South Africa; Bumbershoot is a fanciful Americanism from the late 19th century.

The word umbrella comes from the Latin word umbra, meaning shade or shadow (the Latin word, in turn, derives from the Ancient Greek ómbros [όμβρος].) Brolly is a slang word for umbrella, used often in Britain, New Zealand, Australia, and South Africa; Bumbershoot is a fanciful Americanism from the late 19th century.

The word umbrella comes from the Latin word umbra, meaning shade or shadow (the Latin word, in turn, derives from the Ancient Greek ómbros [όμβρος].) Brolly is a slang word for umbrella, used often in Britain, New Zealand, Australia, and South Africa; Bumbershoot is a fanciful Americanism from the late 19th century.

Straight shaft umbrella

Twin Umbrellas

How the septic tank works

How septic tank works.

A septic tank is a tank and maybe made of steel, fiberglass and concrete where sanitary waste coming from the toilet are being stored. Residential houses use tank made of reinforced concrete.

Another term for a septic tank is septic vault. Houses in the urban area make use of the installed sanitary sewer lines that can be found along the main and secondary roads.

Water coming from the use of toilet lavatory and kitchen sink is not allowed to go to the septic tank. They go directly to open or closed canal and after discharge in the storm drainage.


Septic tank is meant just for the storage of sanitary waste. The standard and common septic tank has three (3) compartments namely main tank, digestive chamber and the leaching chamber. You can find this type of septic tank in most residential houses. To give you a clear picture of how ordinary septic tank looks please see the second page of this blog. This sketch was done using MS Excel program.

The septic tank works like this. Sanitary waste coming from the use of water closet goes to the main tank including the water that goes with it. Solids remain in the main tank. When the main tank is already full and the water reaches the level of outlet pipe excess water will go to the digestive chamber. This water contains small particles that will be left behind at the digestive chamber. From the digestive chamber the water will go the leaching chamber where water are further filtered while passing to a pile of small diameter gravel. Finally the clean water goes out of the septic tank and directly goes to the road gutter down to the storm drainage.

The main tank has one inlet pipe and one outlet pipe. The outlet pipe goes to the digestive chamber. There is one outlet in the digestive chamber and this goes to the leaching chamber. Leaching chamber has one outlet pipe that goes to the road gutter.

This is more or less how the ordinary septic tank works. Hope you find my blog on this subject worth reading. And hoping that I have clearly answered your query about how it works.

The Theory of Evolution...Simplified and with diagrams and photos

I have called this principle, by which each slight variation, if useful, is preserved, by the term Natural Selection. (Charles Darwin)

Ignorance more frequently begets confidence than does knowledge: it is those who know little, not those who know much, who so positively assert that this or that problem will never be solved by science. (Charles Darwin, Introduction to The Descent of Man, 1871).

Brief Summary

Darwin's theory of evolution is based on five key observations and inferences drawn from them. These observations and inferences have been summarized by the great biologist Ernst Mayr as follows:

1) Species have great fertility. They make more offspring than can grow to adulthood.

2) Populations remain roughly the same size, with modest fluctuations.

3) Food resources are limited, but are relatively constant most of the time.

From these three observations it may be inferred that in such an environment there will be a struggle for survival among individuals.

4) In sexually reproducing species, generally no two individuals are identical. Variation is rampant.

5) Much of this variation is heritable.

From this it may be inferred: In a world of stable populations where each individual must struggle to survive, those with the "best" characteristics will be more likely to survive, and those desirable traits will be passed to their offspring. These advantageous characteristics are inherited by following generations, becoming dominant among the population through time. This is natural selection. It may be further inferred that natural selection, if carried far enough, makes changes in a population, eventually leading to new species. These observations have been amply demonstrated in biology, and even fossils demonstrate the veracity of these observations.

To summarise Darwin's Theory of Evolution;

1. Variation: There is Variation in Every Population.

2. Competition: Organisms Compete for limited resources.

3. Offspring: Organisms produce more Offspring than can survive.

4. Genetics: Organisms pass Genetic traits on to their offspring.

5. Natural Selection: Those organisms with the Most Beneficial Traits

are more likely to Survive and Reproduce.

Darwin imagined it might be possible that all life is descended from an original species from ancient times. DNA evidence supports this idea.

Probably all organic beings which have ever lived on this earth have descended from some one primordial life form. There is grandeur in this view of life that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being evolved. (Charles Darwin, The Origin of Species)

Charles Darwin