Chinese Chopsticks

Chinese Chopsticks

Chinese Chopsticks
(Zhu) (Kuaizi)
Related Resources • Yixing Teapot • Chinese Dumpling • Chinese Teahouse • Food & Recipes • Dictionary • Chinese Characters • Chinese Names • Dragon & Phoenix • Chinese Story • Articles by Topic Chopsticks play an important role in Chinese food culture. Chopsticks are called "Kuaizi" in Chinese and were called "Zhu" in ancient times (see the characters above). Chinese people have been using kuaizi as one of the main tableware for more than 3,000 years. It was recorded in Liji (The Book of Rites) that chopsticks were used in the Shang Dynasty (1600 BC - 1100 BC). It was mentioned in Shiji (the Chinese history book) by Sima Qian (about 145 BC) that Zhou, the last king of the Shang Dynasty (around 1100 BC), used ivory chopsticks. Experts believe the history of wood or bamboo chopsticks can be dated to about 1,000 years earlier than ivory chopsticks. Bronze chopsticks were invented in the Western Zhou Dynasty (1100 BC - 771 BC). Lacquer chopsticks from the Western Han (206 BC - 24 AD) were discovered in Mawangdui, China. Gold and silver chopsticks became popular in the Tang Dynasty (618 - 907). It was believed that silver chopsticks could detect poisons in food. Chopsticks can be classified into five groups based on the materials used to make them, i.e., wood, metal, bone, stone and compound chopsticks. Bamboo and wood chopsticks are the most popular ones used in Chinese homes. There are a few things to avoid when using chopsticks. Chinese people usually don't beat their bowls while eating, since the behavior used to be practiced by beggars. Also don't insert chopsticks in a bowl upright because it is a custom exclusively used in sacrifice. If you are really interested in chopsticks, you may want to visit the Kuaizi Museum in Shanghai. The museum collected over 1,000 pairs of chopsticks. The oldest one was from the Tang Dynasty.

The Nobel Prize in Physiology or Medicine 1999

The Nobel Prize in Physiology or Medicine 1999

The Nobel Prize in Physiology or Medicine 1999

Günter Blobel

The Nobel Prize in Physiology or Medicine 1999

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Günter Blobel

The Nobel Prize in Physiology or Medicine 1999 was awarded to Günter Blobel "for the discovery that proteins have intrinsic signals that govern their transport and localization in the cell".

RADAR and Doppler RADAR Invention and History

RADAR and Doppler RADAR Invention and History
Christian Andreas Doppler
Doppler RADAR is named after Christian Andreas Doppler. Doppler was an Austrian physicist who first described in 1842, how the observed frequency of light and sound waves was affected by the relative motion of the source and the detector. This phenomenon became known as the Doppler effect.

This is most often demonstrated by the change in the sound wave of a passing train. The sound of the train whistle will become "higher" in pitch as it approaches and "lower" in pitch as it moves away. This is explained as follows: the number of sound waves reaching the ear in a given amount of time (this is called the frequency) determines the tone, or pitch, perceived. The tone remains the same as long as you are not moving. As the train moves closer to you the number of sound waves reaching your ear in a given amount of time increases. Thus, the pitch increases. As the train moves away from you the opposite happens.