In practical terms, parallax is the apparent change in spatial relationships between elements in a three-dimensional scene that occurs when we alter our viewing position. Move slightly, and stationary objects located at different distances in the scene seem to shift their positions relative to each other.
When was tea invented? Who discovered caffeine? Legend has it that the first cup of tea was brewed in 2737 B.C. when dried leaves landed in a boiling cup of water served to the Chinese Emperor Shen Nung. From China, the idea of tea spread throughout the world. It was introduced into the United States in 1650 by Peter Stuyvesant when he brought it the colonists inhabiting New Amsterdam (what is now New York). Iced tea was invented at the St. Louis World's Fair in 1904.
In the beginning, tea was used in ritual offerings. Then, tea leaves were eaten as a vegetable, or used in medicine. Until the Han Dynasty more than 2,000 years ago, tea was a new drink. During the Sui Dynasty (581-618), tea was used for its medicinal qualities.In the fourth and fifth centuries, rice, salt, spices, ginger and orange peel, among other ingredients, were added to tea.In the Tang Dynasty (618-907), tea drinking became an art form and a drink enjoyed by all social classes.hennong (Chinese: ç¥å), whose name means the Divine Farmer -- and who is considered as the ancient Chinese Father of Agriculture, is honored with the discovery of tea.