1 4/2 and 4/8 are also simple quadruple. 2  Notice that a time signature in simple meter will always have a 2, 3, or 4 for the top number. 3  While beats in simple meter are divided into two notes, beats in compound meter are divided into three. 4  To demonstrate this, we will examine 6/8 time.
The Discovery and Isolation of Caffeine. Caffeine has been used as a medicinal and recreational drug since before recorded history, by consumption of caffeine bearing plants. However, the discovery of the chemical did not occur until a young physician called Friedlieb Ferdinand Runge isolated and purified the white crystalline substance in 1819.
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.