Binocular parallax, the apparent difference in position of an object as seen separately by one eye, and then by the other, the head remaining unmoved. Here is another way to understand what parallax is and what causes it. With one eye closed hold your thumb out in front of your open eye and put your thumb on top of a distant object. Now close the eye you are looking through and open the other eye while you hold your thumb steady on target.
Tea is nearly 5,000 years old and was discovered, as legend has it, in 2737 b.c. According to legend, the Shen Nong (or Shen Nung) , an early emperor was a skilled ruler, creative scientist and patron of the arts. He was called The Divine Healer. Numerous other medicinal plants were attributed to this legendary emperor.
Tea originated in the southwest of China, possibly as a medicinal drink. It became a popular drink throughout China during the Tang dynasty, and tea drinking spread to other East Asian countries.Portuguese priests and merchants introduced it to the West during the 16th century.ea is an aromatic beverage commonly prepared by pouring hot or boiling water over cured leaves of the Camellia sinensis, an evergreen shrub native to Asia.