FORCED CIRCULATION AND NATURAL CIRCULATION In forced circulation type of boilers, the circulation of water is done by a forced pump. … The boilers which produce steam at pressure below 80 bar are called low pressure boilers. Examples: Cochran, Cornish, Lancashire and Locomotive boiler etc. 8. What isRead More →
Hieronymus Fabricius 1537–1619 He discovered the valves in the veins. He noticed that the blood cannot move from the heart toward the periphery through the veins. William Harvey 1578–1657 Explained the complete process of circulation. Who explains blood circulation? Blood comes into the right atrium from the body, moves intoRead More →
Harvey’s theory of circulation was opposed by conservative physicians, but it was well established by the time of his death. It is likely that Harvey actually made his discovery of the circulation about 1618–19. When did the Chinese find out about blood circulation in the body? They had read aRead More →