Swallowing is a complex act that involves the coordinated activity of the mouth, pharynx, larynx and esophagus (Figure 1). A swallow has four phases: oral preparatory, oral propulsive, pharyngeal and esophageal.3.
Sir Isaac Newton is the founder of the classical mechanics. His three laws of motion, gravitational laws, etc. are the most fundamental & basic laws of nature.
Considered one of the greatest scientific minds of all time, mathematician and physicist Isaac Newton formulated theories about motion, gravity and calculus, among a range of other topics. The son of an illiterate farmer, Newton also was a temperamental loner and often secretive about his work. Find out more about this fascinating Englishman, from his long-term interest in alchemy to the job he held that involved sending people to the gallows to the cause of one of his most bitter rivalries.