4500 vibration passes through a tuning fork in 5 mins. (i) Find the frequency, (ii) Time period of the vibrations.
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comprehensive survey of the anatomy of the eustachian tube seems timely in view of its importance in relation to some of the problems of aviation and submarine medicine.
Bartholomaeus Eustachius (1520-1574) is accredited with its first description.1 However, according to Singer,2 Alcmaeon (about 500 B. C.) "discovered the tubes, called in after years by the name of Eustachius." This author also points out
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