OtoscopesInstruments designed to inspect or auscultate the ear. They are designed primarily to examine the outer ear canal and tympanic membrane by means of light and air under moderate pressure, as with a pneumatic otoscope. (UMDNS, 1999)
EarNo Entry for Ear
LightThat portion of the electromagnetic spectrum to which the human eye is sensitive. Light is about 400 to 800 nanometers in wavelength, i.e., between the ultraviolet and infrared spectra.
AirThe mixture of gases present in the earth's atmosphere consisting of oxygen, nitrogen, carbon dioxide, and small amounts of other gases.
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