Explanation by: Kanak Sharma
Air Pressure can be defined as the pressure of air in the earth's atmosphere. It reaches a maximum of about 100,000 Pa near sea level and decreases as altitude increases. The barometer is an instrument which is used for measuring Air pressure. Physics instruments and their uses: Barkometer - - - Tanning liquors used in tanning leather Bolometer - - - Electromagnetic radiation Spectrometer - - - Properties of light.
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