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How can an aneroid barometer give reading in inches of mercury when it doesn't use any mercury?
Wiki User
∙ 14y ago
Good question.
Look at it like this if you had two barometers side by side, one a Mercury barometer and the other a barometer that reacted to changes in air pressure using some bellows and a spring.
Then, as the pressure changed you marked the second barometer positions and noted on the dial the inches reading from the mercury barometer, the second barometer measurement scale would mimic the real mercury barometer even though it did not actually use any mercury.
Wiki User
∙ 14y ago
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