General Science • PhysicsEasy
Which instrument is specifically designed to measure atmospheric pressure by balancing the weight of mercury in a glass tube against the atmospheric pressure?
A. Barometer✓ Correct Answer
B. Hydrometer
C. Anemometer
D. Altimeter
💡 Solution & Explanation
A barometer is the standard meteorological instrument invented by Evangelista Torricelli in 1643 to measure atmospheric pressure using a column of mercury. Instruments like hydrometers measure liquid density, anemometers measure wind speed, and altimeters determine altitude based on pressure changes. Standard atmospheric pressure at sea level is approximately 760 millimeters of mercury.
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