The instrument used in the measurement of atmospheric pressure is?

Assessment: WAEC SSCE - Physics - 1994 (Objective) Subject: Physics

Question 1 Report

The instrument used in the measurement of atmospheric pressure is?
Answer Details
The instrument used in the measurement of atmospheric pressure is a barometer. A barometer is an instrument used to measure atmospheric pressure. It consists of a glass tube filled with mercury and inverted into a dish of mercury. Atmospheric pressure exerts a force on the surface of the mercury in the dish, causing it to rise up the tube. The height of the mercury column is directly proportional to the atmospheric pressure. The barometer is calibrated in units of pressure, such as millimeters of mercury (mmHg) or kilopascals (kPa).
Read lesson note on Pressure (JAMB)
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