Question

Mention a few defects of a simple barometer.

   Mention a few defects of a simple barometer.

Physics (Class 10)

Physics (Class 10)

Trishna Knowledge… 2nd Edition

Chapter 5, Problem 33

Instant Answer

Solved by Expert Narayan Hari

06/25/2021

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A simple barometer is a device used to measure atmospheric pressure. It typically consists of a glass tube filled with mercury, inverted in a mercury reservoir. The height of the mercury column in the tube indicates the atmospheric pressure. Show more…

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Mention a few defects of a simple barometer.

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Key Concepts

Barometer

A barometer is an instrument used to measure atmospheric pressure, typically relying on a column of liquid (like mercury) or an aneroid cell. Its simplicity means that while it effectively demonstrates pressure changes, its basic design can lead to various shortcomings in precision and reliability.

Measurement Accuracy

Accuracy issues in simple barometers arise due to limitations in the design, such as coarse scale resolution and parallax errors when reading the level of the liquid column. These factors can result in imprecise and inconsistent pressure measurements.

Environmental Influences

Simple barometers are highly susceptible to external influences, with temperature fluctuations, humidity, and local environmental changes affecting the density and volume of the liquid. This sensitivity can distort readings and introduce systematic errors.

Calibration and Stability

Without advanced calibration mechanisms, simple barometers often experience drift in their baseline readings over time. This instability means that their performance may degrade, leading to further inaccuracies and reduced reliability in long-term atmospheric pressure monitoring.

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