why a hydrometer has narrow stem and a heavy bulb ?
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A hydrometer is used for measuring the specific gravity of any given liquid.
Normally, a hydrometer is comprised of a narrow stem and a heavy bulb, to justify the principle of floatation.
The heavy bulb displaces certain amounts of liquid on placing the hydrometer in it.
As the heavy bulb sinks down the liquid, the displaced amount is instantly measured by the measuring marks on this short narrow stem.
Normally, a hydrometer is comprised of a narrow stem and a heavy bulb, to justify the principle of floatation.
The heavy bulb displaces certain amounts of liquid on placing the hydrometer in it.
As the heavy bulb sinks down the liquid, the displaced amount is instantly measured by the measuring marks on this short narrow stem.
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