the bulb of a thermometer has thin wall but the stem has a thick wall
Answers
The bulb has a thin wall so that the heat can reach it soon. The stem has a thick wall because it has mercury inside it so when the the temperature rises the mercury bounces inside the thermometer.
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Answer:
The wall of the bulb is thin, allowing the heat to quickly reach it. Because the stem has a strong wall and contains mercury, the mercury bounces inside the thermometer when the temperature rises.
Explanation:
Because glass is a poor conductor of heat, a laboratory thermometer's bulb's wall must be thin in order for it to respond fast to temperature changes and provide accurate readings.
The heat raises the temperature of the glass in the area where it is being directed. The piece of the stem below the heated zone pulls out the heated zone under the effect of gravity, transforming the glass into what appears to be a very thin strand of taffy.
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