For two identical mercury thermometers A & B except for a bigger bulb for A,...

  • Thread starter Thread starter extremelyfrustrated
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extremelyfrustrated

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...why does B cover a bigger range? According to my source (which was kind of dubious), since the volume of mercury in bulb A is larger, it will expand more. Hence a small increase in temperature will result in a larger expansion, hence B would be able to cover a larger range of temperature.

However, I cannot understand the link between volume of mercury in bulb A being larger and the fact that this mercury will expand more.
 
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