Taking readings for temperature

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Homework Help Overview

The discussion revolves around the optimal conditions for taking temperature readings of a substance, specifically comparing the effectiveness of measurements during cooling versus warming phases.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants explore reasons for preferring cooling measurements, including potential influences of surrounding temperature and instrument behavior. Questions about the validity of these assumptions and the role of hysteresis are raised.

Discussion Status

The conversation is ongoing, with various perspectives being shared. Some participants suggest that the cooling phase may provide more accurate readings, while others are uncertain and express a lack of definitive answers. Hysteresis is mentioned as a possible factor, but no consensus has been reached.

Contextual Notes

Participants are considering the implications of measurement timing and the effects of environmental factors on readings, but specific details about the experimental setup or conditions are not provided.

exequor
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why is it better to take temperature readings for a substance when it is cooling down instead of when it is warming up?
 
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i was wondering could it be because when the substance is heating up the thermocouple would record the temperature of both the temperature of the substance whose temperature you want to find and the temperature of the surroundings but when it is cooling down only the temperature of the substance would be found.
 
What reason do you have to think that "while cooling down" is better than "while warming up"?
 
well the question that i was asked was why was it better to take it when cooling as opposed to when warming up.
 
Maybe it has something to do with some hysteresis of the instrument?
 
You could probably get away with posting this in the regular physics forums (i.e. classical mechanics). Incidently, I must appologize that I have no idea for an answer to your question. Hysteresis sounds tenable.
 
my guess:

if you're heating stuff up with a burner, then heating up goes faster than cooling down. So the thermometer gets more time to adjust.

total guess.
 

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