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dasher
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I am currently working on a bimetallic thermometer using alumium and brass.
The coefficient of linear and volumetric thermal expansion of aluminium is 23 and 69 respectively. The coefficient of linear and volumetric thermal expansion of brass is 19 and 57 respectively.
I am using aluminium and brass sheets. The dimensions are 0.015 by 2 by 10 inches for brass and 0.016 by 2 by 10 inches for brass. I will be sticking them together to make the thermometer. And, does anyone know what can be used to cut the metal sheets? Because the the dumensions of the sheets I have are 0.015 by 4 by 10 inches and 0.016 by 4 by 10 inches respectively.
I am worried that the similar coefficients of thermal expansion will cause the changes to be very minor and the thermometer might fail or be inaccurate. Could someone advise me on whether the thermometer will work for a temperature range of 0.0 to 100.0 degrees C?
And, is the coefficient of linear of volumetric thermal expansion used in this case if I intend to calculate the expansion and the degree to which the thermometer will bend?
Lastly, if the bimetallic thermometer fails, what if I make a monometallic thermometer? I believe aluminium, with a greater coefficient of linear thermal expansion, will be a good choice, right? But why do most people make bimetallic instead of monometallic thermometers? Is it for aesthetic purposes?
I would appreciate any helpful response. Thanks alot! (:
The coefficient of linear and volumetric thermal expansion of aluminium is 23 and 69 respectively. The coefficient of linear and volumetric thermal expansion of brass is 19 and 57 respectively.
I am using aluminium and brass sheets. The dimensions are 0.015 by 2 by 10 inches for brass and 0.016 by 2 by 10 inches for brass. I will be sticking them together to make the thermometer. And, does anyone know what can be used to cut the metal sheets? Because the the dumensions of the sheets I have are 0.015 by 4 by 10 inches and 0.016 by 4 by 10 inches respectively.
I am worried that the similar coefficients of thermal expansion will cause the changes to be very minor and the thermometer might fail or be inaccurate. Could someone advise me on whether the thermometer will work for a temperature range of 0.0 to 100.0 degrees C?
And, is the coefficient of linear of volumetric thermal expansion used in this case if I intend to calculate the expansion and the degree to which the thermometer will bend?
Lastly, if the bimetallic thermometer fails, what if I make a monometallic thermometer? I believe aluminium, with a greater coefficient of linear thermal expansion, will be a good choice, right? But why do most people make bimetallic instead of monometallic thermometers? Is it for aesthetic purposes?
I would appreciate any helpful response. Thanks alot! (:
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