My thermostat uses the expansion/contraction of a drop mercury to conduct electricity and trigger when to turn off and on.JSONJSONJSON t1_iybftwk wrote
Reply to comment by SFXBTPD in My thermostat uses the expansion/contraction of a drop mercury to conduct electricity and trigger when to turn off and on. by Iain_MS
Oh! Is that because of decreased rate of change at higher temps? So the scale we read is consistent.
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