My thermostat uses the expansion/contraction of a drop mercury to conduct electricity and trigger when to turn off and on. Submitted by Iain_MS t3_z84a06 on November 29, 2022 at 7:58 PM in mildlyinteresting 91 comments 197
Significant-Funny-14 t1_iybltvo wrote on November 30, 2022 at 4:30 AM Reply to comment by ksquires1988 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 That is correct. I believe one piece of metal expands more with heat than the other, causing a flex rather than just extending very slightly Permalink Parent 6
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