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
HubblePie t1_iy9pikp wrote on November 29, 2022 at 8:13 PM Reply to comment by Banea-Vaedr 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 Yes lol Permalink Parent 3
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