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
dscottj t1_iyaxtu4 wrote on November 30, 2022 at 1:18 AM Reply to comment by Iain_MS 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 You and me both! Permalink Parent 2
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