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
flannelmaster9 t1_iya4362 wrote on November 29, 2022 at 9:45 PM Think it's called a Mercury switch. Spring expands and contracts and the Mercury shifts completing the circuit. Haven't seen a mercury stat in the wild in a long time. And I've replaced hundreds of stats. Permalink 3
My thermostat uses the expansion/contraction of a drop mercury to conduct electricity and trigger when to turn off and on.
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