this post was submitted on 27 Aug 2023
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any idea what the mercury was for? something about getting the heat in and out of the strip faster maybe?
The Mercury is in a glass tube with two wires and the tube is attached to the bimetallic strip in such a way that the motion of the Mercury due to gravity as the strip moves will close the circuit between the two wires. The Mercury is just being used a liquid conductor.
Yeah, sorry. It was the switch! Two wires on one side. When the capsule tilts from the strip/coil it makes the electrical connection.
that is fascinating, thank you and @metheos@feddit.de for the elaboration. quite clever.