https://tube.loping.net/videos/watch/6ed9fbf9-c497-4eda-b09b-351d1a54482f This is a usage counter that works by moving mercury in a capillary tube via electrochemistry. As electricity flows through the device, mercury atoms are transferred across an electrolyte gap in the capillary. The position of the gap changes as mercury is transferred, and shows how much total charge has been passed through the device. I realize that the divider network looks more like 20:1. This might kill my theory that the mercury ions are in the 2+ state. I'm really not sure. Mon, 13 Jul 2026 19:33:43 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://tube.loping.net https://tube.loping.net/lazy-static/avatars/8a56e488-2120-4649-a417-badf5893657b.png https://tube.loping.net/videos/watch/6ed9fbf9-c497-4eda-b09b-351d1a54482f All rights reserved, unless otherwise specified in the terms specified at https://tube.loping.net/about and potential licenses granted by each content's rightholder.