Neat demonstration. I believe Faradays first motor was a magnet and wire suspended over a cup of mercury to act as a conductor. There is also a telescope that

Neat demonstration. I believe Faradays first motor was a magnet and wire suspended over a cup of mercury to act as a conductor. There is also a telescope that uses a spinning vat of mercury to form a reflector. Vintage mercury vapor rectifiers are really neat to watch. https://youtu.be/5ftCS5wwiPY https://youtu.be/5ftCS5wwiPY Had fun playing with mercury as a kid; say what you will. Still have my 1 pound container of it.