> Kerr Effect Applied Science (which has many great videos) recently did that demonstration using an old magneto-optical removable disk. He was able to get a v

> Kerr Effect Applied Science (which has many great videos) recently did that demonstration using an old magneto-optical removable disk. He was able to get a very nice example of the effect that is visible with the naked eye. https://www.youtube.com/watch?v=UTquUbvzJII https://www.youtube.com/watch?v=UTquUbvzJII If you like that video, the previous video on the Faraday effect is really cool; I had no idea a solenoid rotates light polarization. https://www.youtube.com/watch?v=XhU-nNiAgtI https://www.youtube.com/watch?v=XhU-nNiAgtI