Skip to 09:15 where today's Eclipse is mentioned.
In this video, Tim demonstrates a variety of Lenz's Law demonstrations. At its simplest, you can just drop a magnet down a metal tube, maybe made of copper or aluminium, and be surprised at how slowly it descends, despite the fact that copper and aluminium are not attracted to magnets.
Vantablack is a material developed by Surrey NanoSystems in the United Kingdom and is one of the darkest substances known, absorbing up to 99.96% of visible light. The name is a compound of the acronym VANTA and the color black.
Bruce Yeany
