Woah Dude

What do you get when you cross a spinning coin and the Energizer Bunny? You get something called the Euler’s Disc. Named after Leonhard Euler (pronounced “oiler“, not “yoo-ler“), it is a perfect demonstration of kinetic energy in action and a great source of amusement. Back in 2015, I got myself an Euler’s Disc after seeing it on Grand Illusions (which you can also buy from Vat19) and decided to make a video of this cool spinning disk toy doing its thing, and I was able to get it spinning for two minutes. You may have also seen this on The Big Bang Theory. This video was actually made on May 29, 2015. On average, you’re lucky to get it going for more than a minute and forty seconds. For those who don’t know, an Euler’s (pronounced like “oilers“) disk is a large piece of metal shaped like a coin that uses the relative lack of friction on the mirror to spin like a coin on its side but for a very long time. While the force of gravity pushes downwards, the mirror pushes upwards and the spinning disk continues to