Slap on a Cap

Here's a nifty way to put on a latex swimming cap that'll get you in the mood for summer… and possibly even particle physics.

1. Sit on the edge of the pool and fill your swim cap with water. Hold it above your own head with two hands, or get someone else to do it for you. Note – it doesn't work with those less flexible fancy pants silicone swimming caps.
2. Get someone to drop the cap on the count of three. Here it is accelerating towards my cranium at 9.8 metres per second per second!
3. Bullseye… right on my noggin! All the water is still inside the cap at this stage and it looks a bit like 'flubber'.
4. Thanks to its incredible surface tension and low viscosity, the water flows around the side of my head and turns the cap inside out.
5. A split second later, water is bursting out in every direction in a spectacular explosion. Water really is impressive stuff.
6. Ta-da! You can't see a thing of course and you look ridiculous but who cares? It feels quite amazing and is completely hilarious.