2. Light
https://www.youtube.com/watch?v=yXHWJ4iUlZs Slow motion is usually great for firing bullets through wine glasses or bursting giant balloons, but those boffins over at MIT have taken it one step further by capturing the fastest thing in the universe: Light. In our day to day live, light seems pretty much instant, you flick a switch and the light comes on, but light travels at a finite pace just like anything else (299 792 458 m/s to be precise). This, as you may have noticed, is pretty quick, so scientists at the MIT media lab created a camera capable of capturing a trillion frames per second in order to catch it in the act. The video, showing a pulse of laser light travelling through a bottle, was actually captured with 500 camera sensors, all set to take an image at one trillionth of a second intervals. At normal speeds, this would look just like a brief flash of light, but with the lightspeed camera, we can see the pulse make its way through the bottle and reflect off the other end.