The Hole – video powered by Metacafe

I find this demo to be pretty interesting for two reasons. One he applied his knowledge of basic circuitry and using that to create and innovated idea. I’m impressed that he could change the function of a normal flashlight to have an additional function. Also, I think that by having self charge devices we also save on energy consumption. This also helps in scenarios such as getting lost and one’s phone battery is dead, the person will be able to charge it from a portable external source of power. I think there should be more innovation in external portable energy sources that will prove useful in emergency situations.