These amazing photographs taken by photographer Marc Simon Frei show the true power and beauty of electricity. These particular photos are the result of arcing various objects with a Tesla coil. As a bonus Frei has recently been experimenting with LED-illuminated clouds which you can see below.
For a source of energy that is so powerful yet remains invisible to us most of the time, it's fascinating to be able to view electricity in this way. You can see more of Frei's photos over on Google+.
Photos by Marc Simon Frei.