Scary Science Trick + Tutorial (Easy to do)

http://scienceray.com/technology/engineering/scary-science-trick/

Very cool trick + its easy to do.

 

This isn't much of a guide, but actually more so just a link to a tutorial. I think it would be much nicer if you actually wrote a guide of your own on the subject rather then just posting a link. I'm not saying you have to do anything, but it would be a lot more convenient and it would also look better on your part if you actually took the time to write out the guide for us members.

 

Thanks for the link anyways !