3 ms·
Here is a fun and straightforward demo of the principle behind this: http://www.youtube.com/watch?v=k-trDF8Yldc http://www.youtube.com/watch?v=k-trDF8Yldc
by Cushman 16y ago
Here is a fun and straightforward demo of the principle behind this:
http://www.youtube.com/watch?v=k-trDF8Yldc http://www.youtube.com/watch?v=k-trDF8Yldc
- 3pt14159 16y agoGood find. I was scratching my head for a while over this.