This is a time-lapse of a gravity wave taken by the Tama, Iowa KCCI-TV webcam on 6 May 2007. Gravity waves form when buoyancy pushes air up, and gravity pulls it back down. Very cool stuff!posted by silvercord 1 decade 5 years 2 weeks ago • 39,981 views • 33 secs
Updated: 1 decade 4 years 4 months 3 weeks ago
These are the 100 videos that were submitted and received the most votes during the year of 2007.