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 3 years 3 weeks ago • 39,890 views • 33 secs
Updated: 1 decade 5 months ago
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