Physicist Richard Feynman explains how a train stays on the tracks... From BBC TV 'Fun to Imagine' (1983) -YT
posted by cybrbeast 1 decade 4 years 11 months 1 week ago • 17,336 views • 2:27Top Videos of 2009
Created: 1 decade 4 years 5 months ago
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Updated: 1 decade 4 years 5 months ago
Views: 11,733
These are the 100 videos that were submitted and received the most votes during the year of 2009.