How far is a second?

2012-04-07

[public] 2.89M views, 26.1K likes, 479 dislikes audio only

The moon may be 1.3 light-seconds away, but why on earth do we measure distances using time?

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Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!

Music by Nathaniel Schroeder

Thanks to Ross Diener for contributions and to Perimeter Institute for support. Created by Henry Reich