Today I Found Out
What Makes a Boomerang Come Back? (And Inventing the Frisbee) (2020x4)
Date de diffusion: Jan 06, 2020
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In this video:
Non-returning boomerangs have been used for at least 20,000-30,000 years, with the oldest known example carved from a mammoth’s tusk. These non-returning boomerangs were used for hunting and were carved for straight flight and to stay in the air as long as possible when thrown correctly.
Want the text version?: http://www.todayifoundout.com/index.php/2014/06/makes-boomerang-come-back/
Sources:
http://www.math.uci.edu/~eesser/papers/justboom.pdf
http://www.boomerangs.com/physics.html
http://www.popsci.com.au/science/what-makes-a-boomerang-come-back
http://entertainment.howstuffworks.com/boomerang4.htm
http://www.ccmr.cornell.edu/education/ask/?quid=841
http://boomerang.org.au/wp/articles/what-is-a-boomerang/
http://en.wikipedia.org/wiki/Boomerang
http://en.wikipedia.org/wiki/Precession
https://www.youtube.com/watch?v=ty9QSiVC2g0
http://iopscience.iop.org/0031-9120/38/6/001/pdf/pe3_6_001.pdf
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- Première: Oct 2013
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