3/4 and Kleiber's Law - Numberphile

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Uploaded by on Jan 31, 2012

The fraction three quarters has a particular interest to biologists because of its link to the research of Max Kleiber and metabolic rates in animals.

This video features Thomas Woolley from the University of Oxford.

Tom thanks @gameboygenius for pointing out the following: Small mistake. I think where you said they expected MR ∝ r^(2/3) you actually meant to say MR ∝ m^(2/3). If you take the r/V/A relations and solve for A, you get A ∝ V^(2/3). Mass is proportional to volume, so roughly  A ∝ m^(2/3). If we then assume MR is proportional to area, the final assumption would be MR ∝ m^(2/3)."

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Top Comments

  • Some humans are spherical... I've seen them at Wal-Mart!

  • that mouse looks like balls haha

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  • mouse looks like tits...whale looks like sperm. Just sayin'.

  • Wait till you see MY elephant. 

  • nice mouse....*cough cough* *dick* *hack cough*

  • Am I the only one who thought that blue whale was going to be a dinosaur?

  • Your mouse drawing looks like sperm morphing into a nutsack with ears.

  • he looks like a mouse.

  • @w00gedyb00gedy high fin, bro!

  • That's either a very heavy mouse or a very light elephant...

  • Next you will be talking about spherical chickens in a vacuum

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