Bananas Emit Antimatter Almost Every 75 Minutes

April 23, 2013 at 11:09 pm 13 comments

By Chad Upton

Potassium-40 is a fairly unstable isotope, although the half life is nearly a billion years.

Because bananas have so much of this isotope, there is enough decay to generate one positron (approximately) every 75 minutes.

bananas

A positron is basically the opposite of an electron. It has the same mass as an electron, but a positive charge instead of a negative one. It is the electron’s antimatter doppelgänger.

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photo: keepon (cc)

sources: tertiarysource.net, wikipedia (positron, gamma ray)

Entry filed under: Food and Drink. Tags: , , , , , .

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