It’s official! Bananas make antimatter

“Potassium-40 is a naturally occurring isotope that is unstable and decays, but it has a huge half life, about a billion years. These days only a small fraction (100 parts per million) of potassium atoms are actually Potassium-40, but objects that are dense in potassium—such as bananas—are likely to have tens of microrams of the stuff. If one crunches the numbers (as they do in the original article), it turns out that bananas pop out a positron every 75 minutes or so.”

Every. 75. Minutes. Rest easy tonight, people.

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