Video encyclopedia

Banana equivalent dose


Banana Equivalent Dose Song from You Can't Polish A Nerd - out now!


Radioactive Bananas in Chernobyl


Banana equivalent radiation dose BERD


Comparison: Most Radioactive Things


The Banana Song: What's the equivalent of...?

Banana equivalent dose (BED) is an informal measurement of ionizing radiation exposure, intended as a general educational example to compare a dose of radioactivity to the dose one is exposed to by eating one average-sized banana. Bananas contain naturally occurring radioactive isotopes, particularly potassium-40 (40K), one of several naturally-occurring isotopes of potassium. One BED is often correlated to 10-7 Sievert (0.1 µSv); however, in practice, this dose is not cumulative, as the principal radioactive component is excreted to maintain metabolic equilibrium. The BED is only meant to inform the public about the existence of very low levels of natural radioactivity within a natural food and is not a formally adopted dose measurement.
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    • History 

    • Usage 

    • Dose calculation 

    • Radiation from other household consumables