Infrastructure tools to support an effective radiation oncology learning health system

A toaster is a machine that toasts bread. The bread is put into the toaster and after a few minutes it pops up, toasted. This is because of the heating elements inside the toaster

The pop-up toaster was invented by Charles Strite in 1921.^[1]

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  A white plastic toaster
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  A toaster oven
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  A commercial conveyer style toaster

• Media related to Toasters at Wikimedia Commons
• How Toasters Work (Howstuffworks.com)