There are things you can learn in a kitchen that can shed light on some of the most fundamental characteristics of the Universe.

Take a look inside your toaster.

Toaster elements glow orange, always. Noone has a toaster that glows blue. The colour can’t be changed – it’s set by a very specific law of physics that applies to everything in the Universe.

Video by Dan John/Script by Helen Czerski/Animation by Adam Proctor


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