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. No-one 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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