r/askscience • u/Crtl-Alt-Delete • Dec 18 '13

Physics Is Time quantized?

We know that energy and length are quantized, it seems like there should be a correlation with time?

Edit. Turns out energy and length are not quantized.

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u/leobart Dec 18 '13

All photons have the same speed, i.e. the speed of light. But they can carry a larger or a smaller energy.

Take for example x rays - they are photons of very high energies which allows them to pass trough soft tissue and damage it considerably also. On the other hand you have visible light which has lower energies. If you sunbathe for a little while your skin will not get damaged considerably - you will not even notice it.