Putting the size of an atom into perspective

Consider a cube of size 1 cm3. We could fit 108 atoms along each side. This would mean 1024 atoms squashed into the tube.

Compare that with the Pacific Ocean: 10,000 km x 10,000 km x 1 km = volume 108 km3 = 1023 cm3.

Thus there are 10 times as many atoms of hydrogen in a 1 cc box as there are cubic centimetres of water in the Pacific Ocean!

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