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Atoms are small
Really really small
But how small?
Length of a mosquito
1 centimetre
Atoms wide: 100,000,000
Width of a human hair
100 micrometres
Atoms wide: 1,000,000
Diameter of HIV virus
100 nanometres
Atoms wide: 1000
Thickness of bacteria cell wall
10 nanometres
Atoms wide: 100
Width of the ...
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