1 E-21 m.html |
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To help compare different orders of magnitude this page lists lengths between 10−21 metres and 10−20 metres (1 zm and 10 zm).
- 1 × 10−20 metres = 1 zeptometre (zm) = 1,000 yoctometres
- 2 × 10−21 metres = radius of effective cross section for a 20 GeV neutrino scattering off a nucleon1
- 7 × 10−21 metres = radius of effective cross section for a 250 GeV neutrino scattering off a nucleon1
See also
| Orders of magnitude for length in E notation, shorter than one metre: | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| <-24 | -24 | -23 | -22 | -21 | -20 | -19 | -18 | -17 | -16 | -15 | -14 | -13 | -12 | -11 | -10 | -9 | -8 | -7 | -6 | -5 | -4 | -3 | -2 | -1 | 0 |
| longer than 1 metre: | |||||||||||||||||||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 |