Beard-second
From Wikipedia, the free encyclopedia
| International units | |
|---|---|
| 5×10−9 m | 5×10−12 km |
| 5×10−6 mm | 50 Å |
| 33.423×10−21 AU | 0 ly |
| US customary / Imperial units | |
| 196.85×10−9 in | 16.404×10−9 ft |
| 5.468×10−9 yd | 3.107×10−12 mi |
A beard-second is a unit of length created as teaching exercise inspired by the light year, but for nuclear physics instead of astronomy.[citation needed] The beard-second is defined as the length an average beard grows in a second, or about 5 nanometers.
Beard-second isn't as popular as Ångström (10-10 m). In physics it is also common to use the SI units, usually with the nano prefix; 1 nm = 10-9 m.
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