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A span is the distance measured by a human hand, from the tip of the thumb to the tip of the little finger. In ancient times, a span was considered to be half a cubit. Someti ..more definition+
The Bohr radius (a0 or rBohr) is a physical constant, approximately equal to the most probable distance between the proton and electron in a hydrogen atom in its ground state. It is named after Niels Bohr, due to its role in the Bohr model of an atom. Its value is 5.2917721067×10^−11 m.
In relation to the base unit of [length] => (meters), 1 Spans (span) is equal to 0.2286 meters, while 1 Bohr Radius (Bohr) = 5.29177E-11 meters.| 49 Spans | to common length units |
|---|---|
| 49 span | = 11.2014 meters (m) |
| 49 span | = 0.0112014 kilometers (km) |
| 49 span | = 1120.14 centimeters (cm) |
| 49 span | = 36.75 feet (ft) |
| 49 span | = 441 inches (in) |
| 49 span | = 12.25 yards (yd) |
| 49 span | = 0.0069602272727273 miles (mi) |
| 49 span | = 1.1839551844414E-15 light years (ly) |
| 49 span | = 42336.00533367 pixels (PX) |
| 49 span | = 7.000875E+35 planck length (pl) |