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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.
The hand is a non-SI unit of measurement of length standardized to 4 inches (101.6 mm). It is used to measure the height of horses in some English-speaking countries, includi ..more definition+
In relation to the base unit of [length] => (meters), 1 Bohr Radius (Bohr) is equal to 5.29177E-11 meters, while 1 Hands (h) = 0.1016 meters.| 3900 Bohr Radius | to common length units |
|---|---|
| 3900 Bohr | = 2.0637903E-7 meters (m) |
| 3900 Bohr | = 2.0637903E-10 kilometers (km) |
| 3900 Bohr | = 2.0637903E-5 centimeters (cm) |
| 3900 Bohr | = 6.7709655511811E-7 feet (ft) |
| 3900 Bohr | = 8.1251586614173E-6 inches (in) |
| 3900 Bohr | = 2.2569885170604E-7 yards (yd) |
| 3900 Bohr | = 1.2823798392388E-10 miles (mi) |
| 3900 Bohr | = 2.1813659232639E-23 light years (ly) |
| 3900 Bohr | = 0.00078001532976571 pixels (PX) |
| 3900 Bohr | = 1.2898689375E+28 planck length (pl) |