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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.
In relation to the base unit of [length] => (meters), 1 Earth Circumference (Ec) is equal to 40000000 meters, while 1 Bohr Radius (Bohr) = 5.29177E-11 meters.| 7147495094 Earth Circumference | to common length units |
|---|---|
| 7147495094 Ec | = 285899803760000000 meters (m) |
| 7147495094 Ec | = 285899803760000 kilometers (km) |
| 7147495094 Ec | = 2.8589980376E+19 centimeters (cm) |
| 7147495094 Ec | = 9.3799148215223E+17 feet (ft) |
| 7147495094 Ec | = 1.1255897785827E+19 inches (in) |
| 7147495094 Ec | = 3.1266382738408E+17 yards (yd) |
| 7147495094 Ec | = 1.7764990192277E+14 miles (mi) |
| 7147495094 Ec | = 30.218772197442 light years (ly) |
| 7147495094 Ec | = 1.0805663235737E+21 pixels (PX) |
| 7147495094 Ec | = 1.7868737735E+52 planck length (pl) |