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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.
A rack unit (abbreviated U or RU) is a unit of measure defined as 1.75 inches (44.45 mm). It is most frequently used as a measurement of the overall height of 19-inch and ..more definition+
In relation to the base unit of [length] => (meters), 1 Bohr Radius (Bohr) is equal to 5.29177E-11 meters, while 1 Rack Unit (ru) = 0.04445 meters.| 121000 Bohr Radius | to common length units |
|---|---|
| 121000 Bohr | = 6.4030417E-6 meters (m) |
| 121000 Bohr | = 6.4030417E-9 kilometers (km) |
| 121000 Bohr | = 0.00064030417 centimeters (cm) |
| 121000 Bohr | = 2.1007354658793E-5 feet (ft) |
| 121000 Bohr | = 0.00025208825590551 inches (in) |
| 121000 Bohr | = 7.0024515529309E-6 yards (yd) |
| 121000 Bohr | = 3.9786656550744E-9 miles (mi) |
| 121000 Bohr | = 6.7678276080753E-22 light years (ly) |
| 121000 Bohr | = 0.024200475615808 pixels (PX) |
| 121000 Bohr | = 4.0019010625E+29 planck length (pl) |