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A chain (ch) is a unit of length. It measures 66 feet, or 22 yards, or 100 links, or 4 rods (20.1168 m). There are 10 chains in a furlong, and 80 chains in one statute mile. ..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 Chains (ch) is equal to 20.1168 meters, while 1 Bohr Radius (Bohr) = 5.29177E-11 meters.| 49 Chains | to common length units |
|---|---|
| 49 ch | = 985.7232 meters (m) |
| 49 ch | = 0.9857232 kilometers (km) |
| 49 ch | = 98572.32 centimeters (cm) |
| 49 ch | = 3234 feet (ft) |
| 49 ch | = 38808 inches (in) |
| 49 ch | = 1078 yards (yd) |
| 49 ch | = 0.6125 miles (mi) |
| 49 ch | = 1.0418805623084E-13 light years (ly) |
| 49 ch | = 3725568.469363 pixels (PX) |
| 49 ch | = 6.16077E+37 planck length (pl) |