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A city block is between 1⁄20 and 1⁄8 mi (80 and 200 m). In Manhattan, the measurement "block" usually refers to a north–south block, which is 1⁄20 miles or 80 meters. 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 Blocks (bl) is equal to 80.4672 meters, while 1 Bohr Radius (Bohr) = 5.29177E-11 meters.| 400 Blocks | to common length units |
|---|---|
| 400 bl | = 32186.88 meters (m) |
| 400 bl | = 32.18688 kilometers (km) |
| 400 bl | = 3218688 centimeters (cm) |
| 400 bl | = 105600 feet (ft) |
| 400 bl | = 1267200 inches (in) |
| 400 bl | = 35200 yards (yd) |
| 400 bl | = 20 miles (mi) |
| 400 bl | = 3.4020589789663E-12 light years (ly) |
| 400 bl | = 121651215.32614 pixels (PX) |
| 400 bl | = 2.01168E+39 planck length (pl) |