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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 barleycorn is a small English unit of length equal to 1/3 of an inch (i.e., close to 0.8467 cm) still used in Great Britain and Ireland as a determiner of shoe sizes.
In relation to the base unit of [length] => (meters), 1 Bohr Radius (Bohr) is equal to 5.29177E-11 meters, while 1 Barleycorns (bcorn) = 0.0084666666666667 meters.| 1 Bohr Radius | to common length units |
|---|---|
| 1 Bohr | = 5.29177E-11 meters (m) |
| 1 Bohr | = 5.29177E-14 kilometers (km) |
| 1 Bohr | = 5.29177E-9 centimeters (cm) |
| 1 Bohr | = 1.7361450131234E-10 feet (ft) |
| 1 Bohr | = 2.083374015748E-9 inches (in) |
| 1 Bohr | = 5.7871500437445E-11 yards (yd) |
| 1 Bohr | = 3.2881534339458E-14 miles (mi) |
| 1 Bohr | = 5.593245957087E-27 light years (ly) |
| 1 Bohr | = 2.0000393070916E-7 pixels (PX) |
| 1 Bohr | = 3.30735625E+24 planck length (pl) |
| Bohr Radius | to Barleycorns (table conversion) |
|---|---|
| 1 Bohr | = 6.2501220472441E-9 bcorn |
| 2 Bohr | = 1.2500244094488E-8 bcorn |
| 3 Bohr | = 1.8750366141732E-8 bcorn |
| 4 Bohr | = 2.5000488188976E-8 bcorn |
| 5 Bohr | = 3.125061023622E-8 bcorn |
| 6 Bohr | = 3.7500732283465E-8 bcorn |
| 7 Bohr | = 4.3750854330709E-8 bcorn |
| 8 Bohr | = 5.0000976377953E-8 bcorn |
| 9 Bohr | = 5.6251098425197E-8 bcorn |
| 10 Bohr | = 6.2501220472441E-8 bcorn |
| 20 Bohr | = 1.2500244094488E-7 bcorn |
| 30 Bohr | = 1.8750366141732E-7 bcorn |
| 40 Bohr | = 2.5000488188976E-7 bcorn |
| 50 Bohr | = 3.125061023622E-7 bcorn |
| 60 Bohr | = 3.7500732283465E-7 bcorn |
| 70 Bohr | = 4.3750854330709E-7 bcorn |
| 80 Bohr | = 5.0000976377953E-7 bcorn |
| 90 Bohr | = 5.6251098425197E-7 bcorn |
| 100 Bohr | = 6.2501220472441E-7 bcorn |
| 200 Bohr | = 1.2500244094488E-6 bcorn |
| 300 Bohr | = 1.8750366141732E-6 bcorn |
| 400 Bohr | = 2.5000488188976E-6 bcorn |
| 500 Bohr | = 3.125061023622E-6 bcorn |
| 600 Bohr | = 3.7500732283465E-6 bcorn |
| 700 Bohr | = 4.3750854330709E-6 bcorn |
| 800 Bohr | = 5.0000976377953E-6 bcorn |
| 900 Bohr | = 5.6251098425197E-6 bcorn |
| 1000 Bohr | = 6.2501220472441E-6 bcorn |
| 2000 Bohr | = 1.2500244094488E-5 bcorn |
| 4000 Bohr | = 2.5000488188976E-5 bcorn |
| 5000 Bohr | = 3.125061023622E-5 bcorn |
| 7500 Bohr | = 4.6875915354331E-5 bcorn |
| 10000 Bohr | = 6.2501220472441E-5 bcorn |
| 25000 Bohr | = 0.0001562530511811 bcorn |
| 50000 Bohr | = 0.0003125061023622 bcorn |
| 100000 Bohr | = 0.00062501220472441 bcorn |
| 1000000 Bohr | = 0.0062501220472441 bcorn |
| 1000000000 Bohr | = 6.2501220472441 bcorn |