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Automotive dictionary (encyklopedia)

Dictionary of terms and abbreviations for cars (automobiles), motorcycles (bikes),
bicycles, boats, engines, machines, machining and car fixing.

# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Bohr radius

According to the Bohr model of the hydrogen atom, the electron when in its lowest energy state move around the nucleus in a circular orbit of radius 
 4πε0h² a0 = ——————— = 5.292 x 10-11 m mee²
where h is Dirac's constant, m e is the mass of the electron, e is the electronic charge and e 0 the permittivity of free space. The Bohr radius is a fundamental distance in atomic phenomena.
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Top U.S. Insurance Companies

The top auto insurance companies in the U.S.A., based on several customer and expert ratings, are in the following list. Although individual ratings vary slightly, the order of the insurance companies below approximately reflects their average quality:

 
TOPlist