Principal-quantum-number
noun, Physics.
1.
the nonnegative, integral quantum number that defines the stationary orbits in the Bohr model of the atom.
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- Principal type
The most general type of an expression. For example, the following are all valid types for the lambda abstraction (\ x . x): Int -> Int Bool -> Bool (a->b) -> (a->b) but any valid type will be an instance of the principal type: a -> a. An instance is derived by substituting the same […]