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abstraction > mathematical concept > number > constant > fundamental physical constant > atomic constant > Bohr radius

Bohr radius (a0, a0)
subject			fact

Bohr radius	has symbol a0
	has symbol a0
	has value 0.5291772083 × 10-10 m
	has equation
	has uncertainty 0.0000000019 × 10-10 m
	is named after Niels Bohr
	has proposer Hartree
	has proposal date 1928
	has definition A unit of length based on the radius of the first Bohr orbit of hydrogen 1.
	is an instance of atomic constant
	is an instance of length unit
	is an instance of radius
length unit	is a unit of length
length	has unit length unit
fundamental physical constant	has accuracy
	has unit
unit	has historical origin
	represents

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