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abstraction > mathematical concept > number > constant > fundamental physical constant > physico chemical constant > first radiation constant

first radiation constant comparison table

Subject	has equation	is an instance of	has uncertainty	is a kind of	has symbol	has value
physico chemical constant				fundamental physical constant		changes in value are due solely to an increase in measurement accuracy or convention
first radiation constant		physico chemical constant	0.00000029 × 10-16 W m2		c1	3.74177107 × 10-16 W m2

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