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The brightness scale that astronomers use has been around since ancient times. ... In it, the brightness difference of stars a single magnitude apart was roughly a ratio of 2.5.
The nitty-gritty. Nits are a measurement of brightness. When I measure a TV’s light output using a spectrophotometer and/or colorimeter (I personally use an X-Rite i1Publish Pro 2 and a Portrait ...
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