Brightness - What is brightness?
Definition of BRIGHTNESS:
In labelling, brightness is a measure of the amount of light reflected by a material (usually paper); in particular, it refers to the perception of an object based on the amount of light reflected by that object that is visible to the human eye. Brightness is measured as the amount of blue light reflected by a material under standardised conditions.
Here is the Harvard-style citation to use if you would like to reference this definition of the word brightness:
Label Planet (2020) What is brightness? | Brightness Definition. Available at: https://www.labelplanet.co.uk/glossary/brightness/ (Accessed: January 1, 2023).