Scroll down to related links and look at "Brightness - Wikipedia" and "Light intensity - Wikipedia".
The brightness of light is measured with a photometer.
lightometer or sekonic
Balance, usually a triple-beam balance or a digital balance
newton
weight
The noun 'light' is an abstract noun as a word for knowing or understanding.The noun 'light' is a concrete noun as a word for natural or artificial brightness which allows us to see things; a device used to produce brightness; a word for a physical thing.
g/cm3 and g/mL
Balance, usually a triple-beam balance or a digital balance
A manometer instrument is used to check the alignment of two shafts.
Photometer
Lumosity refers to the level or quality of brightness emitted by something, such as a light source or a reflective surface. It is often used to describe the intensity or brilliance of light.
A tape mesure is used for mesuring the length or something such as, doors, windows, cloths, ect.
I believe it is the Ambient light sensor to auto adjust screen brightness.
Hygrometers.
An item called a LUX meter is usually used for the determination of the brightness of a light bulb. It is generally a meter that measures the amount of incident white light.
That is called a rheostat or a dimmer.
centimeters are used to mesure lenth, milliliters are used to mesure volume. That is like asking how many yards are in a gallon
weight
newton