Anything that is not the measure of intrinsic brightness of a celestial object.
A pencil has nothing to do with the brightness of a light bulb.
The brightness of a light bulb directly has no direct relationship with magnets and wire. The bulbs brightness is determined by the wattage of the bulb. The higher the wattage of the bulb the brighter the bulbs light output.
The apparent magnitude of a star is a measure of its brightness.
Photoreceptor
photometer or light meter
by using a photometer
brightness
brightness
With maths and light brightness.... Distance between two points...
The measure of a star's brightness is its magnitude. A star's brightness as it appears from Earth is called its Apparent Magnitude.Star's brightness is measured by there magnitude.
The measure of a star's brightness is its magnitude. A star's brightness as it appears from Earth is called its Apparent Magnitude.Star's brightness is measured by there magnitude.
Loudness is to brightness as sound is to light.
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.
A lux or lumens meter or in terms of mesurements lux or lumens
photographs use to measure the brightness of a star
no the correct answer is really time