From a measurement of the wavelength (or its reciprocal, frequency) of light, we may determine the chemical element that created that emission, as well as the energy needed for it.
We may also determine whether the object is moving towards us or away. Examples would be the apparent recession of the expanding universe; and more homely, your speed as measured by the police radar machine.
If your question concerned the units in which the wavelength of light is usually measured, the nanometre (10-9m). We can see over about 1/2 an octave of frequencies - about 400nm to about 700nm. Beyond this at one end is infrared wavelengths, and at the short wavelength end we have the ultraviolet wavelengths.
No. A light-year is a measurement. A light year is a distance measurement based on how far light travels in a year.
When light passes through a prism, the angle of deviation of any light beam is inversely proportional to its wavelengh. Since, violet color has least wave length, it bends the most and the red bends the least.Dhirender Sharma
The length of a meter.
Yes, in the same way the 2011 Colts can be thought of as a great football team, i.e. incorrectly. Light years are a measurement of distance.
"light-year"
Goldfish
No. A light-year is a measurement. A light year is a distance measurement based on how far light travels in a year.
Basicly the wavelengh
The unit of measurement is the "light year".
When light passes through a prism, the angle of deviation of any light beam is inversely proportional to its wavelengh. Since, violet color has least wave length, it bends the most and the red bends the least.Dhirender Sharma
the wavelength will tell you the temperature chemically and change the colour physically
They don't. Light years are a distance measurement, not a time measurement.
what is northern light?
Years are a measurement of time; light years are a measurement of distance. A light year is the distance light travels in one year (in a vacuum).
The measurement of light is in lumins. Pronounced ( loo-mins)
Light Years
There is no "measurement of light". The units used depend on what you want to measure: its speed, frequency, wavelength, energy per photon, etc.