Abbe number ( V-number)
Abbe number , is a measure of the material’s dispersion in relation to the refractive index, with high values of V indicating low dispersion (low
Balmer noticed that a single number had a relation to every line in the hydrogen spectrum that was in the visible light region. That number was 364.50682
he Stark–Einstein law is named after German-born physicists Johannes Stark and Albert Einstein, who independently formulated the law between 1908 and 1913.
Energy of a Photon
A photon is an elementary particle, the quantum of light and all other forms of electromagnetic radiation, and the force carrier for the electromagnetic
Weighted power mean
The weighted mean is similar to an arithmetic mean (the most common type of average), where instead of each of the data points contributing equally to the
Planck temperature, denoted by TP, is the unit of temperature in the system of natural units known as Planck units.
It serves as the