Question

what is frequency of emitted radiation and it's formula?

Answer 1

The wavelength (or equivalently,frequency) of the photon is determined by the difference in energy between the two states. These emitted photons form the element's spectrum. The fact that only certain colors appear in an element's atomic emission spectrum means that only certain frequencies of light are emitted.


The radiation emitted from an object can be expressed as the Energy emitted per unit time (Power) through an area of the object. The metric units for this expression are Watts per meter squared (W/m^2). The equation that relates emitted Watts per area to the temperature of the object is:

Emission = T^4 * Stefan- Boltzmann constant

T^4 = Temperature in Kelvins to the fourth power

Stefan- Boltzmann constant = 0.0000000567 Wm^-2K^-4

For example, the sun has a surface temperature of about 6,000 K. Find the emission from the sun

Emission = 6,000^4 K^4 * 0.0000000567 Wm^-2K^-4

Emission = 6,000 * 6,000 * 6,000 * 6,0000 K^4 * 0.0000000567 Wm^-2K^-4 = 73,483,200 Wm^-2