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Photon is a kind of energy that may be visible or invisible,at infrared range we can't see but at visible it seemed.Photon has no mass it has energy in the range of electromagnetic radiation.Temperature of an object determines the intensity of electromagnetic radiation.Photons at different frequencies travel like wave nature.When photon hit any matter/material it get absorbed by same matter and get accentuation hence photon energy slow down while penetrating the material(material denoted as temperature). Natural atmosphere observation and experimental methods like absorption spectroscopy used to identify the attenuation coefficient via absorption value. X-ray fluorescence (XRF) is one such method used to define the elemental composition at the same time one can know excited atomic ions followed by transition among K shell, L shell and M shell. These transition shows fluorescent spectrum through by one can note absorption coefficient.Accentuation concept here used to derive novel photon energy equation.
L. Vijay (Mon,) studied this question.