1 Common rashes include eczema, poison ivy, hives, and athlete's foot. 2  Infections that cause rashes may be fungal, bacterial, parasitic, or viral.  Over-the-counter products may be helpful treatments for many skin rashes.
The conditions under which this process occurs happen in two ways. According to the Cornell Center for... Atoms emit a photon when an electron falls from a high-energy state to a low-energy state. The conditions under which this process occurs happen in two ways. According to the Cornell Center for...
It has no mass but travels at the speed of light and behaves like a particle. Electrons in an excited state jump to higher energy orbits for a very short period of time. When the excited electrons lose energy to return to ground state, they generally release the energy as photons. The wavelength of the photon emitted depends on the energy that is lost, and sometimes, the wavelength of the photon falls under the visible light portion of the electromagnetic spectrum.