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...
Electrons with more energy are able to overcome the attraction of the nucleus and inhabit a higher energy level. An electron can store the energy of a photon. Photons are bundles of light energy. When a photon with the right wavelength strikes a pigment, it excites an electron. The electron jumps to a higher energy level. Most of the time, the photoexcited electron only stays at the higher level for a fraction of a second and then drops back down to its ground state.