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...
With certain conditions you can excite any atom. You have to have a photon with an energy of the difference between the initial state of the electron and the final state. No more, no less energy. Same goes with heating up. You must supply a certain amount of heat for an electron to get excited. The excess heat will not be used. But sending an electron is easy. You just have to send an electron with an energy equal or greater than the energy gap. The excess amount of energy of the incoming electron will probably be sent out as an electron with that energy difference.