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...
Thus, the photons absorbed or emitted by a sample of the atom in question are a direct probe of. the energy difference between quantum states of that atom. Again, the behavior of electrons within molecules can be probed in pretty much the same. manner. In the case of emissions from excited atoms, observing emitted photons of multiple wavelengths. implies many quantum states may be involved in producing the spectrum.