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...
Ionizing radiation is energy that is carried by subatomic particles and photons capable of causing atoms to lose electrons and become ions. For example, this radiation is given off by the radioactive decay of unstable atoms, X-ray machines, particle accelerators, and nuclear reactions such as fission.