But when feet feel cold but are not cold to the touch, a possible cause is a neurologic problem, such as peripheral neuropathy. Of course, feet can get cold for many reasons. The most obvious is a cold environment, along with a lack of proper shoes or socks.
X-RAY PHOTON. A brief definition of an x-ray photon was previously stated. However, a more comprehensive definition is necessary for the next series of photon actions. X-ray photons are electromagnetic rays produced in the x-ray tube head when electrons from the cathode filament strike the anode target. They are bundles of pure energy. The photons transfer their energy to the substance through which they pass whether it be air, an x-ray film, or the living tissue of the patient or the specialist. They cannot be seen or felt. a. Photon Action Upon Atoms. (1) Photon collision with the nucleus of an atom. The photon may strike the nucleus of an atom.
An x-ray (radiograph) is a noninvasive medical test that helps physicians diagnose and treat medical conditions. Imaging with x-rays involves exposing a part of the body to a small dose of ionizing radiation to produce pictures of the inside of the body. X-rays are the oldest and most frequently used form of medical imaging.