Regions affected by water retention. In most cases of Kidney Failure, impaired kidneys fail to do their basic work including removing extra fluid and keeping useful nutrition in the body. Then, excessive amount of fluid may accumulate in legs, feet, ankles, around eyelids, hands, abdomen, lung, etc.
, X-rays X-rays: High frequency electromagnetic radiation, used for medical imaging. , most of the ultraviolet and some of the infrared [infrared radiation: Electromagnetic radiation emitted from a hot object. ] are absorbed by the atmosphere and do not reach the Earthâs surface.ight, some infrared, some ultraviolet ultraviolet radiation: Electromagnetic radiation with a frequency between that of visible light and X-rays. , and microwaves microwaves: Electromagnetic radiation with a frequency between that of visible light and radio waves.
Wave Physics Glossary and Terms. Absorption - Absorption is when some of the wave's energy is taken away when a wave encounters a medium. Amplitude - The measure of the displacement of the wave from its rest position. The higher the amplitude of a wave, the higher its energy. Coherence - Two waves are said to be coherent when they have a constant phase difference between them. Crest - The crest is the highest point of a wave. The opposite of the crest is the trough. Diffraction - Diffraction is when a wave remains in the same medium, but bends around an obstacle. Electromagnetic Waves - Electromagnetic waves are waves that can travel through a vacuum.