Dark matter is matter that is inferred to exist from gravitational effects on visible matter and background radiation, but is undetectable by emitted or scattered electromagnetic radiation.
Scattered radiation increases the radiation dose to surrounding tissues and organs, increasing the risk of radiation-induced damage or cancer. Additionally, scattered radiation can degrade image quality by producing noise and reducing contrast in the images. Proper shielding and alignment of equipment can help minimize the risks associated with scattered radiation.
Visible, ultraviolet, and infrared radiation can all be reflected and scattered by surfaces. When light hits a surface and is scattered, it can disperse in different directions, leading to the perception of reflection.
The factors that determine the severity of the effects of radiation are the dose of radiation received and the type of radiation exposure. Higher doses of radiation and exposure to certain types of radiation, such as ionizing radiation, can lead to more severe effects on the human body.
Radiation directed at Earth can be absorbed or scattered by the atmosphere before reaching the surface. Different types of radiation can interact with particles in the atmosphere, causing them to be reflected, absorbed, or scattered in different directions, preventing them from reaching the Earth's surface in full intensity.
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Direct radiation comes from a single source and follows a straight path, while diffuse radiation is scattered sunlight that has been redirected in various directions by the atmosphere or other surfaces. Direct radiation is more intense and has a more concentrated energy than diffuse radiation.
Radiation
Exposure to high levels of radiation can damage cells and tissues, leading to radiation sickness and long-term health effects such as cancer. In extreme cases, radiation exposure can be fatal.
Radiation
G. J. Dienes has written: 'Studies in radiation effects on solids' 'Radiation effects in solids' -- subject(s): Effect of radiation on, Solids
The effects of radiation are dependent on the intensity and duration of exposure. See related links below for effects.