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Home > Radiation

Within physics, related concepts are:

• Ionizing radiation is a stream of particles (photons or other particles) with sufficient energy to cause ionization of atoms or molecules.
• Non-ionizing radiation does not have this sufficient energy.
• Electromagnetic radiation: light is the visible form; thermal radiation is (usually) the heat form.
• Gravitational radiation
• Particle radiation is any kind of radiation in which the individual elements behave like particles, for example fast or slow Neutron radiation.
• Cherenkov radiation is the emission of radiation by a particle moving through an insulating medium faster than the speed of light in that medium.
• Synchrotron radiation is the emission of radiation by an charged particle undergoing acceleration. This happens, for example, if the particle moves in a circle, as in a synchrotronThis article is concerned with the synchrotron device an atomic particle accelerator. For applications of the synchrotron radiation produced by various cyclic paticle accelerators see synchrotron light . A synchrotron is a particular type of cyclic partic.

In BiologyBiology studies the variety of life clockwise from top-left E. coli tree fern, gazelle, Goliath beetle Biology is the science of life. It is concerned with the characteristics and behaviors of organisms, how species and individuals come into existence, an, adaptive radiationAdaptive radiation describes the rapid speciation of a single or a few species to fill many ecological niches. This is an evolutionary process driven by mutation and natural selection. Adaptive radiation often occurs when a species is introduced to a new is a process in evolutionary biologyEvolutionary biology is a subfield of biology concerned with the origin and descent of species, as well as their change over time, i. their evolution. One who studies evolutionary biology is known as an evolutionary biologist or less frequently evolutioni by which one species becomes many in order to adapt to specific ecological nicheIn ecology, a niche is a term describing the position of a species or population in an ecosystem. More formally, the niche includes how a population responds to the abundance of its resources and enemies (e. by growing when resources are abundant, and pres.

Radiation is sometimes also used, inaccurately, to refer to radioactive contaminationRadioactive contamination is the uncontrolled distribution of radioactive material in a given environment. Many radioactive isotopes are produced artificially, either for their specific properties (such as medical radioisotopes) or as a byproduct (such as, the release of radioactive isotopes into the environment. These isotopes then release ionizing radiation, which can be especially severe if the isotopes have been taken up by plants, animals or humans, since the isotopes then release their ionizing radiation from inside the organism.

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RadiationRadiation generally means the transmission of objects or information from a source into a surrounding medium or destination. Within physics, related concepts are: Ionizing radiation is a stream of particles (photons or other particles) with sufficient ene Radiation therapyRadiation therapy (or radiotherapy is the medical use of ionizing radiation as part of cancer treatment to control malignant cells (not to be confused with radiology, the use of radiation in medical imaging and diagnosis). Although radiotherapy is often u Radiation Laboratory at the Massachusetts Institute of TechnologyThe Radiation Laboratory or often RadLab at Massachusetts Institute of Technology was in operation from October 1940 until December 31, 1945. The Radiation Laboratory was one division of the National Defense Research Committee, a commission established by Radiation angleRadiation angle In fiber optics, half the vertex angle of the cone of light emitted at the exit face of an optical fiber. The cone boundary is usually defined (a) by the angle at which the far-field irradiance has decreased to a specified fraction of its Radiation modeFor an optical fiber, Radiation mode or unbound mode is an unbound mode. In an optical fiber, a radiation mode is one having fields that are transversely oscillatory everywhere external to the waveguide, and which exists even at the limit of zero waveleng Radiation patternIn telecommunication, the term radiation pattern has the following meanings: 1. The variation of the field intensity of an antenna as an angular function with respect to the axis. Note A radiation pattern is usually represented graphically for the far-fie Radiation scattering Radiation pressure Radiation poisoning Radiation oncologist Radiation therapist Radiation protection Radiation resistance Radiation of sound Radiation budget