It has been suggested that this article or section be merged with delta ray. (Discuss)
It is requested that this article (or a section of this article) be expanded.
See the request at Wikipedia:Requests for expansion or elsewhere on this talk page. Wikipedia does not have an article with this exact name. ... Delta ray is a term that can been used for very fast electrons produced in quantity by alpha particles or other fast energetic charged particles knocking orbiting electrons out of atoms. ... Image File history File links Wikipedia Logo File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ...
Delta radiation is a type of radiation, specifically, a particle radiation comprised of secondary electrons emitted when ionizing radiation passes through matter. Radiation has a variety of different meanings. ... Particle radiation is the radiation of energy by means of small fast-moving particles that have energy and mass. ... Properties The electron is a subatomic particle. ... Ionizing radiation is a type of particle radiation in which an individual particle (for example, a photon, electron, or helium nucleus) carries enough energy to ionize an atom or molecule (that is, to completely remove an electron from its orbit). ... Matter is commonly referred to as the substance of which physical objects are composed. ...
Polar (Delta 233) is observing Earth's polar regions to study the effects of the solar wind on the ionosphere and magnetosphere.
Landsat-7 (Delta 268) is the latest addition to the program, frequently referred to as "the central pillar of the national remote sensing capability," that has been continuously providing Earth images in visible and infrared wavelengths since 1972.
IMAGE (Delta 277) is on a five-year extended mission in a highly elliptical orbit, observing the response of the Earth's magnetosphere to changes in the solar wind.
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