Define background radiation. background radiation synonyms, background radiation pronunciation, background radiation translation, English dictionary definition of background radiation. Nuclear radiations arising from within the body and from the surround
: intrusive sound or radiation (see radiation sense 2b) that interferes with received or recorded electronic signals a recording with a lot of background noise b physics : a more or less steady level of noise above which the effect (such as radioactivity) being measured by an apparatus ...
background radiation low-level radiation at the surface of the earth that comes from cosmic rays and from small amounts of radioactive materials in rocks and the atmosphere . discover more example sentences on an average the levels are only 10 times greater than the region's natural background...
What is cosmic background radiation made of? When the Big Bang occurred it released a large amount of heat which spread throughout the universe. As this heat cooled the wavelength can be tracked thanks to knowledge about black body diagrams. It has currently cooled to microwave wavelengths on ...
Learn the definition of radiation and understand the causes of radiation. See the various types of radiation with examples and discover its harmful...
background radiation backhand backhanded See More Nearby Entries Cite this Entry Style “Backhand.”Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/backhand. Accessed 27 Oct. 2024. Copy Citation Share ...
cosmic background radiation - (cosmology) the cooled remnant of the hot big bang that fills the entire universe and can be observed today with an average temperature of about 2.725 kelvin CBR, CMB, CMBR, cosmic microwave background, cosmic microwave background radiation cosmogeny, cosmogony, cosm...
There was a lot of background noise (= that you could hear, but were not listening to). background radiation in the background He prefers to remain in the background and let his assistant talk to the press. A piano was playing gently in the background. Danger was always lurking in th...
back·scat·ter (bak'skat-ĕr), Secondary radiation deflected more than 90° from the primary beam. See:scattered radiation. Farlex Partner Medical Dictionary © Farlex 2012 Cytometry One of two parameters measured in flow cytometry, which is detected at a 90º angle to a laser light beam...
Cosmic microwavebackground radiationis a natural source of microwaves. The radiation is studied to help scientists understand the Big Bang. Stars, including the Sun, are natural microwave sources. Under the right conditions, atoms and molecules can emit microwaves. Man-made sources of microwaves incl...