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- Röntgen_equivalent_physical abstract "The Röntgen equivalent physical or rep (symbol rep) is a unit of absorbed dose first introduced by Herbert Parker in 1945 to replace an improper application of the roentgen unit to biological tissue. It is the absorbed energetic dose before the biological efficiency of the radiation is factored in. The rep has variously been defined as 83 or 93 ergs per gram of tissue (8.3/9.3 mGy) or per cm3 of tissue. At the time, this was thought to be the amount of energy deposited by 1 roentgen. Improved measurements have since found that one roentgen of air kerma deposits 8.77 mGy in dry air, or 9.6 mGy in soft tissue, but the rep was defined as a fixed number of ergs per unit gram. A 1952 handbook from the US National Bureau of Standards affirms that "The numerical coefficient of the rep has been deliberately changed to 93, instead of the earlier 83, to agree with L. H. Gray's 'energy-unit'." It is unclear what was meant by Gray's 'energy unit', since the gray was not defined until the 1970s; perhaps the gram-roentgen he introduced in 1940? The rep was commonly used until the 1960s, but was gradually displaced by the rad starting in 1954 and later the gray starting in 1977.".
- Röntgen_equivalent_physical wikiPageID "3559535".
- Röntgen_equivalent_physical wikiPageLength "3954".
- Röntgen_equivalent_physical wikiPageOutDegree "12".
- Röntgen_equivalent_physical wikiPageRevisionID "679037546".
- Röntgen_equivalent_physical wikiPageWikiLink Absorbed_dose.
- Röntgen_equivalent_physical wikiPageWikiLink Acute_radiation_syndrome.
- Röntgen_equivalent_physical wikiPageWikiLink Category:Radiobiology.
- Röntgen_equivalent_physical wikiPageWikiLink Category:Units_of_radiation_dose.
- Röntgen_equivalent_physical wikiPageWikiLink Erg.
- Röntgen_equivalent_physical wikiPageWikiLink Gray_(unit).
- Röntgen_equivalent_physical wikiPageWikiLink Herbert_Parker_(scientist).
- Röntgen_equivalent_physical wikiPageWikiLink Milligray.
- Röntgen_equivalent_physical wikiPageWikiLink Rad_(unit).
- Röntgen_equivalent_physical wikiPageWikiLink Radiation_poisoning.
- Röntgen_equivalent_physical wikiPageWikiLink Roentgen_(unit).
- Röntgen_equivalent_physical wikiPageWikiLink Roentgen_equivalent_man.
- Röntgen_equivalent_physical wikiPageWikiLink Röntgen_equivalent_man.
- Röntgen_equivalent_physical wikiPageWikiLinkText "Röntgen equivalent physical".
- Röntgen_equivalent_physical wikiPageWikiLinkText "rep".
- Röntgen_equivalent_physical wikiPageWikiLinkText "roentgen equivalent physical (rep)".
- Röntgen_equivalent_physical hasPhotoCollection Röntgen_equivalent_physical.
- Röntgen_equivalent_physical wikiPageUsesTemplate Template:Measurement-stub.
- Röntgen_equivalent_physical wikiPageUsesTemplate Template:Refimprove.
- Röntgen_equivalent_physical wikiPageUsesTemplate Template:Reflist.
- Röntgen_equivalent_physical wikiPageUsesTemplate Template:Sci-stub.
- Röntgen_equivalent_physical wikiPageUsesTemplate Template:Use_dmy_dates.
- Röntgen_equivalent_physical subject Category:Radiobiology.
- Röntgen_equivalent_physical subject Category:Units_of_radiation_dose.
- Röntgen_equivalent_physical comment "The Röntgen equivalent physical or rep (symbol rep) is a unit of absorbed dose first introduced by Herbert Parker in 1945 to replace an improper application of the roentgen unit to biological tissue. It is the absorbed energetic dose before the biological efficiency of the radiation is factored in. The rep has variously been defined as 83 or 93 ergs per gram of tissue (8.3/9.3 mGy) or per cm3 of tissue. At the time, this was thought to be the amount of energy deposited by 1 roentgen.".
- Röntgen_equivalent_physical label "Röntgen equivalent physical".
- Röntgen_equivalent_physical sameAs Rep_(Einheit).
- Röntgen_equivalent_physical sameAs Röntgen_equivalent_physical.
- Röntgen_equivalent_physical sameAs m.09lkcn.
- Röntgen_equivalent_physical sameAs Q2144957.
- Röntgen_equivalent_physical sameAs Q2144957.
- Röntgen_equivalent_physical wasDerivedFrom Röntgen_equivalent_physical?oldid=679037546.
- Röntgen_equivalent_physical isPrimaryTopicOf Röntgen_equivalent_physical.