Radiation measure

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Possible Answers: REM, ROENTGEN.

Random information on the term “REM”:

R.E.M. was an American rock band from Athens, Georgia, that was formed in 1980 by drummer Bill Berry, guitarist Peter Buck, bassist/backing vocalist Mike Mills, and lead vocalist Michael Stipe. One of the first alternative rock bands, R.E.M. was noted for Buck’s ringing, arpeggiated guitar style, Stipe’s particular vocal quality and obscure lyrics, and Mills’ melodic basslines and backing vocals. R.E.M. released its first single—”Radio Free Europe”—in 1981 on the independent record label Hib-Tone. The single was followed by the Chronic Town EP in 1982, the band’s first release on I.R.S. Records. In 1983, the group released its critically acclaimed debut album, Murmur, and built its reputation over the next few years through subsequent releases, constant touring, and the support of college radio. Following years of underground success, R.E.M. achieved a mainstream hit in 1987 with the single “The One I Love”. The group signed to Warner Bros. Records in 1988, and began to espouse political and environmental concerns while playing large arenas worldwide.

REM on Wikipedia

Random information on the term “ROENTGEN”:

The roentgen or röntgen (/ˈrɛntɡən, -dʒən/) (symbol R) is a legacy unit of measurement for the exposure of X-rays and gamma rays up to several megaelectronvolts. It is a measure of the ionization produced in air by X-rays or gamma radiation and it is used because air ionization can be measured directly. It is named after the German physicist Wilhelm Röntgen, who discovered X-rays. Originating in 1908, this unit has been redefined and renamed over the years. It was last defined by the US National Institute of Standards and Technology (NIST) in 1998 as 2.58×10−4 C/kg, (i.e. 1 C/kg = 3876 R) with a recommendation that the definition be given in every document where the roentgen is used. One roentgen of air kerma (kinetic energy released per unit mass) deposits 0.00877 grays (0.877 rads) of absorbed dose in dry air, or 0.0096 Gy (0.96 rad) in soft tissue. One roentgen (air kerma) of X-rays may deposit anywhere from 0.01 to 0.04 Gy (1.0 to 4.0 rad) in bone depending on the beam energy. This tissue-dependent conversion from kerma to absorbed dose is called the F-factor in radiotherapy contexts. The conversion depends on the ionizing energy of a reference medium, which is ambiguous in the latest NIST definition. Even where the reference medium is fully defined, the ionizing energy of the calibration and target mediums are often not precisely known.[clarification needed]

ROENTGEN on Wikipedia