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It was originally defined as "the quantity or mass of radium emanation in equilibrium with one gram of radium (element)", [1] but is currently defined as 1 Ci = 3.7 × 10 10 decays per second [4] after more accurate measurements of the activity of 226 Ra (which has a specific activity of 3.66 × 10 10 Bq/g [5]).
[1] [2] It is usually given in units of becquerel per kilogram (Bq/kg), but another commonly used unit of specific activity is the curie per gram (Ci/g). In the context of radioactivity , activity or total activity (symbol A ) is a physical quantity defined as the number of radioactive transformations per second that occur in a particular ...
Disintegrations per minute (dpm) and disintegrations per second (dps) are measures of the activity of the source of radioactivity. The SI unit of radioactivity, the becquerel (Bq), is equivalent to one disintegration per second. This unit should not be confused with cps, which is the number of counts received by an instrument from the source.
The rep has variously been defined as 83 or 93 ergs per gram of tissue (8.3/9.3 mGy) [13] or per cc of tissue. [ 14 ] In 1953 the ICRU recommended the rad, equal to 100 erg/g as a new unit of absorbed radiation, [ 15 ] but then promoted a switch to the gray in the 1970s.
The Rest Is Politics: US has a large U.K. following, as does the aforementioned Pod Save America (which regularly features in the U.K. top 50) and podcast behemoths such as The Ezra Klein Show ...
"The Good Whale" launches on Nov. 14, wherever podcasts are available and on the NYT Audio app. New York Times All Access and Audio subscribers will get exclusive early access to the entire series ...
Pod Save America is an American progressive [1] [2] political podcast developed and distributed by Crooked Media. [ 3 ] [ 4 ] [ 5 ] The podcast debuted in January 2017 and airs three times per week, hosted by a rotating cast of former Barack Obama staffers Jon Favreau , Tommy Vietor , Jon Lovett , and Dan Pfeiffer .
Two co-hosts of the “Pod Save America” podcast on Friday fired back at Biden campaign staffers who have reportedly dismissed their calls for the president to consider stepping down from the ...