A unit of radioactivity. (Specifically, the quantity of any radioactive nuclide in which the number of disintegrations per second is 3.7 X 10 to the 10th). Named for Marie and Pierre Curie who did pioneering research in radioactivity, distinguished alpha, beta, and gamma radiation, discovered polonium and radium, and isolated pure radium. They shar [..]

Name for the former unit of activity. The activity of 1 curie, symbol:Ci, is equal to the decay of 3.7·1010 (37 billion) atoms of a radionuclide per second. The activity unit curie was replaced by the [..]

"unit of radioactivity," 1910, named for Pierre Curie (1859-1906) or his wife, Marie (1867-1934), discoverers of radium.

One of three units used to measure the intensity of radioactivity in a sample of material. This value refers to the amount of ionizing radiation released when an element (such as uranium) spontaneously emits energy as a result of the radioactive decay (or disintegration) of an unstable atom. Radioactivity is also the term used to describe the rate [..]

An older unit of radioactive decay rate defined as 3.7 x 1010 disintegrations per second. The gamma curie is sometimes defined correspondingly as the activity of material in which this number of gamma [..]

A measure of radioactivity. Now superseded by the Becquerel: 1 Ci = 3.7x1010Bq.

The original unit used to express the decay rate of a sample of radioactive material. The curie is equal to that quantity of radioactive material in which the number of atoms decaying per second is eq [..]

The quantity of any radioactive nuclide that has a disintegration rate of 3.7 x 1O1O becquerels.

The curie is a unit used to measure a radioactivity. One curie is that quantity of a radioactive material that will have 37,000,000,000 transformations in one second. Often radioactivity is expressed in smaller units like: thousandths (mCi), one millionths (uCi) or even billionths (nCi) of a curie. The relationship between becquerels and curies is: [..]

The basic unit used to describe the intensity of radioactivity in a sample of material. One curie equals thirty-seven billion disintegrations per second, or approximately the radioactivity of one gram [..]

The Curie (Ci) is the traditional unit of Activity (where its SI equivalent in the Becquerel ). 1 Ci is equivalent to 3.7 E10 disintegrations per second (dps) and since 1Bq=1dps it follows that 1Ci = [..]

the traditional measure of radioactivity based on the observed decay rate of 1 gram of radium. One curie of radioactive material will have 37 billion disintegrations in 1 second. For more information, [..]

The original unit used to express the decay rate of a sample of radioactive material. The curie is equal to that quantity of radioactive material in which the number of atoms decaying per second is eq [..]

(n) a unit of radioactivity equal to the amount of a radioactive isotope that decays at the rate of 37,000,000,000 disintegrations per second(n) French physicist; husband of Marie Curie (1859-1906)(n) [..]

The Curie (Ci) is an old unit of activity. One curie is a very large amount of radioactivity. It is more common to find activities given in millicurie or microcurie     1 Ci = 37 GBq = 37,000,000,000 [..]

A measure of radioactivity. One Curie of radioactivity is equivalent to 3.7 x 1010 or 37,000,000,000 nuclear disintegrations per second.

A measure of radioactivity. One curie of radioactivity is equivalent to 3.7 x 1010 or 37,000,000,000 nuclear disintegrations per second.

A measure of radioactivity. One Curie of radioactivity is equivalent to 3.7 X 1010 or 37,000,000,000 nuclear disintegrations per second. back to top

The curie (Ci) is the original term used to describe the amount of radioactive material present or strength of the source. It is based upon the radioactive decay rate of the radionuclide. One curie is [..]