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If I understand it correctly, the two units measure quite different things, and can't be directly compared.
The curie is a unit of radioactivity, while the roentgen is a unit of radiation exposure. The curie is equal to 3.7x1010 disintegrations per second or becquerels. A roentgen is that amount of x-rays or gamma rays which will produce 2.58x10-4 coulombs/kg of dry air. Both the curie and the roentgen are units which are primarily of historical interest, except in the US where they are still commonly used. In the rest of the world, they have largely been replaced by the SI units becquerel and coulomb/kg. Also, it is more common to measure air kerma (in units of joule/kg or gray) than to measure exposure. This latter change is because air kerma, as a measure of energy deposited per unit mass, is more directly related to dose than is exposure, a measure of ionization produced per unit mass or volume.
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Who is the inventor of xray?
Wilhelm Conrad Rontgen, but Marie Curie or better known as Madam Curie invented x-ray vans and discovered uranium.
What did Wilhelm Rontgen invent?
Wilhelm Rontgen invented the X-Ray machine in 1895 while he was a professor at the University of Munich.
What did Wilhelm Rontgen discover?
X-rays.
What did Wilhelm rontgen do for a career?
Wilhelm Roentgen was a physicist.
Who is Wilhelm Rontgen?
A man who invented the X-Ray in 1895.
Who is the inventor of xray?
Wilhelm Conrad Rontgen, but Marie Curie or better known as Madam Curie invented x-ray vans and discovered uranium.
What else did murie curie invent besides the x ray?
Marie Curie did not invent the X-ray machine; this was Mr. Rontgen who figured out how to produce radiographs. Ms. Curie was one of the pioneers who first identified and described radiation; this is why radiation levels are often measured in curies - the unit was named in her honor.
What are Wilhem Rontgen famous for and her biography?
Wilheim Rontgen Wilheim Rontgen
What is a unit of radioactive energy called?
i believe it is curie
What atomic number is curie?
A curie is a non-SI unit of radioactivity. It is not a chemical element and so does not have an atomic number.
Whose name is used as a unit of measurement of radioactivity of an element?
According to my trusted Random House College Dictionary (copyright 1984), this unit is the curie, named after Marie Curie. One curie = 37.0 billion disintegrations per second.
Whose name is used as unit of measurement of the radioactivity of an element?
According to my trusted Random House College Dictionary (copyright 1984), this unit is the curie, named after Marie Curie. One curie = 37.0 billion disintegrations per second.
How did Wilhelm Rontgen die?
Wilhelm Rontgen died of cancer of the intestine.
What is the difference between rad and rem?
The Rad is a unit of ionizing radiation, measuring its energy distribution in air. A Rontgen is similar, but it measures the energy absorbed by an object. A REM is a Rontgen Equivalent Man, so it measures the energy absorbed by a human being.
What is a millicurie?
There are one thousand millicuries in a Curie. The Curie is a non-SI unit of measure of radioactivity. One Curie is roughly the activity of 1 gram of the radium isotope 226Ra, a substance studied by Marie and Pierre Curie.
What is the basic unit used to describe the intensity of radioactivity?
Curie or Becquerel
Is radiation measured in emissionssec called the curie?
Curie (Ci) is the old unit of radioactivity; now is used in SI the becquerel. The correct word is decays not emissions. 1 curie = 3,7.1010 decays/second
