Roentgen
Roentgen (Röntgen)
Roentgen (pronounced: /ˈrɛntɡən/), also spelled as Röntgen, is a unit of measurement for ionizing radiation. It is named after the German physicist Wilhelm Conrad Röntgen, who discovered X-rays in 1895.
Etymology
The term "Roentgen" is derived from the name of Wilhelm Conrad Röntgen, the German physicist who first discovered and studied X-rays. The International Union of Pure and Applied Chemistry (IUPAC) adopted the name "Roentgen" in 1928 to honor Röntgen's significant contribution to the field of radiology.
Definition
A Roentgen is defined as the amount of radiation required to liberate positive and negative charges of one electrostatic unit of charge in one cubic centimeter of dry air at standard temperature and pressure (STP).
Related Terms
- Radiation: The emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.
- Ionizing radiation: Type of radiation that carries enough energy to detach electrons from atoms or molecules, thereby ionizing them.
- X-ray: A form of electromagnetic radiation, similar to light but of shorter wavelength, and capable of penetrating solids and of ionizing gases.
- Wilhelm Conrad Röntgen: German mechanical engineer and physicist, who, on 8 November 1895, produced and detected electromagnetic radiation in a wavelength range known as X-rays or Röntgen rays.
See Also
External links
- Medical encyclopedia article on Roentgen
- Wikipedia's article - Roentgen
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