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Hasil cari dari kata atau frase: Roentgen ray(0.01382 detik)
Found 2 items, similar to Roentgen ray.
English → English (WordNet)
Definition: roentgen ray
n : electromagnetic radiation of short wavelength produced when
high-speed electrons strike a solid target [syn: X ray,
English → English (gcide)
Definition: Roentgen ray
Roentgen ray \Roentgen ray\
the Anglicised spelling of R["o]ntgen ray. Same as X ray.
Rontgen ray \R["o]ntgen ray\, Roentgen ray \Roentgen ray\ [see
An X-ray; originally, the term was applied to any of the
rays produced when cathode rays strike upon surface of a
solid (as the wall of the vacuum tube), but now it refers
specifically to electromagnetic radiation having wavelengths
from 10^-3 nm to 10 nm, immediately below ultraviolet
radiation on the wavelength scale. R["o]ntgen rays are noted
for their penetration of opaque substances, as wood and
flesh, their action on photographic plates, and their
fluorescent effects. They were called X rays by their
discoverer, W. K. R["o]ntgen. They are one of the forms of
ionizing radiation, which can have damaging effects on living
cells. They also ionize gases, but cannot be reflected, or
polarized, or deflected by a magnetic field. They are used in
examining opaque objects, especially in medicine for
visualizing organs and other objects inside the human body,
as for locating fractures or bullets, and examining internal
organs for abnormalities.
[Webster 1913 Suppl. +PJC]