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单词 gamma ray
释义

gamma ray in American English

1. 
electromagnetic radiation having a wavelength of 10-9 centimeters or less: may be produced by the reactions of nuclei or elementary particles or by the interaction of high energy electrons with matter
2. 
a stream of gamma rays

gamma ray in American English

noun Physics
1. 
a photon of penetrating electromagnetic radiation (gamma radiation) emitted from an atomic nucleus
2. 
a photon emitted by an electron as a result of internal conversion
3. 
electromagnetic radiation with wavelengths shorter than approximately one tenth of a nanometer
Word origin
[1900–05]This word is first recorded in the period 1900–05. Other words that entered Englishat around the same time include: clone, decompression, elder statesman, hormone, internship

Examples of 'gamma ray' in a sentence
gamma ray

The gamma ray beam was fired directly into the ground along the entire route.
Times, Sunday Times (2006)
We're particularly focused on the detection of gamma-ray radiation, developing detectors including handheld devices.
Times, Sunday Times (2008)
By housing the atom inside a crystal, it is possible for the nucleus to emit or absorb a gamma ray essentially without recoil.
Times, Sunday Times (2012)
It may arrive thanks to a massive gamma ray burst from space, instantly sterilising the entire planet.
Times, Sunday Times (2016)
And instruments were flooded with five times more energy than in the next biggest gamma ray explosion in 1999.
The Sun (2013)
The craft has cameras, an infra-red spectrometer and a gamma ray and neutron detector to probe surfaces from orbit.
Times, Sunday Times (2007)
The first decent gamma ray burst would mean the end for humans, but life would persist in the oceans.
Times, Sunday Times (2017)
That fear has receded but it is still possible that a future gamma-ray burst could head our way with very little warning.
The Sun (2012)
Highenergy gamma-ray astronomy has since become one of the most active topics of space research.
Times, Sunday Times (2008)
Some stellar explosions, called gamma-ray bursters, are especially dangerous because all their lethal rays are focused into a narrow beam, like a searchlight.
The Sun (2012)
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更新时间：2025/1/9 17:51:17