gamma rays
Definition
Noun (plural): gamma rays are a form of high-energy electromagnetic radiation, emitted by radioactive substances or during nuclear reactions, with wavelengths shorter than X-rays and greater penetrating power.
Usage Examples
- (High-energy radiation applied in medical therapy.)
- (Electromagnetic radiation from space phenomena.)
- (Dangerous radiation from radioactive sources.)
Advanced Usage
"gamma-ray burst": a brief, intense emission of gamma rays from a distant astronomical source, often associated with the collapse of massive stars.
- The satellite recorded a gamma-ray burst lasting only a few seconds. (A short-lived cosmic explosion of high-energy radiation.)
"gamma-ray spectroscopy": the study of the energy spectrum of gamma rays to identify radioactive elements.
- Geologists use gamma-ray spectroscopy to analyze rock samples. (Technique for detecting specific radioactive isotopes.)
Variants and Related Words
Gamma (noun): the third letter of the Greek alphabet (Γ, γ); used as a prefix in scientific terms.
- The gamma particle is a type of radiation. (A nuclear emission named after the Greek letter.)
Ray (noun): a narrow beam of light or other radiation.
- A ray of sunlight entered the room. (A line of light.)
Synonyms
- High-energy photons: particles of light with very short wavelengths.
- Nuclear radiation: radiation emitted from atomic nuclei (though this is broader and includes alpha and beta particles).
Phrasal Verbs
- (No common phrasal verbs exist specifically with "gamma rays"; the term is typically used as a fixed noun phrase.)
Related Idioms
- (No common idioms directly involve "gamma rays"; the term is technical and not used in figurative language.)