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ELECTROMAGNETIC SPECTRUM
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
The entire frequency range of electromagnetic waves
Classified under:
Nouns denoting natural phenomena
Hypernyms ("electromagnetic spectrum" is a kind of...):
spectrum (an ordered array of the components of an emission or wave)
Meronyms (parts of "electromagnetic spectrum"):
color spectrum; visible spectrum (the distribution of colors produced when light is dispersed by a prism)
ultraviolet spectrum (the spectrum of ultraviolet radiation)
radio-frequency spectrum; radio spectrum (the entire spectrum of electromagnetic frequencies used for communications; includes frequencies used for radio and radar and television)
microwave spectrum (the part of the electromagnetic spectrum corresponding to microwaves)
microwave (a short electromagnetic wave (longer than infrared but shorter than radio waves); used for radar and microwave ovens and for transmitting telephone, facsimile, video and data)
line (a single frequency (or very narrow band) of radiation in a spectrum)
light; visible light; visible radiation ((physics) electromagnetic radiation that can produce a visual sensation)
infrared spectrum (the spectrum of infrared radiation)
gamma radiation; gamma ray (electromagnetic radiation emitted during radioactive decay and having an extremely short wavelength)
actinic radiation; actinic ray (electromagnetic radiation that can produce photochemical reactions)
EHF; extremely high frequency (30 to 300 gigahertz)
SHF; superhigh frequency (3 to 30 gigahertz)
UHF; ultrahigh frequency (300 to 3000 megahertz)
very high frequency; VHF (30 to 300 megahertz)
HF; high frequency (3 to 30 megahertz)
medium frequency; MF (300 to 3000 kilohertz)
LF; low frequency (30 to 300 kilohertz)
very low frequency; VLF (3 to 30 kilohertz)
ELF; extremely low frequency (below 3 kilohertz)
radio frequency (an electromagnetic wave frequency between audio and infrared)
