Library / English Dictionary

    ELECTROMAGNETIC WAVE

    Pronunciation (US): Play  (GB): Play

     I. (noun) 

    Sense 1

    Meaning:

    Radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric chargeplay

    Synonyms:

    electromagnetic radiation; electromagnetic wave; nonparticulate radiation

    Classified under:

    Nouns denoting natural phenomena

    Hypernyms ("electromagnetic wave" is a kind of...):

    radiation (energy that is radiated or transmitted in the form of rays or waves or particles)

    Meronyms (parts of "electromagnetic wave"):

    photon (a quantum of electromagnetic radiation; an elementary particle that is its own antiparticle)

    Hyponyms (each of the following is a kind of "electromagnetic wave"):

    actinic radiation; actinic ray (electromagnetic radiation that can produce photochemical reactions)

    beam; electron beam; ray (a group of nearly parallel lines of electromagnetic radiation)

    black-body radiation; blackbody radiation (the electromagnetic radiation that would be radiated from an ideal black body; the distribution of energy in the radiated spectrum of a black body depends only on temperature and is determined by Planck's radiation law)

    gamma radiation; gamma ray (electromagnetic radiation emitted during radioactive decay and having an extremely short wavelength)

    line (a single frequency (or very narrow band) of radiation in a spectrum)

    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)

    radio emission; radio radiation; radio wave (an electromagnetic wave with a wavelength between 0.5 cm to 30,000 m)

    roentgen ray; X-radiation; X-ray; X ray (electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target)

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