Library / English Dictionary

    PHOTON

    Pronunciation (US): Play  (GB): Play

     I. (noun) 

    Sense 1

    Meaning:

    A quantum of electromagnetic radiation; an elementary particle that is its own antiparticleplay

    Classified under:

    Nouns denoting natural objects (not man-made)

    Hypernyms ("photon" is a kind of...):

    gauge boson (a particle that mediates the interaction of two elementary particles)

    Holonyms ("photon" is a part of...):

    electromagnetic radiation; electromagnetic wave; nonparticulate radiation (radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge)

    Credits

     Context examples: 

    Since it orbits the hot white dwarf at close range, making its way around it in just 10 days, the high-energy photons from the star are gradually blowing away the planet's atmosphere.

    (First Giant Planet around White Dwarf Found, ESO)

    In-111 MoAb M170 emits gamma radiation and X-Ray photons, thereby allowing detection of tumor localization and distribution of MoAb M170 in diagnostic imaging procedures.

    (In 111 Monoclonal Antibody M170, NCI Thesaurus)

    In-111 MoAb Lym-1 emits gamma radiation and X-Ray photons that can be captured by gamma camera allowing imaging of tumor cells that express HLA-DR antigen.

    (In 111 Monoclonal Antibody Lym-1, NCI Thesaurus)

    A measurement of the amount of luminescence emitted from a given sample due to the absorption of a photon by that sample.

    (Fluorescence Units, NCI Thesaurus)

    This radioimmunoconjugate emits gamma radiation and X-ray photons, thereby allowing detection of tumor localization and distribution of MoAb HuS193 in diagnostic imaging procedures.

    (In 111 Monoclonal Antibody Hu3S193, NCI Thesaurus)

    In 111 Folic Acid emits gamma radiation and X-Ray photons that can be captured by gamma camera allowing imaging of tumor cells that express folate receptors.

    (In 111 Folic Acid, NCI Thesaurus)

    The photo-excited states – when photons of light are absorbed by the semiconducting material – need to move so that they can be “harvested” before they lose their energy.

    (Plastic crystals hold key to record-breaking energy transport, Universities of Cambridge)

    A radiopharmaceutical agent comprised of a pegylated arginine-glycine-aspartic acid dimer (PRGD2) labeled with gallium Ga 68, with potential alphaVbeta3 integrin imaging activity upon positron emission topography (PET) or single photon emission computed tomography (SPECT).

    (Gallium Ga 68-labeled BNOTA-PRGD2, NCI Thesaurus)

    Inside the photon ring is the black hole’s shadow, an area roughly twice the size of the event horizon — its point of no return.

    (NASA Visualization Shows a Black Hole’s Warped World, NASA)

    In-111 MoAb LL2 emits gamma radiation and X-Ray photons that can be captured by gamma camera allowing imaging of tumor cells that express CD22 antigen.

    (In 111 Monoclonal Antibody LL2, NCI Thesaurus)


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