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cathode ray collapse: a beam of electrons emitted by the cathode of an electrical discharge tube

photoemission collapse: an emission of photoelectrons (especially from a metallic surface)

beta particle collapse: a high-speed electron or positron emitted in the decay of a radioactive isotope

X ray collapse: electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target

photon collapse: a quantum of electromagnetic radiation; an elementary particle that is its own antiparticle

radiotherapy collapse: (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance

ray collapse: cartilaginous fishes having horizontally flattened bodies and enlarged winglike pectoral fins with gills on the underside; most swim by moving the pectoral fins; any of the stiff bony rods in the fin of a fish; a branch of an umbel or an umbelliform inflorescence; (mathematics) a straight line extending from a point; emit as rays; "That tower rays a laser beam for miles across the sky"

radiogram collapse: a photographic image produced on a radiosensitive surface by radiation other than visible light (especially by X-rays or gamma rays); a message transmitted by wireless telegraphy

radar collapse: measuring instrument in which the echo of a pulse of microwave radiation is used to detect and locate distant objects

octet collapse: a musical composition written for eight performers; eight people considered as a unit; a set of eight similar things considered as a unit; eight performers or singers who perform together

streamer collapse: a newspaper headline that runs across the full page; light that streams; "streamers of flames"

radiation collapse: the act of spreading outward from a central source; a radial arrangement of nerve fibers connecting different parts of the brain; the spread of a group of organisms into new habitats; energy that is radiated or transmitted in the form of rays or waves or particles; the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay

proton collapse: a stable particle with positive charge equal to the negative charge of an electron

neutron collapse: an elementary particle with 0 charge and mass about equal to a proton; enters into the structure of the atomic nucleus

alpha particle collapse: a positively charged particle that is the nucleus of the helium atom; emitted from natural or radioactive isotopes

meson collapse: an elementary particle responsible for the forces in the atomic nucleus; a hadron with a baryon number of 0

television collapse: a telecommunication system that transmits images of objects (stationary or moving) between distant points; broadcasting visual images of stationary or moving objects; "she is a star of screen and video"; "Television is a medium because it is neither rare nor well done" - Ernie Kovacs

ribbon collapse: notion consisting of a narrow strip of fine material used for trimming; a long strip of inked material for making characters on paper with a typewriter; any long object resembling a thin line; "a mere ribbon of land"; "the lighted ribbon of traffic"; "from the air the road was a grey thread"; "a thread of smoke climbed upward"

irradiation collapse: (Pavolvian conditioning) the elicitation of a conditioned response by stimulation similar but not identical to the original stimulus; the apparent enlargement of a bright object when viewed against a dark background; (physiology) the spread of sensory neural impulses in the cortex; the condition of being exposed to radiation

radiology collapse: the branch of medical science dealing with the medical use of X-rays or other penetrating radiation

optics collapse: the branch of physics that studies the physical properties of light

elementary particle collapse: (physics) a particle that is less complex than an atom; regarded as constituents of all matter

pencil collapse: a thin cylindrical pointed writing implement; a rod of marking substance encased in wood; a cosmetic in a long thin stick; designed to be applied to a particular part of the face; "an eyebrow pencil"; a figure formed by a set of straight lines or light rays meeting at a point; graphite (or a similar substance) used in such a way as to be a medium of communication; "the words were scribbled in pencil"; "this artist's favorite medium is pencil"; write, draw, or trace with a pencil; "he penciled a figure"

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