#radiation the physical phenomenon of radiating energy in the form of waves or particles
supertype: #physical_phenomenon a natural phenomenon involving the physics of matter and energy
subtype: #ionizing_radiation high-energy radiation capable of producing ionization in substances through which it passes
subtype: #alpha_radiation__alpha_ray__alpharay the radiation of alpha particles during radioactive decay
subtype: #beta_radiation__beta_ray__electron_radiation radiation of beta particles during radioactive decay
subtype: #cosmic_ray highly penetrating ionizing radiation of extraterrestrial origin; consisting chiefly of protons and alpha particles; collision with atmospheric particles results in rays and particles of many kinds
subtype: #neutron_radiation__neutronradiation radiation of neutrons (as by a neutron bomb)
subtype: #X_ray__X-radiation__roentgen_ray electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target
subtype: #electromagnetic_radiation__electromagneticradiation__electromagnetic_wave__electromagneticwave__nonparticulate_radiation radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge
subtype: #actinic_radiation__actinic_ray__actinicray electromagnetic radiation that can produce photochemical reactions
subtype: #infrared_radiation__infrared__infrared_light__infrared_emission electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves
subtype: #visible_light__visiblelight__light__visible_radiation__visibleradiation (physics) electromagnetic radiation that can produce a visual sensation; "the light was filtered through a soft glass window"
subtype: #beam_of_light__beam__light_beam__lightbeam__ray__rayoflight__shaft__shaft_of_light a column of light (as from a beacon)
subtype: #heat_ray a ray that produces a thermal effect
subtype: #infrared_ray a ray of infrared radiation; produces a thermal effect (as from an infrared lamp)
subtype: #high_beam the beam of a car's headlights that provides distant illumination
subtype: #moonbeam__moonray a ray of moonlight
subtype: #sunbeam__sunray a ray of sunlight
subtype: #laser_beam__laserbeam a beam of light generated by a laser
subtype: #low_beam__lowbeam the beam of a car's headlights that provides illumination for a short distance
subtype: #candlelight__candle_flame the light provided by a burning candle
subtype: #corona.visible_light one or more circles of light seen around a luminous object
subtype: #counterglow__gegenschein a faint spot of light in the night sky that appears directly opposite the position of the sun; a reflection of sunlight by micrometeoric material in space
subtype: #daylight light during the daytime
subtype: #firelight the light of a fire (especially in a fireplace)
subtype: #fluorescence light emitted during absorption of radiation of some other (invisible) wavelength
subtype: #autofluorescence self-induced fluorescence
subtype: #phosphorescence a fluorescence that persists after the bombarding radiation has ceased
subtype: #friar's_lantern__ignis_fatuus__jack-o'-lantern__will-o'-the-wisp a pale light sometimes seen at night over marshy ground
subtype: #gaslight light yielded by the combustion of illuminating gas
subtype: #glowing__radiance__glow the amount of electromagnetic radiation leaving or arriving at a point on a surface
subtype: #aureole__corona the outermost region of the sun's atmosphere; visible as a white halo during a solar eclipse
subtype: #half-light a grayish light (as at dawn or dusk or in dim interiors)
subtype: #incandescence.visible_light__glow the phenomenon of light emission by a body as its temperature is raised
subtype: #lamplight light from a lamp
subtype: #luminescence light not due to incandescence; occurs at low temperatures
subtype: #bioluminescence luminescence produced by physiological processes (as in the firefly)
subtype: #chemiluminescence luminescence resulting from a chemical reaction as the oxidation of luciferin in fireflies
subtype: #meteor__shooting_star a streak of light in the sky at night that results when a meteoroid hits the earth's atmosphere and air friction causes the meteoroid to melt or vaporize or explode
subtype: #bolide__fireball an especially luminous meteor (sometimes exploding)
subtype: #moonlight__moonshine__moon the light of the moon; "moonlight is the smuggler's enemy"; "the moon was bright enough to read by"
subtype: #starlight the light of the stars
subtype: #sunlight__sunshine__sun the rays of the sun; "the shingles were weathered by the sun and wind"
subtype: #streamer light that streams; "streamers of flames"
subtype: #torchlight light from a torch or torches
subtype: #twilight the diffused light from the sky when the sun is below the horizon but its rays are refracted by the atmosphere of the earth
subtype: #ultraviolet_illumination__ultravioletillumination__ultraviolet__ultraviolet_radiation__ultravioletradiation__ultraviolet_light__ultravioletlight__UV radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays
subtype: #electron_beam__beam__ray a group of nearly parallel lines of electromagnetic radiation
subtype: #cathode_ray__cathoderay a beam of electrons emitted by the cathode of an electrical discharge tube
subtype: #particle_beam a collimated flow of particles (atoms or electrons or molecules)
subtype: #ion_beam__ionbeam__inoic_beam__inoicbeam a beam of ions moving in the same direction at the same speed
subtype: #black-body_radiation__blackbody_radiation__blackbodyradiation 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
subtype: #Hertzian_wave an electromagnetic wave generated by oscillations in an electric circuit
subtype: #gamma_radiation__gammaradiation__gamma_ray__gammaray electromagnetic radiation emitted during radioactive decay and having an extremely short wavelength
subtype: #line.electromagnetic_radiation a single frequency (or very narrow band) of radiation in a spectrum
subtype: #microwave a short electromagnetic wave (longer than infrared but shorter than radio waves); used for radar and microwave ovens
subtype: #radio_wave__radiowave__radio_emission__radioemission__radio_radiation__radioradiation an electromagnetic wave with a wavelength between 0.5 cm to 30,000 m
subtype: #sky_wave__skywave a radio wave that is reflected back to earth by the ionosphere or a communications satellite; permits transmission around the curve of the earth's surface
subtype: #ionospheric_wave__ionosphericwave a sky wave that is reflected by the ionosphere
subtype: #ground_wave a radio wave propagated on or near the earth's surface
subtype: #radio_signal__radiosignal a radio wave used to transmit and receive messages
subtype: #carrier_wave__carrierwave__carrier a radio wave that can be modulated in order to transmit a signal
subtype: #short_wave__shortwave a radio wave with a wavelength less than 100 meters
subtype: #long_wave a radio wave with a frequency less than 300 kilohertz
subtype: #X_ray__X-radiation__roentgen_ray electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target
subtype: #corpuscular_radiation__corpuscularradiation__particulate_radiation__particulateradiation a stream of atomic or subatomic particles that may be charged positively (e.g. alpha particles) or negatively (e.g. beta particles) or not at all (e.g. neutrons)
subtype: #alpha_radiation__alpha_ray__alpharay the radiation of alpha particles during radioactive decay
subtype: #beta_radiation__beta_ray__electron_radiation radiation of beta particles during radioactive decay
subtype: #neutron_radiation__neutronradiation radiation of neutrons (as by a neutron bomb)
subtype: #radioactivity__activity radiation resulting from radioactive decay
subtype: #solar_radiation__solarradiation radiation from the sun
subtype: #solar_flare__solarflare__flare a sudden eruption of intense high-energy radiation from the sun's surface; associated with sunspots and radio interference
subtype: #solar_prominence__solarprominence large eruptions of luminous hydrogen gas that rise thousands of kilometers above the chromosphere
subtype: #solar_wind__solarwind a stream of protons moving radially from the sun
subtype: #radiation.action the act of radiating
subtype: #bombardment the act (or an instance) of subjecting a body or substance to the impact of high-energy particles (as electrons or alpha rays)
1 schema is about #radiation
[pm#graph1_on_radiation
[any #radiation,
may have for pm#radiation_measure: several #radioactivity_unit]
];
No statement uses a specialization of #radiation; click here to add a statement.