radian
— Noun
– English
～ the unit of plane angle adopted under the Systeme International d'Unites; equal to the angle at the center of a circle subtended by an arc equal in length to the radius (approximately 57.295 degrees)
radiance
— Noun
– English
～ the quality of being bright and sending out rays of light
radiance
— Noun
– English
～ an attractive combination of good health and happiness; "the radiance of her countenance"
radiance
— Noun
– English
～ the amount of electromagnetic radiation leaving or arriving at a point on a surface
radiancy
— Noun
– English
～ the quality of being bright and sending out rays of light
radiant flux
— Noun
– English
～ the rate of flow of radiant energy (electromagnetic waves)
radiant heating
— Noun
– English
～ heating a building by radiation from panels containing hot water or electrical heaters
radiant energy
— Noun
– English
～ energy that is transmitted in the form of (electromagnetic) radiation; energy that exists in the absence of matter
radiatio optica
— Noun
– English
～ a nerve pathway from the lateral geniculate body to the visual cortex
radiation
— Noun
– English
～ the act of spreading outward from a central source
radiation pyrometer
— Noun
– English
～ a pyrometer for estimating the temperature of distant sources of heat; radiation is focussed on a thermojunction connected in circuit with a galvanometer
radiation
— Noun
– English
～ syndrome resulting from exposure to ionizing radiation (e.g., exposure to radioactive chemicals or to nuclear explosions); low doses cause diarrhea and nausea and vomiting and sometimes loss of hair; greater exposure can cause sterility and cataracts and some forms of cancer and other diseases; severe exposure can cause death within hours; "he was suffering from radiation"
radiation
— Noun
– English
～ the spread of a group of organisms into new habitats
radiation
— Noun
– English
～ the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
radiation diagram
— Noun
– English
～ graphical representation (in polar or Cartesian coordinates) of the spatial distribution of radiation from an antenna as a function of angle
radiation
— Noun
– English
～ (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance
radiation
— Noun
– English
～ energy that is radiated or transmitted in the form of rays or waves or particles
radiation field
— Noun
– English
～ a field that represents the energy lost from the radiator to space
radiation
— Noun
– English
～ a radial arrangement of nerve fibers connecting different parts of the brain