noun Download 🔗Share An opening, gap, or hole, usually small and narrow Examples : "an aperture in a wall" gap part technology device physics Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share Something which restricts the diameter of the light path through one plane in an optical system. Examples : "The camera's aperture controlled how much light entered the lens, affecting the brightness of the photograph. " technology physics device Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share The diameter of the aperture (in the sense above) which restricts the width of the light path through the whole system. For a telescope, this is the diameter of the objective lens. Examples : "This telescope has a 100cm aperture." astronomy physics technology science Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share (communications) The (typically) large-diameter antenna used for receiving and transmitting radio frequency energy containing the data used in communication satellites, especially in the geostationary belt. For a comsat, this is typically a large reflective dish antenna; sometimes called an array. Examples : "The satellite dish, with its large aperture, allowed the television station to receive a strong signal from the communication satellite. " technology communication electronics space astronomy signal device machine system Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share (of a right circular cone) The maximum angle between the two generatrices. Examples : "If the generatrix makes an angle θ to the axis, then the aperture is 2θ." math technical physics Chat with AIVocabulary GamePractice Reading
