noun🔗Share開口部, 穴An opening, gap, or hole, usually small and narrow"an aperture in a wall"壁の開口部。partgaparchitecturespacetechnicalChat with AIVocabulary GamePractice Reading
noun🔗Share絞り, 開口部Something which restricts the diameter of the light path through one plane in an optical system."The camera's different apertures control how much light reaches the sensor, affecting the brightness and depth of field in the picture. "カメラのさまざまな絞りは、センサーに届く光の量を制御し、写真の明るさと被写界深度に影響を与えます。physicstechnologydevicescienceChat with AIVocabulary GamePractice Reading
noun🔗Share口径, 直径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."This telescope has a 100cm aperture."この望遠鏡は100cmの口径を持っています。physicsastronomytechnicalsciencedevicesystemChat with AIVocabulary GamePractice Reading
noun🔗Share開口部, アパーチャ(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."The communication satellite used for the global television broadcasts has large apertures to receive and transmit signals clearly. "世界的なテレビ放送に使用される通信衛星は、信号を明確に受信および送信するための大きな開口部を持っています。technologycommunicationelectronicsspaceastronomysignaldevicemachineenergyphysicsChat with AIVocabulary GamePractice Reading
noun🔗Share頂角(of a right circular cone) The maximum angle between the two generatrices."If the generatrix makes an angle θ to the axis, then the aperture is 2θ."母線が軸に対して角度θをなす場合、頂角は2θです。mathChat with AIVocabulary GamePractice Reading
