| aperture |
The diameter of the primary lens or mirror of a telescope; hence, the best single measure of the light-gathering power of a telescope.
출처: www.fas.org/spp/military/docops/usaf/2020/app-v.ht...
|
|---|---|
| aperture |
In photography, the camera lens opening and its relative diameter. Measured in f-stops, such as f/8, f/ I 1, etc. As the number increases, the size of the aperture decreases, thereby reducing the amount of light passing through the lens and striking the film.
출처: www.ackland.org/tours/classes/glossary.html
|
| aperture |
A small opening in a plate or sheet. In cameras, the aperture is usually variable in the form of an iris diaphragm and regulates the amount of light which passes through the lens to the film.
출처: www.wrightcolorgraphics.com/a.htm
|
| aperture |
A metal block containing a hole through which the radiation (photon or proton) beam passes. Each portal for each patient requires a custom-made aperture. The shape of the hole is the approximate shape of the target being treated by the beam. Every patient has her or his own set of apertures; no other patients use them.
출처: www.llu.edu/proton/patient/glossary.html
|
| aperture |
A small opening such as a camera shutter through which light rays pass to expose film when the shutter is open.
출처: history.nasa.gov/EP-95/glossary.htm
|