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a thin glass disc or plate covering an object examined under the microscope.
1. See cover slip.
2. A protective sheet of glass for a transparency.
A hard, brittle, amorphous, transparent material composed of silica and various bases.
fiber glassSee: fiberglass
Abnormal shadowing seen radiographically. In chest x-ray films, it may indicate interstitial fibrosis of the lung; in abdominal films, it suggests ascites.
Safety glass that contains lead, used in radiology to help protect personnel from x-rays.
Glass that is manufactured to appear clear until light strikes it. When used in sunglasses, the lens becomes dark and reduces the amount of light transmitted, becoming clear again when no longer exposed to bright light.
Glass treated with a medium that permits the exiting light waves to vibrate in only one direction.
A type of laminated glass that meets specific requirements concerning the force necessary to break it and is designed to break without shattering. Its use in automobiles reduces the risk of injury from broken glass.
Glass that has been heat-treated to increase the force required to break it.
ultraviolet transmitting glass
Glass designed to admit ultraviolet radiation through it. It transmits about half of the solar radiation, between the wavelengths of 290 and 320 nm.
Window glass containing quartz for transmitting the ultraviolet rays of sunlight.
A shallow, saucer-like glass dish, resembling the glass cover widely used to cover the face of a large pocket watch.