Mindblown: a blog about philosophy.

  • Watch glass

    A shallow, saucer-like glass dish, resembling the glass cover widely used to cover the face of a large pocket watch.  

  • 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.  

  • Tempered glass

    Glass that has been heat-treated to increase the force required to break it.  

  • Safety glass

    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.  

  • Polarized glass

    Glass treated with a medium that permits the exiting light waves to vibrate in only one direction.  

  • Photochromic glass

    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.  

  • Leaded glass

    Safety glass that contains lead, used in radiology to help protect personnel from x-rays. The control booth utilizes a lead-impregnated glass window to safeguard the operator from harmful radiation.  

  • Ground glass

    Abnormal shadowing seen radiographically. In chest x-ray films, it may indicate interstitial fibrosis of the lung; in abdominal films, it suggests ascites.  

  • Glass

    A hard, brittle, amorphous, transparent material composed of silica and various bases.  

  • Glasgow outcome scale

    A scale that assesses current neurological awareness of the environment, and recovery and disability in all types of brain injury. The scale is to be used during the evaluation of trauma, stupor, or coma, and at prescribed time intervals, such as 3 months, 6 months, and 1 year after injury. The Glasgow group reports the…

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