Pro-Lite Photometry Lab

Pro-Lite is a specialist supplier of photometric test equipment, supporting the engineers innovating the next generation of ultra-efficient light technology. Pro-lite are a specialist photonics company supplying: detectors; lasers; laser modulators and Q-switches; laser safety equipment; laser power & energy meters; instruments for light measurement; instruments for measuring the optical properties of materials; optics & crystals; opto-mechanics & motion control equipment; and software tools. Pro-Lite also provide photometric measurement services, hire of photometers and colorimeters and run a training course in the science of light measurement and photometry. www.pro-lite.co.uk

more at scitech.quickfound.net Opens with Hollywood actress, moves to discussion of choosing the correct eyewear for fashion and style purposes, then at about 2:45 proceeds to showing the making of optical glass and the cutting and grinding of eyeglass lenses in a glass factory. Public domain film from the Library of Congress Prelinger Archive, slightly cropped to remove uneven edges, with the aspect ratio corrected, and mild video noise reduction applied. The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and equalization (the resulting sound, though not perfect, is far less noisy than the original). en.wikipedia.org Glass is an amorphous (non-crystalline) solid material. Glasses are typically brittle and optically transparent. The most familiar type of glass, used for centuries in windows and drinking vessels, is soda-lime glass, composed of about 75% silica (SiO2) plus Na2O, CaO, and several minor additives. Often, the term glass is used in a restricted sense to refer to this specific use. In science, however, the term glass is usually defined in a much wider sense, including every solid that possesses a non-crystalline (ie, amorphous) structure and that exhibits a glass transition when heated towards the liquid state. In this wider sense, glasses can be made of quite different classes of materials: metallic alloys, ionic melts, aqueous solutions, molecular liquids, and polymers. For many applications (bottles, eyewear ...
Video Rating: 4 / 5