- Infrasil
- (n)инфрасил (кварцевое стекло)
Deutsch-Russische Wörterbuch der Chemie und Technologie der Silikate.
Infrasil
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Fused quartz — A sphere manufactured by NASA out of fused quartz for use in a gyroscope in the Gravity Probe B experiment. It is one of the most accurate spheres ever created by humans, differing in shape from a perfect sphere by no more than 40 atoms of… … Wikipedia
