What is "optical glass"

Usage examples of "optical glass".

Solar energy, concentrated by concave mirrors (or by biconvex lenses made of good optical glass), can be used to power solar stills, solar water heaters, solar cookers, solar pumps, and solar furnaces.

In the ceiling was an oval of optical glass that should be perfectly transparent to the laser's frequency.

Throughout the eighteenth century there was much clearing up of general ideas about matter and motion, much mathematical advance, a systematic development of the use of optical glass in microscope and telescope, a renewed energy in classificatory natural history, a great revival of anatomical science.

It was, Congreve saw, optical glass designed to magnify the contents.

A 30-power scope was a bit too much optical glass for a range of a hundred yards but it had variable power so I dropped it to a magnification of six which was as low as it would go.

The lens, instead of being ordinary optical glass, was a very dark purple, almost black.

The lens, instead of being ordinary optical glass, as a very dark purple, almost black.

Even the plastic frames of his spectacles had warped into his face and bubbled up in crusts of brittle blisters there, while their lenses lay upon his cheeks where first they'd melted, then solidified into tears of optical glass.

Crawling back to his lookout point, Tommy extended the tubular shades to hood both lenses of his binocs, knowing that a flash of sunlight on polished optical glass would instantly betray his location to the Condor.

Even so, she almost threw me by being so perfect, until I found a fairly large piece of optical glass on the downstairs rug, like glasses had been broken.