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单词 optical glass
例句 optical glass
The valuable things were books and records, surgical instruments and optical glass and such things that a practical working burglar wouldn’t look at twice. Cannery Row 1945-01-01T00:00:00Z
This method also does away with the expensive optical glass cover. Can Start-Ups Significantly Lower the Cost of Gene Sequencing? 2022-10-12T04:00:00Z
The cloudlike forms of “Kumo” are etched by laser into large blocks of optical glass, placed here in front of black backdrops that both set off and reflect the wispy images. Review | Asia shapes two art shows at the AU Museum 2018-04-25T04:00:00Z
In his book, he recalls doing nearly 30 jobs, including underwater filmmaker, optical glass fitter, bar owner, and in-country mechanic for the Royal New Zealand Air Force. In Mekong Delta backwaters, Vietnam vets find peace in a town that war destroyed 2017-05-07T04:00:00Z
Below it, a Noh stage with a platform of translucent optical glass appears to float over pale cypress legs that are jointed using traditional Japanese carpentry. The Veteran Photographer Making Stunning New Buildings 2017-04-03T04:00:00Z
The annealing process is therefore carried out in a manner differing essentially from that in use for any other variety of flat glass and nearly resembling that used for optical glass. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 1 "Gichtel, Johann" to "Glory" 2012-01-11T03:00:20.463Z
The lack of optical instruments thus occasioned was at first a source of grave national peril, since optical glass provides, as it were, eyes for both Navy and Army. The Woman's Part A Record of Munitions Work 2011-12-31T03:00:15.627Z
After three days he worked with common electricity, trying glass, heavy optical glass, quartz, Iceland spar, all without effect, as on former trials. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 2 "Fairbanks, Erastus" to "Fens" 2011-06-19T02:00:16.580Z
They came upon many metallurgical and technical devices of the utmost value, alloys and dyes, distilling, tinctures and essences, optical glass; but the two chief ends they sought, they sought in vain. A Short History of the World 2011-03-04T03:01:03.147Z
Kao figured out how to transmit light over long distances in optical glass fibers. World Changing Ideas: December's Scientific American 2011-01-05T22:18:46.567Z
The recent large increase in the number of varieties of glass has been chiefly due to developments in the manufacture of optical glass. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 1 "Gichtel, Johann" to "Glory" 2012-01-11T03:00:20.463Z
Before 1914, the optical glass industry of Europe was largely in the hands of Germany and Austria, and the outbreak of hostilities meant the total closing of that market to the Allies. The Woman's Part A Record of Munitions Work 2011-12-31T03:00:15.627Z
After fusing a panful of coloured glass, it was sampled by taking pinches out with tongs; when perfectly combined it was left to cool in the pan, as with modern optical glass. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 1 "Edwardes" to "Ehrenbreitstein"
Glass manufacturers seem to experience unusual difficulties in their attempts to form large discs of optical glass pure enough and uniform enough to be suitable for telescopes. The Story of the Heavens
The windows are made of optical glass similar to that used in the largest telescopes. The Skylark of Space
The next and most important forward step in the progress of optical glass manufacture was initiated by Ernst Abbe and carried out jointly by him and O. Schott at Jena in Germany. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 1 "Gichtel, Johann" to "Glory" 2012-01-11T03:00:20.463Z
In addition to optical glass there are still other branches of science that could not go on without glass in its various forms. The Story of Glass
Ordinary glass, even ordinary optical glass, would not answer the purpose at all. The Reminiscences of an Astronomer
These were cast by Mantois, of Paris, whose superiority to the American manufacturers of optical glass is recognized. Notable Events of the Nineteenth Century Great Deeds of Men and Nations and the Progress of the World
The existing form of nature's fabric is the optical glass, and all the activities of spirits are only an endless play of colors of that simple divine ray. Philosophical Letters of Frederich Schiller
While such minute and gradual variations are harmless for most optical purposes, sudden variations which generally take the form of striae or veins are fatal defects in all optical glass. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 1 "Gichtel, Johann" to "Glory" 2012-01-11T03:00:20.463Z
They also made optical glass; drilled and tapped in the shipyards; renewed electric wires and fittings, wound armatures; lacquered guards for lamps and radiator fronts; repaired junction and section boxes, fire control instruments, automatic searchlights. A Straight Deal or The Ancient Grudge
Very perfectly annealed optical glass is now, however, readily obtainable. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 1 "Gichtel, Johann" to "Glory" 2012-01-11T03:00:20.463Z
I. Optical Glass.—As regards both mode of production and essential properties optical glass differs widely from all other varieties. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 1 "Gichtel, Johann" to "Glory" 2012-01-11T03:00:20.463Z
Nevertheless, disks of optical glass, both crown and flint, have been produced up to 39 in. in diameter. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 1 "Gichtel, Johann" to "Glory" 2012-01-11T03:00:20.463Z
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