Definitions

from The Century Dictionary.

  • Not coated with silver: said in optics of a mirror in which the reflecting surface is that of the glass itself and not that of a layer of silver deposited upon the glass to increase the reflecting power.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective Not silvered.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

un- +‎ silvered

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Examples

  • The shroud lines-narrow bands of unsilvered plastic film-would have been completely invisible had they not been coated with fluorescent paint.

    The Wind from The Sun Clarke, Arthur C. 1962

  • Great care was taken to have the unsilvered spot exactly on a line with the trunnions and just half-way between them.

    The Scientific American Boy The Camp at Willow Clump Island A. Russell Bond

  • Another way of focusing the mirrors was to stand behind the instrument with the head close to the station mirror, shift the sun mirror until the entire station mirror was reflected in it, with the white patch squarely over the unsilvered spot; then still looking at the sun mirror, the station mirror was shifted until the reflection of the distant station was brought squarely in line with the unsilvered spot on the mirror.

    The Scientific American Boy The Camp at Willow Clump Island A. Russell Bond

  • Then Bill sighted through the unsilvered spot in the mirror and shifted the rod up and down until the tip end came squarely in line with the door of our straw hut, where Jack was seated, notebook in hand, to take down our message.

    The Scientific American Boy The Camp at Willow Clump Island A. Russell Bond

  • Light is always polarised when it is reflected from a plate of unsilvered glass, or from water, at a certain definite angle of fifty-six degrees for glass, fifty-two degrees for water, the angle being reckoned in each case from a perpendicular to the surface.

    The Wave Theory of Light Lord Kelvin 1909

  • These, while the sun remained visible, were to be made with an unsilvered diagonal eye-piece, which reflected but a small fraction of the sun's light, this fraction, being still further toned down by a dark glass.

    Fragments of science, V. 1-2 John Tyndall 1856

  • IIRC, the bulk price is about $150 per thousand foot, and about $500 per thousand foot with “silver tinning”. 30 pair armored ABAM is about $1.75/foot, but that’s unsilvered. gdn

    Another "High Quality" USHCN station « Climate Audit 2007

  • a small shadow spot made by the unsilvered peep hole.

    The Scientific American Boy The Camp at Willow Clump Island A. Russell Bond

  • The large _salon_ is separated from the lesser by an immense plate of unsilvered glass, which admits of the fireplaces in each room (they are

    The Idler in France Marguerite Blessington 1819

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