The British Journal of Photography, No. 613, Vol. XIX, February 2, 1872

The British Journal of Photography, No. 613, Vol. XIX, February 2, 1872

The British Journal of Photography, No. 613, Vol. XIX, February 2, 1872Herr Schultz-Sellack has recently called attention...
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The British Journal of Photography, No. 613, Vol. XIX, February 2, 1872

The British Journal of Photography, No. 613, Vol. XIX, February 2, 1872

$19.99 $9.99

The British Journal of Photography, No. 613, Vol. XIX, February 2, 1872

$19.99 $9.99
Author: Various
Format: eBook
Language: English

The British Journal of Photography, No. 613, Vol. XIX, February 2, 1872

Herr Schultz-Sellack has recently called attention to a remarkable agreement in certain properties between chemically-clean glass surfaces and photographic films coated with tannin or albumen. The particular property in which they appear to agree is thisthat an albumenised or tannined surface, when breathed upon, takes the moisture evenly and loses it gradually by evaporation, just like a clean glass plate. This wonderful discovery (!) is announced in Poggendorfs Annalen, and a notice of it appears in the last Journal of the Chemical Society. If Herr Schultz-Sellack had endeavoured to make himself acquainted with the literature of photography he would scarcely have taken the trouble to publish the statement of a fact well known to all who have much experience in dry-plate work. A film protected by albumen, tannin, or any other substance capable of absorbing moisture, resembles a perfectly-clean glass plate in the mode of condensation of moisture and the manner in which an aqueous film disappears from the surface: but this property of a somewhat hygroscopic surface is one which might be easily anticipated and has long been observed. ......Buy Now (To Read More)

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Ebook Number: 58708
Author: Various
Release Date: Jan 17, 2019
Format: eBook
Language: English

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