CALOTYPE

Definition: CALOTYPE

CALOTYPE

Noun

1. A method of taking photographic pictures, on paper sensitized with iodide of silver; -- also called Talbotype, from the inventor, Mr. Fox. Talbot.

Source: Webster's Revised Unabridged Dictionary (1913)

Etymology: Calotype \Cal"o*type\, noun. [from Greek expression kalo`s beautiful ty`pos type.]. (Websters 1913)

"CALOTYPE" is a common misspelling or typo for: collotype.

Context	Synonyms within Context (source: adapted from Roget's Thesaurus).
Painting	Photograph, color photograph, black-and-white photograph, holograph, heliograph; daguerreotype, talbotype, calotype, heliotype; negative, positive; print, glossy print, matte print; enlargement, reduction, life-size print; instant photo, Polaroid photo.
Source: adapted from Roget's Thesaurus.

zh-cn:卡罗法

Calotype was an early photographic process introduced in 1841 by William Fox Talbot, using paper sheets covered with silver chloride. The image was fixed in strong salt solution - potassium iodide of hypo.

It may be briefly described as the application of silver iodide to a paper support. Carefully selected paper was brushed over with a solution of silver nitrate (100 grains to the ounce of distilled water), and dried by the fire. It was then dipped into a solution of potassium iodide (500 grains being dissolved in a pint of water), where it was allowed to stay two or three minutes until silver iodide was formed. In this state the iodide is scarcely sensitive to light, but is sensitized by brushing "gallo-nitrate of silver" over the surface to which the silver nitrate had been first applied. This "gallonitrate" is merely a mixture, consisting of 100 grains of silver nitrate dissolved in 2 oz. of water, to which is added one-sixth of its volume of acetic acid, and immediately before applying to the paper an equal bulk of a saturated solution of gallic acid in water. The prepared surface is then ready for exposure in the camera, and, after a short insolation, develops itself in the dark, or the development may be hastened by a fresh application of the "gallo-nitrate of silver." The picture is then fixed by washing it in clean water and drying slightly in blotting paper, after which it is treated with a solution of potassium bromide, and again washed and dried. Here there is no mention made of hyposulphite of soda as a fixing agent, that having been first used by John Herschel in February 1840.

This process was the first to use a negative image that can be reused to produce several positive prints. When the Collodion process was introduced in 1851, the calotype became obsolete.

Crosswords: CALOTYPE

English words defined with "CALOTYPE": Talbotype. (references)

Domain	Title
Books	Era of the French Calotype (reference) Paper and Light: The Calotype in France and Great Britain, 1839-1870 (reference) Plain Directions for Obtaining Photographic Pictures by the Calotype & Energiatype. Also upon Albumenized Paper & Glass (reference) The Art of French Calotype, With a Critical Dictionary of Photographers, 1845-1870 (reference) The calotype patent lawsuit of Talbot v. Laroche, 1854 (reference) (more book examples)
Source: compiled by the editor from various references; see credits.

The following statistics estimate the number of searches per day across the major English-language search engines as identified by various trade publications. Hyperlinks lead to commercial use of the expression at Amazon.com.

Language		Translations for "calotype"; alternative meanings/domain in parentheses.
Pig Latin		alotypecay.(various references)
Source: compiled by the editor from various translation references.

Derivations
	Words beginning with "CALOTYPE": calotypes. (additional references)
Source: compiled by the editor, based on several corpora (additional references).

Words rhyming with "CALOTYPE" (pronounced 'Cal"o*type'): Albertype, Ambrotype, Antitype, Archetype, Aristotype, Artotype, Authotype, Autotype, Cerotype, Chemitype, Chromatype, Chromotype, Chrysotype, Collodiotype, Collotype, Cyanotype, Diaphanotype, Duotype, Ectype, Electro-stereotype, Ferrotype, Graphotype, heliotype, Hemiorthotype, Homotype, Hyalotype, Ivorytype, Linotype, logotype, Melanotype, Melotype, Mesotype, Ootype, Opalotype, Palaeotype, Paleotype, Photo-electrotype, Photomezzotype, Phototype, Platinotype, Porotype, Prototype, Stannotype, Telotype, Thermotype, Tintype, Voltatype, Woodbury-type. (additional references)

Scrabble® Enable2K-Verified Anagrams
	Words within the letters "a-c-e-l-o-p-t-y"
	-1 letter: acolyte, ectypal, polecat.
	-2 letters: acetyl, caplet, capote, cotype, locate, pelota, peyotl, placet, teapoy, toecap, yclept.
	-3 letters: aptly, atopy, clapt, cleat, clept, coaly, coapt, copal, eclat, epact, lacey, leapt, lepta, lycea, octal, octyl, palet, patly, peaty, petal, place, plate, platy, pleat, tepal, tepoy, typal.
	-4 letters: acyl, alec, aloe, alto, atop, calo, cape, capo, cate, celt, clap, clay, clop, clot, cloy, coal, coat, cola, cole, colt, coly, cope, copy, cote, lace, lacy, late, leap, lept, loca, lope, lota, olea, opal, pace, pact, pale, paly, pate, paty, peal, peat, pelt, plat, play, plea, plot, ploy, poet, pole, poly, tace, taco, tael, talc, tale, tape, teal, tela, tepa, toea, tola, tole, tope, type, typo, yelp.
	-5 letters: ace, act, ale, alp, alt, ape, apt, ate, aye, cap, cat, cay, cel, cep, col, cop, cot, coy, eat, eta, lac, lap, lat, lay, lea, let, ley, lop, lot, lye, oat, oca, ole, ope, opt, pac, pal, pat, pay, pea, pec, pet, ply, pol, pot, pya, pye, tae, tao, tap, tea, tel, toe, top, toy, tye, yap, yea, yep, yet.
	Words containing the letters "a-c-e-l-o-p-t-y"
	+1 letter: calotypes.
	+2 letters: eucalyptol, poetically, polychaete.
	+3 letters: acropetally, amylopectin, autocephaly, corporately, counterplay, ectopically, eucalyptole, eucalyptols, exculpatory, explicatory, genotypical, hypocentral, lycanthrope, myelopathic, polychaetes, pterodactyl.
	+4 letters: amylopectins, cephalometry, chalcopyrite, complacently, conceptually, corporeality, counterplays, despotically, entropically, eucalyptoles, hypothetical, lycanthropes, opalescently, operatically, phenotypical, phonetically, pinealectomy, polycythemia, proteoglycan, pterodactyls, pyrocatechol.
	+5 letters: campylobacter, chalcopyrites, comparatively, complementary, complicatedly, complimentary, conceptuality, cooperatively, copyrightable, counterplayer, deprecatorily, endolymphatic, exceptionably, exceptionally, genotypically, geotropically, lycanthropies, mythopoetical, orthoepically, peptidoglycan, perissodactyl, phytochemical, pneumatolytic, polycarbonate, polycythemias, polydactylies, precopulatory, proleptically, prophetically, proteoglycans, provocatively, pyrocatechols, pyrotechnical, stereotypical.
Source: compiled by the editor from various references; see credits. SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro.