| 单词 |
heliotype |
| 释义 |
heliotype|ˈhiːlɪəʊtaɪp|
[f. helio- + Gr. τύπος impression, print, type.]
A picture obtained by printing from a film of gelatine which has been sensitized with bichromate of potash and exposed to light under a negative; also, the process by which such a picture is produced. Also attrib.
1870Echo 4 Nov., Art..presents its readers with four splendid heliotype pictures. 1874Abney Instr. Photogr. xlii. (1886) 297 In the heliotype process a film of gelatine is prepared on a glass plate, from which it is stripped when dry, and printed in the ordinary manner. Ibid. 303 The great secret of producing a good heliotype is to have first⁓rate rollers at command. 1883R. Haldane Workshop Receipts Ser. ii. 188/2 The most important of the many modifications of the collotype process is the ‘heliotype’ invented by Ernest Edwards.
So ˈheliotyped ppl. a., produced by the heliotype process; heliotypic |-ˈtɪpɪk| a., of or belonging to the heliotype process; ˈheliotypy |-taɪpɪ|, the heliotype process.
1883Fisheries Exhib. Catal. 327 Heliotyped Drawings. |
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