| 释义 |
Joly|ˈdʒɒlɪ|
The name of John Joly (1857–1933), Irish physicist, used attrib. and in the possessive to denote apparatus and processes devised by him, as Joly('s) method, process Photogr., a process of colour photography using a screen (Joly screen) ruled with a repeating sequence of adjacent orange, blue-green, and blue lines placed in front of the plate in the camera and a screen similarly ruled with red, green, and blue lines placed in contact with the transparency when it is being projected; Joly's steam calorimeter, a device for determining the specific heat of a substance by measuring the weight of steam that condenses on a known mass of the substance in raising its temperature to that of the steam.
1894T. Preston Theory of Heat v. 236 (heading) Joly's steam calorimeter. 1902Encycl. Brit. XXXI. 686/1 (heading) Joly's process. 1906E. J. Wall tr. König's Natural-Color Photogr. 20 In 1904 Professor Wood improved his process and applied it to positives obtained by the Joly process... Gratings were ruled with three sets of lines in bands corresponding to the width of the red, green, and blue lines of the Joly screen. 1909S. E. Bottomley Photogr. in Princ. & Pract. xxvi. 207 At the time the Joly process was put on the market, a suitable panchromatic emulsion was not obtainable, and to this cause alone must be ascribed its non-success. 1938W. J. Sparrow Heat vii. 139 Joly's steam calorimeter may be used (a) to find the specific heat of a solid.., (b) to determine the specific heat of a gas at constant volume. 1940Chambers's Techn. Dict. 469/1 Joly screen, a colour mosaic consisting of ruled lines. 1958H. Baines Sci. of Photogr. xx. 246 Fig. 6 illustrates the reproduction of a red colour by the Joly and similar methods... The Joly experiments showed the possibility of colour photography using a mosaic screen. 1963A. E. E. McKenzie Second Course Heat ii. 32 Joly's steam calorimeter measures heat in terms of the mass of steam condensed on a body. |