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s, usually nearly invisible to the unaided eye, produced by the interposition between the camera and the object of a screen. The name alludes to the fact that this process was the first that was practically successful in reproducing the half tones of the photograph.

erture of a lens, consisting of a number of thin pieces fastened to a ring. It is used in cameras and microscopes.

A camera for making chronophotographs.

A kind of portable camera.

uice, and poisonous acrid fruit somewhat resembling an apple. Bastard manchineel, a tree (Cameraria latifolia) of the East Indies, having similar poisonous properties. Lindley.

making an indicator diagram for high- speed engines. It consists of a light-tight box or camera having at one end a small convex mirror which reflects a beam of light on to the ground glass or photographic plate at the other end. The mirror is pivoted so that it can be moved in one direction by a small plunger operate…

A camera for obtaining a circular panoramic view of the horizon. The photographic plate is placed horizontally with a vertical lens above. A mirror of peculiar shape reflects light from the entire horizon to the lens, by means of which it is focused upon the plate.

Of, pertaining to, or like, a panorama. Panoramic camera. See under Camera.

A pantascopic camera.

Viewing all; taking a view of the whole. See under Camera.

A phototheodolite, or a camera designed for use in photogrammetry. --Pho`to*gram*met"ric (#), Pho`to*gram*met"ric*al (#), a.

; obtained by photography; used ib photography; as a photographic picture; a photographic camera. -- Pho`to*graph"ic*al*ly, adv. Photographic printing, the process of obtaining pictures, as on chemically prepared paper, from photographic negatives, by exposure to light.

A device, consisting essentially of an electric arc and a camera, by which a series of photographs of the variations of the arc due to sound waves are obtained for reproduction by means of a selenium cell and a telephone.

A nephoscope registering by photography, commonly consisting of a pair of cameras used simultaneously.

An arrangement of two photographic cameras, the plates of which may be brought into exactly the same plane, used in surveying and map making. From the differences between two pictures taken at the same moment, measurements in all dimensions of the region may be obtained.

ges in a darkened room, usually called scioptic ball. Scioptic ball (Opt.), the lens of a camera obscura mounted in a wooden ball which fits a socket in a window shutter so as to be readily turned, like the eye, to different parts of the landscape.

An instantaneous photograph made, usually with a hand camera, without formal posing of, and often without the foreknowledge of, the subject.

The unicameral national assembly of Bulgaria, elected for a term of five years by universal suffrage of adult males.

photographic picture caused by exposing it for too long a time to the sun's light in the camera; burning; excessive insolation.

To injure by too long exposure to the light of the sun in the camera; to burn.