The sciopticon manual, explaining lantern projection in general, and the sciopticon apparatus in paricular (1877)

Record Details:

Title:
The sciopticon manual, explaining lantern projection in general, and the sciopticon apparatus in paricular
Date:
1877
Publisher:
Philadelphia, J. A. Moore
Volume:
The sciopticon manual, explaining lantern projection in general, and the sciopticon apparatus in paricular
Leaf #:
000160
Language:
English
Collection:
Books
Format:
Books
Contributor:
University of California Libraries
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
Date Added:
July 19, 2022
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SCIOPTICON MANUAL. 151 CHAPTEE XII. Sit* fim* fiflftt INTRODUCTION. THE Lime Light in an improved form having been introduced into the Sciopticon, it becomes-expedient to append to the Sciopticon Manual a description of the apparatus and directions for its use. FLAME ILLUMINATION. We have in the Sciopticon oil lamp arrangement the largest amount of ordinary flame illumination that can, to advantage, be brought to bear upon the screen through the objective lens, and as bright as air with its twenty per cent, of oxygen will make it. Brightening the two flames by an inner supply of oxygen gas, after the manner of the Bude light, heats the wick tubes to an unsafe degree, and consumes too much oxygen as compared with the efficiency of the illumination. Some solid matter, of which quick-lime seems to be the best and cheapest for the purpose, is more luminous in an intense heat, than simply the particles of burn- ing carbon floating off in flame. VARIETIES IN LIME LIGHT. Every lime light alike has lime and a jet of oxygen gas; but a variety arises from the different conditions of the hydrogen employed. With alcohol vapor, it is commonly called the oxy-calcium; with house gas led