Optical projection: a treatise on the use of the lantern in exhibition and scientific demonstration (1906)

Record Details:

Title:
Optical projection: a treatise on the use of the lantern in exhibition and scientific demonstration
Date:
1906
Author:
Wright, Lewis, 1838-1905
Publisher:
London, New York, Bombay : Longmans, Green and Co.
Volume:
Optical projection: a treatise on the use of the lantern in exhibition and scientific demonstration
Leaf #:
000447
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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432 OPTICAL PROJECTION Fin. 243. -Vertical Pattern Projection Microscope introduction of a long girder bar extending the whole length of the instrument, and greatly increasing the rigidity. A centring sub-stage has also been added. Sir David Salomons has designed a modified form of the instrument which can be used either horizontally or vertically ; a large mir- ror between the two halves of the condenser reflects the beam up- wards, and a sort of double prism above the objective re-directs it towards the screen. The arrangement is very handy for show- ing pond life or other objects which require to be kept horizontal. Both mirror and prisms can be readily with- drawn, and the instru- ment then becomes an ordinary girder pattern projection microscope (fig. 243). Science lanterns. — The large growth of technical schools and poly- technics has led to a demand for lanterns for scientific demonstrations at moderate prices, and several patterns of these are now on the market. Professor H. Jackson, of King's Col- lege, has designed such a lantern, which is sold complete for 101. 10s. This lantern