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REMARKS ON THE POINTOLITE AS A LIGHT‐SOURCE IN MICROSCOPY
Author(s) -
Baker John R.
Publication year - 1955
Publication title -
journal of the royal microscopical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0368-3974
DOI - 10.1111/j.1365-2818.1955.tb00413.x
Subject(s) - condenser (optics) , optics , aperture (computer memory) , light source , microscopy , microscope , ball (mathematics) , bulb , computer graphics (images) , materials science , computer science , physics , mathematics , geometry , biology , acoustics , horticulture
SYNOPSIS The Pointolite is a good source of intense illumination for microscopy, provided that a sufficiently powerful bull's‐eye is used to ensure that the image of the tungsten ball covers the aperture of the substage condenser. The bull's‐eye should be of as short a focal length as the size of the glass bulb will allow. A new lamp to carry the Pointolite is described. Careful instructions are given for centring, focusing, and aiming the light.