Page "hobbies" Paragraph 727
from
Brown Corpus
Three different wavelengths of ultraviolet radiation are selected by the variable filters placed in front of the three mercury xenon lights which serve as the ultraviolet sources.
These wavelengths are reflected in sequence through the specimen by the rotating mirror ; ;
the specimen is magnified by the microscope.
Instead of the observer's eye the image orthicon in the TV camera does the `` looking ''.
The microscope and orthicon are both selected to operate well into the ultraviolet spectrum, which means that all lenses must be quartz.
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