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A 7 7 VACUUM RESEARCH
ROOM G-E LABORATORY
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Using the X-Ray
in the Homo
Greater X-ray Service—
through Research
FoR years after the discovery of X-
rays it was evident that only inten-
sive research could unfold their real
possibilities.
Meanwhile, scientists of the General
Electric Company developed the process
of making wrought tungsten. This
proved ideal as the target in X-ray tubes
and its use for this purpose soon became
universal.
Then further research resulted in the
development of an X-ray tube of a radi-
cally new type—the Coolidge Tube—
with both electrodes of wrought tung-
sten and containing the highest attain-
able vacuum.
But the complication of high-vacuum
General Office
Schenectady, NY.
pumps made the new tube in large
quantities impossible. The answer to
this problem was the Langmuir Con-
densation Pump, utilizing mercury vapor
in its operation and almost automatic.
To meet the need for simple X-ray ap-
paratus during the war — the G-E Labo-
ratory developed the Self-Rectifying
Coolidge Tube, which made possible
portable outfits at the front. The latest
X-ray outfit of this type is so small, it
can be taken conveniently to the home
or to the bedside in the hospital.
Thus the Research Laboratory of the
General Electric Company continues to
serve, that progress in things electrical
may continue for the good of humanity.
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