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Type of Document	Dissertation
Author	Langmuir, Robert V.
URN	etd-05132003-122821
Persistent URL	http://resolver.caltech.edu/CaltechETD:etd-05132003-122821
Title	A regulated high voltage supply for the electron microscope
Degree	PhD
Option	Physics
Advisory Committee	Advisor Name Title unknown Committee Member
Keywords	none
Date of Defense	1943-01-01
Availability	unrestricted
Abstract NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. The errors of magnetic electron lenses are discussed, particularly with respect to the ultimate resolving power of the electron microscope. A regulated high voltage power supply using frequency modulated carrier system has been constructed which contributes considerably to the operation of the electron microscope at high magnifications. The errors of the magnetic lenses due to poor lining up and centering have been reduced considerably by operation at lower magnifications. A resolving power of about 150 [Angstroms] has been obtained. Some pictures of clays, calcite and rouge are presented.
Files	Filename       Size       Approximate Download Time (Hours:Minutes:Seconds)     28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access    Langmuir_rv_1943.pdf 18.03 Mb 01:23:29 00:42:56 00:37:34 00:18:47 00:01:36