๐”– Bobbio Scriptorium
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Laser interferometer for fluid pressure measurement

โœ Scribed by J.N. Butters

Publisher
Elsevier Science
Year
1969
Weight
299 KB
Volume
1
Category
Article
ISSN
0374-3926

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โœฆ Synopsis

Note. The influence of lens abberations are not observed, because the interference pattern is small (approximately 3mm diameter)

Influence on the spatial frequency caused by using a sphere as the Fourier transform plane, cannot be observed for the same reason.

CONCLU~ON

The method described is very simple and requires very little optical equipment. Pinholes up to 100~m can be drilled without particular care. Once a series of pinhole plates is made measurements become very easy and repeatable.

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