ABSTRACT.In polarimetry, it is important to characterize the polarization properties of the instrument itself to disentangle real astrophysical signals from instrumental effects. This article deals ...
ALUMINIUM generally is covered with an oxide layer which gives excellent protection against corrosion. Preston and Bircumshaw 1 and other workers, using the electron diffraction method, showed that ...
THE formation of boehmite on the surface of anodized aluminium by immersion in boiling water has been investigated by Hart 1. In particular, studying ammonium borate anodic films on aluminium, he ...
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