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"Reardon, Arthur C"
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Metallurgy for the non-metallurgist
The completely revised Second Edition of Metallurgy for the Non-Metallurgist provides a solid understanding of the basic principles and current practices of metallurgy. This major new edition is for anyone who uses, makes, buys or tests metal products. For both beginners and others seeking a basic refresher, the new Second Edition of the popular Metallurgy for the Non-Metallurgist gives an all-new modern view on the basic principles and practices of metallurgy. This new edition is extensively updated with broader coverage of topics, new and improved illustrations, and more explanation of basic concepts. Why are cast irons so suitable for casting? Do some nonferrous alloys respond to heat treatment like steels? Why is corrosion so pernicious? These are questions that can be answered in this updated reference with many new illustrations, examples, descriptions of basic metallurgy. This new edition is a must-have ready reference on metallurgy!
eBook
Gravitational analysis of V541 Cygni, DI Herculis, and the Pioneer anomaly
Detailed analyses by independent research groups over several decades reveal a significant discrepancy between the observed rate of periastron advance in the detached eclipsing binary star systems DI Herculis and V541 Cygni and the values theoretically predicted from the combined classical and general relativistic effects. A modification to Newton’s gravitational theory is proposed in this investigation to account for these discrepancies, and is represented by
where
G
o
is a second gravitational constant. The two body problem is solved analytically in closed form, resulting in a retrograde contribution to the advance of periastron. Numerical values of
G
o
were calculated from an analysis of the available data for each of these binary star systems, resulting in a value of
G
o
=(1.5±0.3)×10
−27
m
2
kg
−1
s
−2
from the analysis of V541 Cygni, and
from an analysis of DI Herculis. The level of agreement between these values supports the assumption that the rotational axes of the stars in V541 Cygni are oriented perpendicular to the orbital plane, as opposed to the highly inclined orbits of the stars observed in DI Herculis. An independently determined value of
G
o
was calculated through an analysis of the Pioneer anomaly data, resulting in
G
o
=(3.00±0.37)×10
−27
m
2
kg
−1
s
−2
. Within a factor of two, this value of
G
o
agrees with the results obtained from DI Herculis and V541 Cygni. The proposed theory predicts the “turn on” of the Pioneer anomaly to occur at a heliocentric distance of 10.0 AU, in good agreement with observation.
Journal Article
