By V.L. Ginzburg
In approximately technological know-how, Myself and Others, Vitaly Lazarevich Ginzburg, co-recipient of the 2003 Nobel Prize in Physics and Editor of the evaluate magazine Physics-Uspekhi, presents an perception into glossy physics, the lives and works of different sought after physicists he has identified, and perception into his personal lifestyles and perspectives on physics and past.
Divided into 3 components, the ebook starts off with a overview of the most important difficulties in modern physics, astrophysics, and cosmology, analyzing their ancient improvement and why they pose this type of problem to present day physicists and for society. half One additionally contains information of a few of Professor Ginzburg's paintings, together with superconductivity and superfluidity. half encompasses numerous articles at the lives and works of numerous admired physicists, together with the writer. The 3rd half is a set of articles that supply a private view of the writer, describing his own perspectives and memories on various wider themes.
Taken jointly, this number of articles creates an relaxing evaluate of physics, its philosophy, and key avid gamers in its smooth improvement within the twentieth Century. definitely, it is going to be an stress-free learn for pro physicists and non-scientists alike.
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Extra info for About Science, Myself and Others
They can be distinguished by the star motion near the nucleus. If we are dealing with a black hole, then the attracting mass is obviously concentrated within a radius smaller than rg and, even for Mbh ∼ 109 M , this radius is rg ∼ 3 × 1014 cm, i. e. negligible on galactic scales (recall that the astronomical unit, i. e. 5 × 1013 cm). Hence, if it were possible to trace the star motion Copyright © 2005 IOP Publishing Ltd. 32 Problems of physics and astrophysics (thirty years later) near the nucleus up to distances comparable with rg , everything would immediately become clear.
34 Problems of physics and astrophysics (thirty years later) to assume that this is neutral hydrogen, a strongly ionized (and therefore weakly luminous) gas, planets, weakly luminous stars—brown dwarfs, neutron stars or, ﬁnally, black holes. All these assumptions have, however, been disproved by various types of observations. For example, neutral hydrogen is ﬁxed by the radio-astronomy method, hot gas is registered by X-ray emission, neutron stars and black holes are also observed, though with diﬃculty.
8) with ε > 0 (this means that Λ > 0), the gravitational mass density is −2εv /c2 , i. e. it is negative (‘antigravity’). In other words, the negative pressure, therefore, acts against the usual gravitational attraction (formally, in GR there are no any ‘gravitational masses’ and ‘forces’, so using the classical language, I put these term in quotes). Now this is clear but obviously it was not then widely understood among physicists and cosmologists. In any case, I did not understand it and supported the introduction of the Λ-term only from the previously mentioned formal considerations.
About Science, Myself and Others by V.L. Ginzburg