By Dr Jean-Philippe Uzan, Dr Bénédicte Leclercq (auth.)
ISBN-10: 0387734546
ISBN-13: 9780387734545
ISBN-10: 0387740813
ISBN-13: 9780387740812
Constants, corresponding to the gravitational consistent and the rate of sunshine, are found in the entire legislation of physics. contemporary observations have solid doubt on one among them. Does this suggest that the constitution of physics will collapse? Are we seeing the sunrise of a systematic revolution? This booklet is written within the kind of an enquiry into the significance of a potential version in basic constants. Jean-Philippe Uzan and Bénédicte Leclercq ask such questions as: what's a relentless? What function do constants play within the legislation of physics? How will we confirm that they're certainly constants?
This hugely instructive survey of physics, from the laboratory to the depths of area, explores the trails of gravitation, basic relativity and new theories akin to that of superstrings. it really is entire and coherent, and is going past the topic of constants to give an explanation for and talk about many principles in physics, encountering alongside the best way, for instance, such interesting info because the discovery of a ordinary nuclear reactor at Oklo in Gabon.
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Extra info for The Natural Laws of the Universe: Understanding Fundamental Constants
Example text
Also, the Michelson±Morley experiments showed that the speed of light does not depend on the frame of reference in which it is measured. At last, c became a true constant, proper to both light and electromagnetism, and valid for all inertial frames. It seemed, however, that the constant nature of the speed of light contradicted one of the rules of Galilean mechanics. According to Galileo, when two observers in relative, rectilinear and uniform motion observe the same phenomenon, the velocities measured by one of them are equal to the velocities measured by the other, to which is added to the relative speed of the two frames of reference.
The second indispensable constant in electromagnetism is e, the elementary charge. It represents, as an absolute value, the smallest possible electric charge carried by a free particle: for example, the electron carries the charge ±e, and the proton the charge +e. Under quantum mechanics, the discipline which describes the microscopic, we find a constant of paramount importance: Planck's constant, h. We shall also recount the history of h. Other useful constants include the electron rest mass me and the proton rest mass mp.
Having securely married space to time, Einstein then proceeded to link matter to them. The container and the contents then became one. 7 The Tower of Pisa experiment. All objects fall with the same acceleration, such that they hit the ground at the same time if dropped from the same height at the same speed. expresses the capacity of space-time to bend in the presence of matter, whatever that matter might be. G thus regained its universal significance, earning its place in category C. GENERAL RELATIVITY: FROM SUCCESS TO SUCCESS Since its formulation, the theory of general relativity has been confirmed on many occasions, two of which will be described here.
The Natural Laws of the Universe: Understanding Fundamental Constants by Dr Jean-Philippe Uzan, Dr Bénédicte Leclercq (auth.)
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