By Raymond A. Serway
Available and versatile, sleek PHYSICS, 3rd version has been in particular designed to supply easy, transparent, and mathematically easy motives of actual innovations and theories of contemporary physics. The authors make clear and express help for those theories via a vast variety of present functions and examples-attempting to reply to questions comparable to: What holds molecules jointly? How do electrons tunnel via limitations? How do electrons go through solids? How can currents persist indefinitely in superconductors? To pique scholar curiosity, short sketches of the ancient improvement of twentieth-century physics corresponding to anecdotes and quotations from key figures in addition to fascinating pictures of famous scientists and unique equipment are built-in all through. The 3rd variation has been largely revised to explain tough suggestions and punctiliously up-to-date to incorporate quickly constructing technical functions in quantum physics. to counterpoint the analytical strategies within the textual content and to assist scholars visualize summary strategies, the recent variation additionally positive factors unfastened on-line entry to QMTools, new platform-independent simulation software program created by way of co-author, Curt Moyer, and constructed with help from the nationwide technological know-how origin. Icons within the textual content point out the issues designed to be used with the software program.
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Extra resources for Modern Physics
The length of the stick, L, as measured by the Earth observer is shorter than Lp by the factor (1 Ϫ v 2/c 2)1/2. Note that length contraction is a symmetric effect: If the stick were at rest on Earth, an observer in a frame moving past the earth at speed v would also measure its length to be shorter by the same factor (1 Ϫ v 2/c 2)1/2. As we mentioned earlier, one of the basic tenets of relativity is that all inertial frames are equivalent for analyzing an experiment. Let us return to the example of the decaying muons moving at speeds close to the speed of light to see an example of this.
11. In the muon’s reference frame, there is no time dilation, but the distance of travel is observed to be shorter when measured from this frame. Likewise, in the Earth observer’s reference frame, there is time dilation, but the distance of travel is measured to be the proper height of the mountain. Thus, when calculations on the muon are performed in both frames, one sees the effect of “offsetting penalties,” and the outcome of the experiment is the same! Copyright 2005 Thomson Learning, Inc. All Rights Reserved.
11. R. S. Shankland, “The Michelson – Morley Experiment,” Sci. , November 1964, p. 107. 12. R. Skinner, Relativity for Scientists and Engineers, New York, Dover Publications, 1982. 13. N. Mermin, Space and Time in Special Relativity, Prospect Heights, Illinois, Waveland Press, 1989. QUESTIONS 1. What two measurements will two observers in relative motion always agree on? 2. 5c. What shape will the observer see as the spaceship moves past? 3. An astronaut moves away from Earth at a speed close to the speed of light.