By Pauling L.
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Additional info for A New Crystal for Wave-Length Measurements of Soft X-Rays
I (t) and f (t): f (t) =S i (t). e. the fact that it does not depend on time. This directly implies that the total energy of the system is conserved. e. with the observable in the scattering experiment, it is clear that the S-operator yields all the information about the quantum system under study. Of course, such a statement has its backup in the well-known quantum-mechanical postulate, which states that no experiment could possibly offer more information than is already contained in the total state vector (t) of the system.
Of course, such a statement has its backup in the well-known quantum-mechanical postulate, which states that no experiment could possibly offer more information than is already contained in the total state vector (t) of the system. From the S-operator, we obtain the S-matrix elements, whose square of the absolute value | f |S| i |2 is directly proportional to the detectable quantities, such as the differential cross section for the probability of the transition i −→ f from the initial (i ) to the final ( f ) state of Copyright 2004 IOP Publishing Ltd The key features of quantum systems and the Kato conditions 27 the system6 .
In this ingenious experiment, which initiated the appearance of the Rutherford planetary classical model of an atom as a predecessor of the quantum Bohr atomic model , the distance from the target to the detector (scintilloscope) was only 8 cm, whereas the whole complex comprising a source of α-particles and the fluorescent screen on which the scintillations were seen with impact of the scattered particles, was put in a box of dimensions 16 cm× 9 cm. e. readily achievable in an ordinary laboratory, do secure the essential condition of clearly distinguishing from one another the two pure situations before and after the collision.
A New Crystal for Wave-Length Measurements of Soft X-Rays by Pauling L.