By Michael Drieschner
This booklet provides a set of texts by way of the German physicist and thinker Carl Friedrich von Weizsäcker (1912-2007), to be used in seminars at the heritage, epistemology and constitution of physics. such a lot texts look in English for the 1st time. Weizsäcker turned recognized via his works in physics, mostly within the early improvement of nuclear physics. Later he could additionally turn into renowned as a thinker and analyst of up to date tradition. Texts comprise the unique guides of the “Weizsäcker-Bethe formulation” of nuclear lots and the “Bethe-Weizsäcker cycle,” and is the reason the resource of power within the sunlight; either have been constructed by means of Bethe while and independently of Weizsäcker. extra texts take care of Weizsäcker’s rationalization of the beginning of planets, his clarification of the “time arrow” in Statistical Mechanics and his analyses of Quantum Mechanics and the constitution of physics in general.
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Additional info for Carl Friedrich von Weizsäcker: Major Texts in Physics
This is precisely the vapour-pressure equation of the neutron liquid, which indicates the concentration of a neutron gas at equilibrium with its condensate. This condensate, however, which by its presence provides for the validity of Eq. 9), is the forming nuclei themselves. The question now is whether the presumptions made apply to the real nuclei. Exact saturation is the only doubtful assumption. 3 Third Part 25 its neighbouring elements, is merely raised by factor 10–100, which fits well with experience.
Thus the true orbit is, so to speak, a compromise solution: If the law of inertia were to act alone, the planet would hurry on in a straight line and remove itself ever further from the Sun; if the gravitational force were to act alone, it would fall straight into the Sun. In reality, its orbit bends constantly toward the Sun and yet never reaches the Sun. 34 3 The Formation of the Planetary System Along an elliptical orbit it repeatedly approaches the Sun in order to repeatedly distance itself from it.
Kant sets out from an observation. In addition to the zodiac, we also see a second distinct larger circle in the heavens: the Milky Way. It, too, we conceive as a plane in which we ourselves are located. Its white shimmer is the summated light of countless stars crowded together in this plane. Kant asks what this giant stellar system would look like from the outside, in which our Sun plays a role of even lesser significance than a planetoid in the planetary system. He believes that certain elliptically shaped nebulous spots in the sky are faraway Milky Way systems.