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Already in 1913, Kelsen had identified the need for a legal theoretic framework to support the idea of the Rechtsstaat. [5]Adolf Julius Merkl [de; pt] was a student of Kelsen's who made important contributions starting in 1918 in the area of hierarchy of norms that would help underpin some of Kelsen's ideas on norms and how they fit into his pure theory of law.
Kelsen used this word to denote the basic norm, order, or rule that forms an underlying basis for a legal system. The theory is based on a need to find a point of origin for all law, on which basic law and the constitution can gain their legitimacy (akin to the concept of first principles). This basic norm, however, is often described as ...
Abraham, R.; Marsden, J. E. (2008). Foundations of Mechanics: A Mathematical Exposition of Classical Mechanics with an Introduction to the Qualitative Theory of Dynamical Systems (2nd ed.).
"High school physics textbooks" (PDF). Reports on high school physics. American Institute of Physics; Zitzewitz, Paul W. (2005). Physics: principles and problems. New York: Glencoe/McGraw-Hill. ISBN 978-0078458132
Hans Kelsen (/ ˈ k ɛ l s ən /; German: [ˈhans ˈkɛlsən]; October 11, 1881 – April 19, 1973) was an Austrian jurist, legal philosopher and political philosopher.He was the principal architect of the 1920 Austrian Constitution, which with amendments is still in operation.
Classical mechanics is the branch of physics used to describe the motion of macroscopic objects. [1] It is the most familiar of the theories of physics. The concepts it covers, such as mass, acceleration, and force, are commonly used and known. [2] The subject is based upon a three-dimensional Euclidean space with fixed axes, called a frame of ...
In the fundamental branches of modern physics, namely general relativity and its widely applicable subset special relativity, as well as relativistic quantum mechanics and relativistic quantum field theory, the Lorentz transformation is the transformation rule under which all four-vectors and tensors containing physical quantities transform from one frame of reference to another.
All of these developments were phenomenological and challenged the theoretical physics of the time. Bohr and Sommerfeld went on to modify classical mechanics in an attempt to deduce the Bohr model from first principles. They proposed that, of all closed classical orbits traced by a mechanical system in its phase space, only the ones that ...