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Stark Law is a set of United States federal laws that prohibit physician self-referral, specifically a referral by a physician of a Medicare or Medicaid patient to an entity for the provision of designated health services ("DHS") if the physician (or an immediate family member) has a financial relationship with that entity.
The Stark effect is the shifting and splitting of spectral lines of atoms and molecules due to the presence of an external electric field. It is the electric-field analogue of the Zeeman effect , where a spectral line is split into several components due to the presence of the magnetic field .
Stark spectroscopy (sometimes known as electroabsorption/emission spectroscopy) is a form of spectroscopy based on the Stark effect.In brief, this technique makes use of the Stark effect (or electrochromism) either to reveal information about the physiochemical or physical properties of a sample using a well-characterized electric field or to reveal information about an electric field using a ...
The law was first proposed in 1817 by Theodor Grotthuss and in 1842, independently, by John William Draper. [5] This is considered to be one of the two basic laws of photochemistry. The second law is the Stark–Einstein law, which says that primary chemical or physical reactions occur with each photon absorbed. [5]
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Pure Theory of Law is a book by jurist and legal theorist Hans Kelsen, first published in German in 1934 as Reine Rechtslehre, and in 1960 in a much revised and expanded edition. The latter was translated into English in 1967 as Pure Theory of Law. [1] The title is the name of his general theory of law, Reine Rechtslehre.
[1] [2] [3] A more fundamental statement was later labelled as the zeroth law after the first three laws had been established. The zeroth law of thermodynamics defines thermal equilibrium and forms a basis for the definition of temperature: if two systems are each in thermal equilibrium with a third system, then they are in thermal equilibrium ...
Stark seemed impressed by relativity and Einstein's earlier work when he quoted "the principle of relativity formulated by H. A. Lorentz and A. Einstein" and "Planck's relationship M 0 = E 0 /c 2" in his 1907 paper [2] in Physikalische Zeitschrift, where he used the equation e 0 = m 0 c 2 to calculate an "elementary quantum of energy", i.e. the ...