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A local conservation law is usually expressed mathematically as a continuity equation, a partial differential equation which gives a relation between the amount of the quantity and the "transport" of that quantity. It states that the amount of the conserved quantity at a point or within a volume can only change by the amount of the quantity ...
Continuity equations are a stronger, local form of conservation laws. For example, a weak version of the law of conservation of energy states that energy can neither be created nor destroyed—i.e., the total amount of energy in the universe is fixed. This statement does not rule out the possibility that a quantity of energy could disappear ...
The laws listed below meet the following criteria: (1) they were passed by the United States Congress, and (2) pertain to (a) the regulation of the interaction of humans and the natural environment, or (b) the conservation and/or management of natural or historic resources.
The global versions can be united into a single global conservation law: the conservation of the energy-momentum 4-vector. The local versions of energy and momentum conservation (at any point in space-time) can also be united, into the conservation of a quantity defined locally at the space-time point: the stress–energy tensor [ 11 ] : 592 ...
Law on Conservation and Environmental Care (Gesetz über Naturschutz und Landschaftspflege – Bundesnaturschutzgesetz – BNatSchG) Law on Protection for Environmental Harms due to Air Pollution, Noise, etc. (Gesetz zum Schutz vor schädlichen Umwelteinwirkungen durch Luftverunreinigungen, Geräusche, Erschütterungen und ähnliche Vorgänge ...
Environmental law is the collection of laws, regulations, agreements and common law that governs how humans interact with their environment. [2] This includes environmental regulations; laws governing management of natural resources, such as forests, minerals, or fisheries; and related topics such as environmental impact assessments.
The definition of the category of nature park is laid down in federal law (§ 27 of the BNatSchG). Details, especially with regard to the identification, investigation or recognition as a nature park vary in each state depending on the provisions of local conservation law.
This is an accepted version of this page This is the latest accepted revision, reviewed on 31 December 2024. Law of physics and chemistry This article is about the law of conservation of energy in physics. For sustainable energy resources, see Energy conservation. Part of a series on Continuum mechanics J = − D d φ d x {\displaystyle J=-D{\frac {d\varphi }{dx}}} Fick's laws of diffusion ...