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  2. Quantum superposition - Wikipedia

    en.wikipedia.org/wiki/Quantum_superposition

    Quantum superposition is a fundamental principle of quantum mechanics that states that linear combinations of solutions to the Schrödinger equation are also solutions of the Schrödinger equation. This follows from the fact that the Schrödinger equation is a linear differential equation in time and position.

  3. Relative dating - Wikipedia

    en.wikipedia.org/wiki/Relative_dating

    The law of included fragments is a method of relative dating in geology. Essentially, this law states that clasts in a rock are older than the rock itself. [ 6 ] One example of this is a xenolith , which is a fragment of country rock that fell into passing magma as a result of stoping .

  4. Law of superposition - Wikipedia

    en.wikipedia.org/wiki/Law_of_superposition

    The law of superposition is an axiom that forms one of the bases of the sciences of geology, archaeology, and other fields pertaining to geological stratigraphy.In its plainest form, it states that in undeformed stratigraphic sequences, the oldest strata will lie at the bottom of the sequence, while newer material stacks upon the surface to form new deposits over time.

  5. Nicolas Steno - Wikipedia

    en.wikipedia.org/wiki/Nicolas_Steno

    the law of superposition: "At the time when a given stratum was being formed, there was beneath it another substance which prevented the further descent of the comminuted matter and so at the time when the lowest stratum was being formed either another solid substance was beneath it, or if some fluid existed there, then it was not only of a ...

  6. Geologic time scale - Wikipedia

    en.wikipedia.org/wiki/Geologic_time_scale

    The law of superposition that states that in undeformed stratigraphic sequences the oldest strata will lie at the bottom of the sequence, while newer material stacks upon the surface. [8] [9] [10] [7] In practice, this means a younger rock will lie on top of an older rock unless there is evidence to suggest otherwise.

  7. Basis set superposition error - Wikipedia

    en.wikipedia.org/wiki/Basis_set_superposition_error

    This physical chemistry -related article is a stub. You can help Wikipedia by expanding it.

  8. Uncertainty principle - Wikipedia

    en.wikipedia.org/wiki/Uncertainty_principle

    where = is the reduced Planck constant.. The quintessentially quantum mechanical uncertainty principle comes in many forms other than position–momentum. The energy–time relationship is widely used to relate quantum state lifetime to measured energy widths but its formal derivation is fraught with confusing issues about the nature of time.

  9. Coulomb's law - Wikipedia

    en.wikipedia.org/wiki/Coulomb's_law

    However, Gauss's law can be proven from Coulomb's law if it is assumed, in addition, that the electric field obeys the superposition principle. The superposition principle states that the resulting field is the vector sum of fields generated by each particle (or the integral, if the charges are distributed smoothly in space).