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  2. Kirchhoff's circuit laws - Wikipedia

    en.wikipedia.org/wiki/Kirchhoff's_circuit_laws

    A matrix version of Kirchhoff's current law is the basis of most circuit simulation software, such as SPICE. The current law is used with Ohm's law to perform nodal analysis. The current law is applicable to any lumped network irrespective of the nature of the network; whether unilateral or bilateral, active or passive, linear or non-linear.

  3. List of quantum-mechanical systems with analytical solutions

    en.wikipedia.org/wiki/List_of_quantum-mechanical...

    The rectangular potential barrier; The triangular potential; The quadratic potentials The quantum harmonic oscillator; The quantum harmonic oscillator with an applied uniform field [1] The Inverse square root potential [2] The periodic potential The particle in a lattice; The particle in a lattice of finite length [3] The Pöschl–Teller potential

  4. Laws of thermodynamics - Wikipedia

    en.wikipedia.org/wiki/Laws_of_thermodynamics

    The first law of thermodynamics is a version of the law of conservation of energy, adapted for thermodynamic processes. In general, the conservation law states that the total energy of an isolated system is constant; energy can be transformed from one form to another, but can be neither created nor destroyed.

  5. Coulomb's law - Wikipedia

    en.wikipedia.org/wiki/Coulomb's_law

    Coulomb's inverse-square law, or simply Coulomb's law, is an experimental law [1] of physics that calculates the amount of force between two electrically charged particles at rest. This electric force is conventionally called the electrostatic force or Coulomb force . [ 2 ]

  6. Pre-existing duty rule - Wikipedia

    en.wikipedia.org/wiki/Pre-existing_duty_rule

    The pre-existing duty rule is an aspect of consideration within the law of contract. Originating in England the concept of consideration has been adopted by other jurisdictions, including the US. In essence, this rule declares that performance of a pre-existing duty does not amount to good consideration to support a valid contract; but there ...

  7. Copenhagen interpretation - Wikipedia

    en.wikipedia.org/wiki/Copenhagen_interpretation

    For example, Heisenberg emphasized a sharp "cut" between the observer (or the instrument) and the system being observed, [40]: 133 while Bohr offered an interpretation that is independent of a subjective observer or measurement or collapse, which relies on an "irreversible" or effectively irreversible process, which could take place within the ...

  8. Presentence investigation report - Wikipedia

    en.wikipedia.org/wiki/Presentence_investigation...

    The defendant interview is the pivotal point around which the presentence investigation turns. Often, the format is a structured interview during which a standard worksheet is completed. The worksheet follows the format of the presentence report and provides space for recording data about the offense and the offender's characteristics and history.

  9. Georg Ohm - Wikipedia

    en.wikipedia.org/wiki/Georg_Ohm

    Georg Simon Ohm (/ oʊ m /; [1] German: [ˈɡeːɔʁk ˈʔoːm]; [2] [3] 16 March 1789 – 6 July 1854) was a German mathematician and physicist.As a school teacher, Ohm began his research with the new electrochemical cell, invented by Italian scientist Alessandro Volta.