X-Nico

unusual facts about Kirchhoff's diffraction formula


Kirchhoff's diffraction formula

If all the terms in f(x', y) can be neglected except for the terms in x and y, we have the Fraunhofer diffraction equation.


Asymptotic gain model

Labels show the currents in the various branches as found using a combination of Ohm's law and Kirchhoff's laws.

Kirchhoff's circuit laws

Widely used in electrical engineering, they are also called Kirchhoff's rules or simply Kirchhoff's laws (see also Kirchhoff's laws for other meanings of that term).

Kirchhoff's theorem

Cayley's formula follows from Kirchhoff's theorem as a special case, since every vector with 1 in one place, −1 in another place, and 0 elsewhere is an eigenvector of the Laplacian matrix of the complete graph, with the corresponding eigenvalue being n.

It is a generalization of Cayley's formula which provides the number of spanning trees in a complete graph.

Modified nodal analysis

The MNA uses the element's Branch Constitutive Equations or BCE, i.e., their voltage - current characteristic and the Kirchhoff's circuit laws.

Theodor Aufrecht

With Kirchhoff, he collaborated in the publication of Die umbrischen Denkmäler (Umbrian memorials, 1849–51).

Thermal equilibrium

In this situation, Kirchhoff's law of equality of radiative emissivity and absorptivity and the Helmholtz reciprocity principle are in play.


see also