delta function

For example, a point mass is represented by a delta function defined in 3-dimensional space.

The charge density is not actually concentrated in a delta function.

Also a point moment acting on a beam can be described by delta functions.

Then there's a peak similar to a delta function.

This tells you what a field delta function looks like in a path-integral.

Point moments can thus be represented by the derivative of the delta function.

A spike of that intensity in the time domain is a delta function.

It may be scattered at the delta function potential.

For example, the Dirac delta function is a singular measure.

The delta function only makes sense as a mathematical object when it appears inside an integral.

We give an example of how the delta function is expedient in quantum mechanics.

For example it is not meaningful to square the Dirac delta function.

In such cases, will not be a simple delta function, which will reduce the performance of the method.

The Dirac delta function can model an electromagnetic charge of a point in space.

Point loads can be modeled with help of the Dirac delta function.

This solution assumes that the delta function source is located at the origin.

By construction, P for a coherent state is simply a delta function:

The limit of then becomes the Dirac delta function.

The first factor, the delta function, fixes the gauge.

The delta function potential barrier is the limiting case of the model considered there for very high and narrow barriers.

Note that the Dirac delta function potential attains this limit.

Thus, the power spectral density function is a set of Dirac delta functions.

The Dirac delta function is homogeneous of degree 1.

This can be interpreted as a Dirac delta function that is created immediately after the pulse.

The delta function in this incidence algebra similarly corresponds to the formal power series 1.