# A report onWavelength

Spatial period of a periodic wave—the distance over which the wave's shape repeats.

- Wavelength

## Dispersion relation

In the physical sciences and electrical engineering, dispersion relations describe the effect of dispersion on the properties of waves in a medium.

In the physical sciences and electrical engineering, dispersion relations describe the effect of dispersion on the properties of waves in a medium.

A dispersion relation relates the wavelength or wavenumber of a wave to its frequency.

## Wind wave

Water surface wave that occurs on the free surface of bodies of water.

Water surface wave that occurs on the free surface of bodies of water.

Wave length (distance from crest to crest in the direction of propagation)

## Hertz

Unit of frequency in the International System of Units (SI) and is defined as one cycle per second.

Unit of frequency in the International System of Units (SI) and is defined as one cycle per second.

(For historical reasons, the frequencies of light and higher frequency electromagnetic radiation are more commonly specified in terms of their wavelengths or photon energies: for a more detailed treatment of this and the above frequency ranges, see electromagnetic spectrum.)

## Matter wave

Example of wave–particle duality.

Example of wave–particle duality.

The de Broglie wavelength is the wavelength,

## Wave interference

Phenomenon in which two waves combine by adding their displacement together at every single point in space and time, to form a resultant wave of greater, lower, or the same amplitude.

Phenomenon in which two waves combine by adding their displacement together at every single point in space and time, to form a resultant wave of greater, lower, or the same amplitude.

The fringe spacing increases with increase in wavelength, and with decreasing angle

## Spectrum

Condition that is not limited to a specific set of values but can vary, without gaps, across a continuum.

Condition that is not limited to a specific set of values but can vary, without gaps, across a continuum.

Soon the term referred to a plot of light intensity or power as a function of frequency or wavelength, also known as a spectral density plot.

## Diffraction

Obstacle or opening.

Obstacle or opening.

The characteristic bending pattern is most pronounced when a wave from a coherent source (such as a laser) encounters a slit/aperture that is comparable in size to its wavelength, as shown in the inserted image.

## Molecular vibration

Periodic motion of the atoms of a molecule relative to each other, such that the center of mass of the molecule remains unchanged.

Periodic motion of the atoms of a molecule relative to each other, such that the center of mass of the molecule remains unchanged.

The typical vibrational frequencies range from less than 1013 Hz to approximately 1014 Hz, corresponding to wavenumbers of approximately 300 to 3000 cm−1 and wavelengths of approximately 30 to 3 µm.

## Dispersive prism

Optical prism that is used to disperse light, that is, to separate light into its spectral components .

Optical prism that is used to disperse light, that is, to separate light into its spectral components .

Different wavelengths (colors) of light will be deflected by the prism at different angles.