## Electromagnetic radiation

can be described as periodically changing transportation of

## energy

through

## space

. The length of one

## period

is known under the term

## wavelength

. The time of the oscillation necessary for completion of one period-length is defined by the term

## frequency

; it has the unit of 1/seconds. Since the time of an object traveling a certain amount of length through space, is determined by its

## speed

, the conversion of wavelength to frequency is likewise dependent on the speed. This leads to the

## inverse

dependence of

## wavelength

and

## frequency

.

The interactive Graph on this page allows for

## conversion

of wavelength to frequency (top) and the visualization of the

## electromagnetic wave

in space and time.

Because of the

## particle nature

, electromagnetic radiation can also be expressed in terms of

## energy (eV)

, as multiple of the

## Planck`s constant h

.

Another representation of frequency and wavelength is to be found in the expression

## Bandwidth

. An

## electromagnetic signal

often consists of a bundle of different

## frequencies components

. The information of the spectral representation is given by the difference between highest and lowest frequency (or wavelength). Owing to the

## inverse relationship

of these magnitudes, the magnitude of

## bandwidth

shows similarly no linear proportionality between

## bandwidth

in

## wavelength

and

## frequency

.

The interactive Graph on this page (bottom) allows for conversion of bandwidth from wavelength to frequency and the visualization of the

## distribution

function.