# The relation between frequency and wavelength relationship

### How are frequency and wavelength related?

They are all related by one important equation: Any electromagnetic wave's frequency multiplied by its wavelength equals the speed of light. Frequency (f). They are all related by one important equation: Any electromagnetic wave's frequency multiplied by its wavelength equals the speed of light. FREQUENCY OF. It states the mathematical relationship between the speed (v) of a wave and its wavelength (λ) and frequency (f). Using the symbols v, λ, and f, the equation can .

## How does energy relate to wavelength and frequency?

The relationship between frequency and wavelength is covered in any physics textbook as you can read in the well expressed answer of John Rennie. I can maybe add something about the interpretation of the equation.

Interpretation of the equation in which is expressed that the wave velocity equals the frequency multiplied by the wavelength [ in common wave propagation theory in physics ]. Take for example sound: With the travelling wave equation: This equation must be interpreted in the following way: The speed of sound — hence also the speed with which sound energy is transported — is a material constant and it therefore only depends on a number of properties of that medium.

And the only way to change that speed is to change the properties of the medium. Once the speed of sound in a medium is determined the above mentioned equation expresses the relation between the sound frequency and the wavelength. The two have an inverse relationship.

Given the frequency of the wave, the wavelength is equal to the speed of sound in the medium divided by the frequency. Radio waves are just another form of "light", i. Let's say we have a radio with a dial that is only marked in MHz. This is a measurement of frequency and we note that 1 MHz is the same as 1 million hertz the M in MHz stands for " mega ", which means million.

We are told of a radio broadcast we want to hear but we are only given the wavelength of the station and not the frequency.

The wavelength we are given is 3. We know the speed of light and we know the wavelength so it's now an easy matter to plug these numbers into the equation and find the frequency of the radio station: This gives us a frequency of 92 MHz, which is found in the FM range of most domestic radios.

Wavelength frequency and energy

Visible Light The wavelengths of visible light are measured in nanometres, nm billionths of a metre but the equation works just the same. When we look at a light source the colours we see are dictated by the frequency of the light. These frequencies are very high by everyday standards.

### Relationship between frequency and wavelength - Physics Stack Exchange

Have a look around the room and find something that's the colour red. How many times are the tiny crests of the light waves coming from that red object passing through the front of your eyes every second? In other words, what is the frequency of red light? Well, we know the speed of light and can take an average figure for the wavelength of red light.

Let's say it's nm, that is: We now have everything we need to work out the frequency: