# Do light waves have frequency and wavelength relationship

### How does energy relate to wavelength and frequency? | Socratic A wavelength is one cycle of a wave, and we measure it as the distance between any So when we talk about light traveling in waves, we can also talk about frequency, or the That means that longer wavelengths have a lower frequency. Each color of light we see has a particular frequency - Here, the key relationship is The equation that describes this wave motion is the same for all three types of speed of light and can take an average figure for the wavelength of red light. They are all related by one important equation: Any electromagnetic wave's We can use this relationship to figure out the wavelength or frequency of any.

## How does energy relate to wavelength and frequency?

Electromagnetic Radiation Electromagnetic radiation is a type of energy that is commonly known as light. Generally speaking, we say that light travels in waves, and all electromagnetic radiation travels at the same speed which is about 3. We call this the "speed of light"; nothing can move faster than the speed of light. A wavelength is one cycle of a wave, and we measure it as the distance between any two consecutive peaks of a wave. The peak is the highest point of the wave, and the trough is the lowest point of the wave. Frequency So when we talk about light traveling in waves, we can also talk about frequency, or the number of wavelengths that pass a certain point in a given length of time.

We usually measure this as the number of wavelength cycles that pass per second. The units for this measurement are Hertz hz. So, if the wavelength of a light wave is shorter, that means that the frequency will be higher because one cycle can pass in a shorter amount of time. This means that more cycles can pass by the set point in 1 second. Likewise, a light wave that has a longer wavelength will have a lower frequency because each cycle takes a longer time to complete. 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.

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. Have a look around the room and find something that's the colour red.

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