Calculate the wavelength of a photon

A ground state H atom absorbs a photon of energy 2. As the atom relaxes, it emits two photons: one of wavelength nm to reach an intermediate level, and a second to reach the ground state.

Many, many problems in physics and chemistry require you to use an energy-to-wavelength calculator. Do you have an energy transition between two states and wonder what wavelength of light this corresponds to? Have you the energy of two waves that have undergone a constructive or destructive interaction and want to find the new wavelength? If so, you've found the right place in Omni's energy-to-wavelength calculator, which will help you learn how to calculate wavelength from energy for a photon or wave! The energy to wavelength formula relies upon two other equations: the wave speed equation and the Planck—Einstein relation.

Calculate the wavelength of a photon

Last Updated: January 12, Fact Checked. This article was co-authored by Meredith Juncker, PhD. Her studies are focused on proteins and neurodegenerative diseases. There are 7 references cited in this article, which can be found at the bottom of the page. This article has been fact-checked, ensuring the accuracy of any cited facts and confirming the authority of its sources. This article has been viewed 1,, times. Wavelength is the distance of 1 frequency wave peak to the other and is most commonly associated with the electromagnetic spectrum. If you know the speed and frequency of the wave, you can use the basic formula for wavelength. If you want to determine the wavelength of light given the specific energy of a photon, you would use the energy equation. Calculating wavelength is easy as long as you know the correct equation. This equation can also be used to determine the maximum wavelength of light necessary to ionize metals. Simply use the energy required for ionization and solve for the corresponding wavelength. Just plug in the wave's speed and frequency to solve for the wavelength.

Arben Oct 27, To calculate photon energy from wavelength: Make sure your wavelength is in meters.

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With this photon energy calculator, you can explore the relationship between the wavelength and frequency of the photon and its energy. Read the text below to find out how to calculate the energy of a photon and what is Planck's equation. The light seems to us to have a wavy character. It diffracts, interferes, and refracts. However, at a microscopic level, it is carried by a minuscule quantum of energy called the photon.

Calculate the wavelength of a photon

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Wavelength calculations often involve very large numbers, especially if you're working with light speed. A common mistake here is calculating a new frequency for the wave. Choose an expert and meet online. Enrique Ramirez Apr 14, By signing up you are agreeing to receive emails according to our privacy policy. Learn why people trust wikiHow. Congratulations, you have just found your photon's wavelength in meters. Reader Success Stories. If you found the right value for the wavelength, multiplying by the frequency should get you the wave speed you started with. Featured Articles How to. The energy of the nm photon was 1. Use the correct units. Support wikiHow Yes No.

The wavelength of photons tells us about their energy. So in this article, we will look at what is the wavelength of photons and how to find it. Let us begin.

Wavelength calculations often involve very large numbers, especially if you're working with light speed. Related Articles. Ente Jan 2, Eduardo G. If the frequency of a radio wave is 4. If you want to determine the wavelength of light given the specific energy of a photon, you would use the energy equation. Thanks to all authors for creating a page that has been read 1,, times. Prevent this by writing your numbers in scientific notation and double checking the significant digits. Calculator, Practice Problems, and Answers. In this case, v v v is actually equal to the speed of light, ,, meters per second , which we denote as c c c. This equation can also be used to determine the maximum wavelength of light necessary to ionize metals. I will need to come back many times to grasp more, but I'm pleased at my increased awareness. Divide the speed of light , equal to ,, meters per second, by the photon's energy. For example: What is the wavelength of a 70 Hertz sound wave traveling at meters per second? Thank you.