Created By : Rina Nayak

Reviewed By : Phani Ponnapalli

Last Updated : Apr 27, 2023

This de Broglie wavelength calculator will aid in the description of matter's wave-particle duality. Simply provide the respective inputs and click on the calculate button to find out the parameter of your choice in no time.

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What is meant by De Broglie Wavelength?

The De Broglie Wavelength is the wavelength at which an object's momentum and mass are related. The wavelength of de Broglie and the object force are inversely related. The de Broglie wavelength equation depicts the relationship between the particle's nature and the body's nature.

De Broglie's Formula

A beam of particles of a certain mass can act as a matter wave, according to de Broglie. Its wavelength is proportional to the particle's mass and velocity:

λ = h/mv

  • Where m is the mass of the particle
  • v is the particle's velocity, and
  • h is the plank's constant i.e. h = 6.6261*10-34 Js

How to Use De Broglie Wavelength Calculator?

The following steps will let you know how to use the De Broglie Wavelength Calculator. They are as such

  • In the input area, enter the photon energy and x for the unspecified amount.
  • To have the wavelengths, click the "Calculate x" button.
  • Finally, the output field will show the undetermined value calculated using the De Broglie wavelengths.
  • Tap on the calculate button and the calculator does everything for you in no time.

De Broglie Wavelength Examples

Question 1: Determine the wavelength of an electron travelling at 2*106ms-1?



The electron's velocity is v = 2*1066 ms-1

m =9.1*10-31 Kg is the mass of an electron.

h = 6.62607015*1034 Js, Planck's Constant

= h/mv gives us the de-Broglie wavelength.

= 6.62607015×10-34 /(2×106)(9.1×10-31)

λ = 0.364×109m

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FAQ’s on De Broglie Wavelength Calculator

1. Which has a faster speed for the same de Broglie wavelength: the electron or the proton?

The particle's de-Broglie wavelength is the same. As a result, their momentum will be balanced. The product of mass and velocity is momentum. As a result, the speed of a given particle is inversely proportional to its mass. A proton with a larger mass will travel slower, while an electron with a smaller mass will travel faster.

2. How do you determine a wave function's de Broglie wavelength?

The de Broglie wavelength is equal to h/p, and the de Broglie relations are equal to h/p and f = E/h, respectively.

3. At 100 eV, what is the de Broglie wavelength of an electron in?

At 100 eV, what is the de Broglie wavelength of an electron? (b) 1.6 1017 J = K = 100 eV. = h/p = h/2mK = 0.123 nm, according to de Broglie.

4. What is the de-Broglie wavelength in terms of heat?

The average de Broglie wavelength of the gas particles in an ideal gas at the specified temperature is comparable to the thermal de Broglie wavelength.