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De Broglie Wavelength Formula

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Wavelength is the distance between two consecutive peaks or troughs of a light wave, which is a measure of the length of a photon in a periodic wave pattern. Check FAQs

λ = \frac{[hP]}{p}

λ - Wavelength?p - Photon's Momentum?[hP] - Planck constant?

De Broglie Wavelength Example

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With units

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Here is how the De Broglie Wavelength equation looks like with Values.

Here is how the De Broglie Wavelength equation looks like with Units.

Here is how the De Broglie Wavelength equation looks like.

2.1095 = \frac{6.6E-34}{3.1E-25}

2.1095nm = \frac{6.6E-34}{3.1E-25kg*m/s}

2.1095 = \frac{6.6E-34}{3.1E-25}

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De Broglie Wavelength Solution

Follow our step by step solution on how to calculate De Broglie Wavelength?

FIRST Step Consider the formula

λ = \frac{[hP]}{p}

Next Step Substitute values of Variables

∴

λ = \frac{[hP]}{3.1E-25kg*m/s}

Next Step Substitute values of Constants

∴

λ = \frac{6.6E-34}{3.1E-25kg*m/s}

Next Step Prepare to Evaluate

∴

λ = \frac{6.6E-34}{3.1E-25}

Next Step Evaluate

∴

λ = 2.10954156001273E-09m

Next Step Convert to Output's Unit

∴

λ = 2.10954156001273nm

LAST Step Rounding Answer

∴

λ = 2.1095nm

De Broglie Wavelength Formula Elements

Variables

Constants

Wavelength

Wavelength is the distance between two consecutive peaks or troughs of a light wave, which is a measure of the length of a photon in a periodic wave pattern.

Symbol: λ

Measurement: WavelengthUnit: nm

Note: Value can be positive or negative.

Formulas to find Wavelength

Photon's Momentum

Photon's Momentum is the product of the photon's mass and velocity, a measure of the total motion of a photon, which is a fundamental concept in quantum mechanics and physics.

Symbol: p

Measurement: MomentumUnit: kg*m/s

Note: Value can be positive or negative.

Formulas to find Photon's Momentum

Planck constant

Planck constant is a fundamental universal constant that defines the quantum nature of energy and relates the energy of a photon to its frequency.

Symbol: [hP]

Value: 6.626070040E-34

Other formulas in Photoelectric Effect category

Go Photon's Energy using Frequency

K max = [hP] \cdot v photon

Go Photon's Energy using Wavelength

E = \frac{[hP] \cdot [c]}{λ}

Go Photon's Momentum using Wavelength

p = \frac{[hP]}{λ}

Go Photon's Momentum using Energy

p = \frac{E}{[c]}

How to Evaluate De Broglie Wavelength?

De Broglie Wavelength evaluator uses Wavelength = [hP]/Photon's Momentum to evaluate the Wavelength, De Broglie Wavelength formula is defined as a measure of the wavelength of a particle, typically in a quantum mechanical system, which is related to the momentum of the particle and is a fundamental concept in understanding the behavior of particles at the atomic and subatomic level. Wavelength is denoted by λ symbol.

How to evaluate De Broglie Wavelength using this online evaluator? To use this online evaluator for De Broglie Wavelength, enter Photon's Momentum (p) and hit the calculate button.

FAQs on De Broglie Wavelength

What is the formula to find De Broglie Wavelength?

The formula of De Broglie Wavelength is expressed as Wavelength = [hP]/Photon's Momentum. Here is an example- 2.1E+10 = [hP]/3.141E-25.

How to calculate De Broglie Wavelength?

With Photon's Momentum (p) we can find De Broglie Wavelength using the formula - Wavelength = [hP]/Photon's Momentum. This formula also uses Planck constant .

Can the De Broglie Wavelength be negative?

Yes, the De Broglie Wavelength, measured in Wavelength can be negative.

Which unit is used to measure De Broglie Wavelength?

De Broglie Wavelength is usually measured using the Nanometer[nm] for Wavelength. Meter[nm], Megameter[nm], Kilometer[nm] are the few other units in which De Broglie Wavelength can be measured.

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