# DeBroglie: Wave Characteristics of Matter

How to calculate wavelength from mass with the de Broglie relation - Real Chemistry

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## Key Questions

Louis de Broglie extended the notion of wave motion from light to other particles, such as electrons. It is possible to calculate a de Broglie wavelength for anything, including an elephant!

#### Explanation:

The formula is $\lambda = \frac{h}{p}$ where $h$ is Planck's constant, $6.63 \times {10}^{-} 34$ ${m}^{2} k g {s}^{-} 1$, and $p$ is the momentum ($p = m v$, mass times velocity).

If you do the calculation, you will find out that the de Broglie wavelength for big objects like an elephant or a tennis ball is immeasurably tiny. It is only for very tiny objects like electrons that the concept really has much significance.

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