# 1 pm de Broglie wavelength? What's pm?

• I
• alv
In summary, the de Broglie wavelength is a concept in quantum mechanics that describes the wavelength of a moving particle, calculated using the formula λ = h/mv. It helped establish the wave-particle duality of matter and led to the development of quantum mechanics. "pm" in "1 pm de Broglie wavelength" stands for "picometer," a unit of length used to measure particles in the nanoscale range. Some real-world applications include electron microscopy, surface science, and quantum technology development.
alv
I'm reading about delayed-choice experiments http://arxiv.org/pdf/1407.2930.pdf and in this sentence "In modern interferometric experiments, the wave nature of molecules of approximately 7000 atomic mass units and 1 pm de Broglie wavelength has been demonstrated" I can't figure out or find out what the pm stands for. Please explain :)

picometer(pm) means 10^-12 m

## 1. What is the de Broglie wavelength?

The de Broglie wavelength is a concept in quantum mechanics that describes the wavelength of a particle, such as an electron or photon, that is in motion. It is named after French physicist Louis de Broglie.

## 2. How is the de Broglie wavelength calculated?

The de Broglie wavelength is calculated using the formula: λ = h/mv, where λ is the wavelength, h is Planck's constant, m is the mass of the particle, and v is its velocity.

## 3. What is the significance of the de Broglie wavelength?

The de Broglie wavelength is significant because it helped to establish the wave-particle duality of matter, showing that particles can also exhibit wave-like behavior. It also led to the development of quantum mechanics and our understanding of the microscopic world.

## 4. What does "pm" mean in "1 pm de Broglie wavelength"?

In this context, "pm" stands for "picometer," which is a unit of length equal to 10^-12 meters. It is commonly used to measure the wavelength of particles in the nanoscale range.

## 5. What are some real-world applications of the de Broglie wavelength?

The de Broglie wavelength has many applications in various fields, including electron microscopy, surface science, and particle accelerators. It also plays a crucial role in the development of technologies such as electron microscopes and quantum computers.

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