How Is the Planck Relation E=hf Derived?

In summary, the Planck relation is a fundamental equation in quantum mechanics that describes the relationship between the energy of a photon and its frequency. It was discovered by Max Planck in 1900 and marked a major breakthrough in the field of quantum mechanics. The equation is derived using a combination of theoretical and experimental methods and has several real-world applications in technology and science.
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PreposterousUniverse
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How do one derive the relation E=hf?
 
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PreposterousUniverse said:
How do one derive the relation E=hf?
If the link from my Google search does not answer your question, you should post it in your existing thread on the subject, rather than starting new threads on the same questions. Please post it here if needed:

https://www.physicsforums.com/threads/energy-of-an-electromagnetic-wave.1017351/

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FAQ: How Is the Planck Relation E=hf Derived?

1. What is the Planck relation?

The Planck relation, also known as the Planck-Einstein relation, is a fundamental equation in quantum mechanics that relates the energy of a photon to its frequency. It is expressed as E = hf, where E is energy, h is Planck's constant, and f is frequency.

2. Who discovered the Planck relation?

The Planck relation was discovered by German physicist Max Planck in 1900. He proposed it as a solution to the ultraviolet catastrophe, a problem in classical physics that could not explain the spectrum of blackbody radiation.

3. How is the Planck relation derived?

The Planck relation is derived using Planck's quantum hypothesis, which states that energy is quantized in discrete units. By assuming that the energy of a photon is proportional to its frequency, Planck was able to derive the relation E = hf. This was a groundbreaking discovery that laid the foundation for quantum mechanics.

4. What is the significance of the Planck relation?

The Planck relation is significant because it revolutionized our understanding of the behavior of light and matter at the atomic and subatomic level. It also led to the development of quantum mechanics, which has had a profound impact on various fields such as physics, chemistry, and engineering.

5. Can the Planck relation be applied to all forms of energy?

No, the Planck relation is specific to the energy of photons. It cannot be applied to other forms of energy such as kinetic or potential energy. However, it is a fundamental equation in quantum mechanics and is used to explain the behavior of electromagnetic radiation.

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