E = hf what sort of Energy is this?

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SUMMARY

The discussion centers on the relationship between energy represented by the equation E = hf and its relevance to the equation E² = (mc²)² + (pc)². Participants confirm that the energy (E) in E = hf pertains specifically to photons, which are massless particles. Thus, this energy is indeed applicable in the context of the energy-momentum relation expressed in E² = (mc²)² + (pc)², affirming that photons possess energy despite having no mass.

PREREQUISITES
  • Understanding of quantum mechanics principles, specifically Planck's equation.
  • Familiarity with the concept of massless particles, particularly photons.
  • Knowledge of Einstein's mass-energy equivalence (E = mc²).
  • Basic grasp of relativistic energy-momentum relations.
NEXT STEPS
  • Explore the implications of Planck's equation in quantum physics.
  • Study the properties and behavior of massless particles, focusing on photons.
  • Investigate the derivation and applications of the energy-momentum relation E² = (mc²)² + (pc)².
  • Learn about the role of energy in wave-particle duality.
USEFUL FOR

Students and educators in physics, particularly those studying quantum mechanics and relativity, as well as researchers interested in the properties of light and energy.

WWCY
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Homework Statement


Is this E - say of an electron - the very E in E2 = (mc2)2 + (pc)2?

If it isn't, what sort of Energy is this?

Help is greatly appreciated!

Homework Equations

The Attempt at a Solution

 
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This is the E of a photon, a massless particle. So yes:
WWCY said:
the very E in E2 = (mc2)2 + (pc)2?
 

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