Why Does Light Have Different Energy Levels? Explained

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Discussion Overview

The discussion centers on the energy levels of light and how they relate to electromagnetic waves, particularly in the context of light passing through different media. Participants explore the underlying principles, including Planck's equation, and seek logical explanations for observed phenomena.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant notes that while all electromagnetic waves travel at the same speed, they possess different energy levels, referencing Planck's equation but seeking a more intuitive explanation.
  • Another participant suggests that the energy of radiation can be thought of as related to an "internal vibration," with frequency determining energy.
  • A question is raised about the behavior of light energy when it passes through different media, requesting a detailed explanation.
  • One participant asserts that when light passes through a passive medium, its frequency and photon energy remain constant, while its wavelength changes.
  • Another participant claims that the energy of light rays does not change when transitioning between media, although the speed and wavelength of different frequency rays adjust according to the medium.

Areas of Agreement / Disagreement

Participants express differing views on how light's energy behaves when passing through different media, with some asserting that energy remains constant while others emphasize changes in wavelength and speed. The discussion remains unresolved regarding the nuances of these claims.

Contextual Notes

There are limitations in the discussion regarding the assumptions made about the behavior of light in different media, particularly concerning the definitions of energy, frequency, and wavelength, which are not fully explored.

benzun_1999
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Though all EM waves travels in the same speed each one has a diiferent energy. can anyone tell me why. i know it is because of planks equation. but i am looking for some logical explanation.
 
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Naively, you can think of it as an "internal vibration", the speed of which (its frequency) determines the energy of the radiation.
 
yes by the way what happens to the energy of the light when it passes through a different medium pls explain to me in detail.
 
When light passes through a passive medium its frequency (and thus the energy of a photon) remains the same but its wavelength changes.
 
Energy of light rays does not change as it change mediums. the speed of different frequence light rays are different in different mediums and thus the wavelength of different frequency rays take the appropriate value
 
thanks for the help
 

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