What is the Height of EM Radiation

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Discussion Overview

The discussion revolves around the relationship between wavelength, frequency, and amplitude in the context of electromagnetic (EM) radiation. Participants explore whether there is a mathematical equation connecting these quantities and how they may vary across different types of waves.

Discussion Character

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

Main Points Raised

  • One participant questions the relationship between wavelength, frequency, and amplitude, seeking an equation and clarification on variability across different wave types.
  • Another participant asserts that amplitude, frequency, and wavelength are independent quantities, although frequency and wavelength are related through wave speed.
  • A third participant notes that amplitude is often represented graphically as displacement, but emphasizes that amplitude and displacement are fundamentally different concepts with different units.
  • A fourth participant challenges the common depiction of light "wiggling from side to side," suggesting that this representation leads to misconceptions about electromagnetic waves.

Areas of Agreement / Disagreement

Participants express differing views on the relationship between amplitude, wavelength, and frequency, with no consensus reached on whether an equation exists or how these quantities interact.

Contextual Notes

There are unresolved questions regarding the definitions and interpretations of amplitude, displacement, and their graphical representations. The discussion also highlights potential misconceptions about the nature of electromagnetic waves.

dbmorpher
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Hello,
I have always wondered, what the relation of wavelength and frequency to the amplitude is.
Is there an equation? Does it vary with different types of waves? Can it change?
 
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dbmorpher said:
what the relation of wavelength and frequency to the amplitude is.

There is none. They are independent quantities. (Frequency and wavelength are of course related by the wave speed.)
 
Amplitude is often graphically expressed as displacement (or height re: thread title). This is just a graphical convenience, obviously in reality amplitude and displacement are different things as they possesses different units.

Claude.
 
Light does not actually 'wiggle from side to side'. That picture is responsible for a lot of misconceptions about EM.
 

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