Something called wavevector, k

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Discussion Overview

The discussion revolves around the concept of "wavevector, k," exploring its definition, implications, and applications in various contexts such as light propagation and crystallography.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant inquires about the nature of the wavevector, k, questioning whether it represents the direction of light propagation or has a different meaning.
  • Another participant provides a link to a Wikipedia article on wave vectors, suggesting it as a resource for further information.
  • A different participant explains that wavevectors are elements of K-space, which is derived from the Fourier transformation of a coordinate space, and relates this to crystallography.
  • It is noted that K-space is also referred to as momentum space, indicating a connection between wavevectors and momentum in physical contexts.

Areas of Agreement / Disagreement

Participants express varying levels of understanding and perspectives on the wavevector, with no consensus reached on its definition or implications.

Contextual Notes

Some assumptions about the relationship between wavevectors, light propagation, and their representation in K-space may not be fully articulated, leaving room for further exploration and clarification.

Alice Jin
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something called "wavevector, k"

Dear,

I have a question about something called "wavevector, k".
What is it? Is that the direction of propagation of light? or something else?
Please explain easily. Thank you in advance.
 
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Alice Jin said:
Dear,

I have a question about something called "wavevector, k".
What is it? Is that the direction of propagation of light? or something else?
Please explain easily. Thank you in advance.

You have some coordinate space. The Fourier transformation space of this coordinate space is K-space which elements are wave vectors. Exaple for this you have in crystalography. Crystal which you can put in you're hand is in real space. When you use some difraction method you will get some film. That film is K-space.
 


And K-space is momentum space.
 

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