Permittivity (epsilon) change via temperature + optics effect?

  • #1
ndvcxk123
47
3
TL;DR Summary
Experiments: freeze binoculars view refraction change, + degassed water under high heat vs. near frozen water refraction change.
I got this from chatgpt:
refrangle.JPG

It says "not simple and straightforward", but can we assume proportional ? So is there a visible alteration in Snell angle ? Also, for applied physics databases, what would be a pubmed equivalent, hosting all titles and synopses ? In physics the articles seem to be fragmented between different databases ?
Thx.
 
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  • #2
ChatGPT is designed to make up a plausible-sounding answer. Sometimes it is even correct, but you can't count on it.

If you would clearly post your question here, real people can take a shot at answering it.
 
  • #3
Vanadium 50 said:
If you would clearly post your question here
What, you don't understand this very clear thread start? What in the world is WRONG with you? o0)
 
  • #4
Upon further review, this thread is closed. OP is advised that they can start a new thread with their question if they do it without using an AI chatbot's "help", and make the thread start understandable.
 

FAQ: Permittivity (epsilon) change via temperature + optics effect?

What is permittivity and why is it important in optics?

Permittivity, often denoted by the symbol ε (epsilon), is a measure of how an electric field interacts with a dielectric material. It quantifies the ability of a material to polarize in response to an electric field, which affects the material's optical properties, including refractive index and light propagation. Understanding permittivity is crucial in optics as it influences phenomena such as reflection, refraction, and transmission of light through materials.

How does temperature affect the permittivity of materials?

Temperature can significantly influence the permittivity of materials due to changes in molecular motion and polarization mechanisms. As temperature increases, the thermal agitation of molecules can reduce the density of polarization, often leading to a decrease in permittivity for many dielectric materials. However, this behavior can vary depending on the specific material and its molecular structure.

What is the relationship between permittivity and the refractive index?

The refractive index (n) of a material is related to its permittivity (ε) and permeability (μ) by the equation n = √(ε/μ). In most non-magnetic materials, the permeability is approximately equal to that of free space (μ₀), allowing the relationship to be simplified to n ≈ √ε. Consequently, changes in permittivity due to temperature or other factors will directly affect the refractive index, which in turn influences how light propagates through the material.

Can the optical effects of permittivity changes be observed experimentally?

Yes, the optical effects of permittivity changes can be observed experimentally through various techniques such as refractometry, interferometry, and spectroscopy. By measuring how the refractive index changes with temperature or other conditions, researchers can infer the corresponding changes in permittivity. These experimental observations are crucial for applications in optics, telecommunications, and material science.

What practical applications are affected by permittivity changes due to temperature?

Permittivity changes due to temperature can impact several practical applications, including the design of optical devices such as lenses, waveguides, and sensors. For instance, in telecommunications, variations in permittivity can affect signal transmission in fiber optics, leading to potential losses or distortions. Additionally, temperature-dependent permittivity is critical in the development of materials for capacitors and other electronic components where stable performance across varying temperatures is essential.

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