5 ms·

"And it turns out this happens because of a little thing called fresnel. [...] To account for this affect, you can use Fresnel [...] Certainly, PVC has a fresne

"And it turns out this happens because of a little thing called fresnel. [...] To account for this affect, you can use Fresnel [...] Certainly, PVC has a fresnel." It's called Fresnel coefficient [1] after the physicist Augustin-Jean Fresnel. "Fresnel" is not a noun. [1] https://en.wikipedia.org/wiki/Fresnel_equations https://en.wikipedia.org/wiki/Fresnel_equations [2] https://en.wikipedia.org/wiki/Augustin-Jean_Fresnel https://en.wikipedia.org/wiki/Augustin-Jean_Fresnel

loansindi 5y ago
> "Fresnel" is not a noun. It is in stage and film lighting [0], which made this headline confusing to read. [0] https://en.wikipedia.org/wiki/Fresnel_lantern https://en.wikipedia.org/wiki/Fresnel_lantern
edflsafoiewq 5y ago
Like "diffuse" and "specular", it's certainly used as a noun.
- oh_my_goodness 5y ago
  Each field can make up whatever jargon is convenient. If we were talking about optics, then 'diffuse' and 'specular' would be adjectives that describe reflections. Fresnel reflection tends to mean specular reflection. The author sounds sensible when he recommends that specular reflections be implemented using Fresnel's math. That is how specular reflections work outside the computer.
GavinMcG 5y ago
I have expertise neither in physics nor in theater. But I do want to chime in to suggest that any time you're about to make a categorical statement like "fresnel is not a noun" in response to someone using it that way, it's worth pausing. Regardless of your certainty, there's rarely a well-grounded reason to think your view is more correct than theirs. All language is contextual. Fields have jargon. And so many arguments on the internet arise when people from different contexts make unnecessarily strong statements insisting that their usage is correct. Instead, pause and consider whether there's a more valuable approach such as curiosity.
- deleted 5y ago
  [deleted]
berkut 5y ago
It's a noun in CG/VFX. "Can we change the Fresnel to get less reflection?" "No, it's a physically-based renderer - change the IOR" "but, that'll change the refraction angle..." "Yep, split them into AOVs, and let comp deal with it."
smaddox 5y ago
I would just call it polarization. Or if you wanted to be more specific, angle of reflection dependent polarization.
bigbillheck 5y ago
> "Fresnel" is not a noun Says whom?
- aaaaaaaaaaab 5y ago
  Simon

loansindi 5y ago

> "Fresnel" is not a noun. It is in stage and film lighting [0], which made this headline confusing to read. [0] https://en.wikipedia.org/wiki/Fresnel_lantern https://en.wikipedia.org/wiki/Fresnel_lantern

edflsafoiewq 5y ago

Like "diffuse" and "specular", it's certainly used as a noun.

oh_my_goodness 5y ago
Each field can make up whatever jargon is convenient. If we were talking about optics, then 'diffuse' and 'specular' would be adjectives that describe reflections. Fresnel reflection tends to mean specular reflection. The author sounds sensible when he recommends that specular reflections be implemented using Fresnel's math. That is how specular reflections work outside the computer.

GavinMcG 5y ago

I have expertise neither in physics nor in theater. But I do want to chime in to suggest that any time you're about to make a categorical statement like "fresnel is not a noun" in response to someone using it that way, it's worth pausing. Regardless of your certainty, there's rarely a well-grounded reason to think your view is more correct than theirs. All language is contextual. Fields have jargon. And so many arguments on the internet arise when people from different contexts make unnecessarily strong statements insisting that their usage is correct. Instead, pause and consider whether there's a more valuable approach such as curiosity.

deleted 5y ago
[deleted]

berkut 5y ago

It's a noun in CG/VFX. "Can we change the Fresnel to get less reflection?" "No, it's a physically-based renderer - change the IOR" "but, that'll change the refraction angle..." "Yep, split them into AOVs, and let comp deal with it."

smaddox 5y ago

I would just call it polarization. Or if you wanted to be more specific, angle of reflection dependent polarization.

bigbillheck 5y ago

> "Fresnel" is not a noun Says whom?

aaaaaaaaaaab 5y ago
Simon