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From: tomyee3@gmail.com (ProkaryoticCaspaseHomolog)
Newsgroups: sci.physics.relativity
Subject: Re: New Terrell Rotation Animation
Date: Sun, 9 Feb 2025 21:24:27 +0000
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On Sun, 9 Feb 2025 17:54:22 +0000, guido wugi wrote:

> Op 9/02/2025 om 16:25 schreef ProkaryoticCaspaseHomolog:
>> This morning, I completed an animation for Wikipedia
>> https://commons.wikimedia.org/wiki/File:Terrell_Rotation_and_Illusory_FTL.gif#%7B%7Bint%3Afiledesc%7D%7D
>>
>>
>> No major insights, but it was fun to program. I've added it to the
>> article on Special relativity
>> https://en.wikipedia.org/wiki/Special_relativity#Measurement_versus_visual_appearance
>>
>
> Nice work! I've seen earlier well-done German animations, don't know
> where I kept the links though.

I believe this is what you were thinking about.
https://www.spacetimetravel.org/
https://www.tempolimit-lichtgeschwindigkeit.de/

> About "Measurement_versus_visual_appearance", that has always been a
> topic of interest to me, and it took years (if not decades:) to see it
> trickle in to SRT descriptions (before that, there was general confusion
> between both descriptions, still going on in some minds:).
>
> Here are my latest Desmos exercises on it:
> https://www.wugi.be/srtinterac.html (under: Measuring relativistic
> motion, and Seeing it)
> (older QB examples at https://www.wugi.be/paratwin.htm and
> https://www.wugi.be/qbRelaty.html)
> "Terrell rotation" can be seen at work in all kinds of position, in 2D.
> The only "direct vision" of pure Lorentz length contraction is far away
> along the observer-based perpendicular [line/plane] to the direction of
> motion.
> :(I'm confident though that my graphs won't make it to Wiki):