Category Archives: Ray Tracing

The statement below is false

If you think I’m wrong, try looking at it from a different perspective. The picture above came from an optical illusion blog at: http://www.anopticalillusion.com/ and I was led there from: http://www.josleys.com/index.php which is an amazing collection of mathematical imagery by … Continue reading

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Leonardo, lenses and the earliest photograph?

Walking around Venice I had seen a large poster for a Leonardo Da Vinci exhibition, with no details of locations or dates, and on the Internet the only links were to exhibitions from previous years, but arriving in Florence I … Continue reading

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PaulBourke.net

Another link from Al Vachris: PaulBourke.net. The link above has a general subject index, and google site search; for a full list of the site content go to the detailed site index. Here’s what the author says about it: “The … Continue reading

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Yet more pendulums

Following Dynamically Defined Dancing Pendulums, another three versions of the dancing pendulum theme.  First a POV-RAY version by PM 2Ring, complete with reflections and shadows: POV-Ray Pendulums (click to open in a new window) and an interactive Javascript version: Javascript pendulums by PM2Ring (click … Continue reading

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Will it Fall Over?

Is the arch in the picture below stable, or has it been created in Photoshop, or perhaps with the assistance of some glue or external straps? A simple analysis suggests that tension will be generated at the bottom of the … Continue reading

Posted in Arch structures, Finite Element Analysis, Newton, Ray Tracing | Tagged , | 2 Comments