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arachnoid

A site for people who think. Intellectual resources, programming, astronomy, science, mathematics, Java/JavaScript applets, programming instruction, home of Arachnophilia.

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00: Adventures in Ray Tracing: 07: Changes to the Interior of Objects

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arachnoid

A site for people who think. Intellectual resources, programming, astronomy, science, mathematics, Java/JavaScript applets, programming instruction, home of Arachnophilia.

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00: Adventures in Ray Tracing: 13: Virtual Telescope II: Cassegrain

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Monks Mound at the Cahokia Mounds UNESCO World Heritage Site near Collinsville, Illinois (© Matthew Gush/Alamy)

Monks Mound at the Cahokia Mounds UNESCO World Heritage Site near Collinsville,
Monks Mound at the Cahokia Mounds UNESCO World Heritage Site near Collinsville,
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Bing Images

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Cranberry bog (© SHSPhotography/Getty Images)

Cranberry bog (© SHSPhotography/Getty Images)
Cranberry bog (© SHSPhotography/Getty Images)
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