From: David Grosof
To: jeevacation <[email protected]>
Subject: Video showing the fractal geometry of lunar surface and tricky shape from shading cues
Date: Mon, 14 Jan 2019 20:17:55 +0000
Hi, Jeffrey,
I think you will enjoy checking out this video of the Chinese spacecraft landing on the far side of the moon.
https://www.syfy.corn/syfywire/amazing-video-chinese-lander-and-rover-descend-to-the-moons-far-side (1)
Determining the altitude/distance to the surface is hard/impossible until the very end when dust kicks up. It's a
great illustration of self-similarity across a lot of spatial scale in a geological surface, and implicitly of how the
absence of atmospheric blurring/softening of detail contributes to the difficulty of distance determination. (2)
Craters sometimes turn into bumps/hillocks because of the way the brain sorts out shape from shading info.
Illustrations in this article (click through) are "prompts": https://www.scientificamerican.com/article/seeing-is-
believing-aug-08/
Enjoy!
d.
EFTA01008525
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