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Old 06-07-2024, 12:52 AM   #1466 (permalink)
freebeard
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Ha! Boeing delivered two astronauts to the ISS without any doors falling off; and the news was completely buried in noise.

The Earth is a homeostatic system; we need to learn to live within the tolerances. Every slippery slope meets a brick wall.

How about a metamaterial that upcycles IR into a visible wavelength? You get night vision without having to convert photons to electrons and back again.

newatlas.com: Night-vision lenses so thin and light that we can all see in the dark
Quote:
“This is the first demonstration of high resolution up-conversion imaging from 1550-nm infrared to visible 550-nm light in a non-local metasurface," said author Rocio Camacho Morales. "We choose these wavelengths because 1,550 nm, an infrared light, is commonly used for telecommunications, and 550 nm is visible light to which human eyes are highly sensitive. Future research will include expanding the range of wavelengths the device is sensitive to, aiming to obtain broadband IR imaging, as well as exploring image processing, including edge detection.”

The latest work improves on their previous research into night vision using a gallium arsenide metasurface. This time, they found that the lithium niobate metasurface delivered more efficient light processing over a wider surface area.
Also, from Hacker News: geospatial.netlify.app/posts/gds-2024-04-20-cathedrals/
Quote:

Unanswered question
Now we know that the cathedrals are not aligned on the geodesic. Are they “almost” aligned on the mercator projection by accident or was there a plan?

Did the builders knew the earth was round? Or did they followed some method that is today lost, possibly based on the position of a start or a constellation, resulting in an alignment on the Mercator projection?

Certainly 7 cathedrals are too many to be a coincidence, and more historical investigations about the past knowledge would be at this point an interesting project.
Complete with Python code if you want to check their work.
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