131–140 of 271 posts
"We did a very rough calculation," said Prof Ruan. "And we estimate we would only need to paint 1% of the Earth's surface with this paint - perhaps an area where no people live that is covered in rocks - and that could help fight the climate change trend." LMAO me I love living in the future. This sentence could’ve been lifted from the Hitchiker’s Guide to the Galaxy.
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Which mirrors are that, and why are they made, what are they used for? Just giant telescopes on remote mountaintops, or is there more?
Lasers! :) I'm talking about dielectric mirrors. Wikipedia suggests 99.999% or better reflectivity over a narrow range of wavelengths.
What we need is a paint that turns white when air temperature is high, and black when air temperature is low to reduce our heating and cooling needs.
"Darker materials also emit radiation more readily than light-colored materials, so they cool faster."
Reminds me of “anti-flash white,” developed for bombers during the early years of the cold war. The theory was that the specially formulated white paint would reflect enough of a nuclear explosion’s thermal energy to allow the aircraft to survive the explosion as the bomber departed the scene. https://en.wikipedia.org/wiki/Anti-flash_white It was also used on interceptors like the Avro Arrow prototypes.
This makes me wonder, does "anti-flash white" reflect more than polished mirror-like metal?
The Wikipedia page does say "The purpose of the colour was to reflect some of the thermal radiation from a nuclear explosion", as far as my experience goes polished metal can still get extremely hot.
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Sadly, from their FAQ[0]: Q. Can I paint my car / bike etc... A. NO - 3.0 is quite fragile and will just scratch off, it won’t weather well. Q. Can I put a topcoat over it then? A. NO that will destroy the matte effect, and many topcoats (including our COAT) will react with the paint and ruin the finish. https://culturehustle.com/collections/black/products/black-3... (it's on the right hand side a few scrolls down th…
Should be okay inside the car though...
Someone needs to compile a list of all this fringe tech that I see popping up in my feeds, almost daily now. I know there are techpress blogs that pump out articles like this, but there doesn't seem to be an authoritative compendium of such tech anywhere on the net. I could curate this by hand with 3 hours of free time and some Red Bull I suppose. The reason I want this is because we seem to be swimming in innovation…
You know what's big, white and help with climate change ? The ice caps we're destroying. We won't replace them with paint