I know nothing about this sort of stuff, but if this were applied to cars, would there be an increased risk of temporarily blinding other drivers on a sunny day?
How does it affect white balancing on traffic cameras?
Whitest paint is now thin enough to coat cars and planes
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Re: Whitest paint is now thin enough to coat cars and planes
#12Earlier quoted context omitted.
Yes, it goes somewhere where we don't feel the need to spend energy moving it away from.
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I would assume that cooling buildings is more efficient than cooling small cars and planes. Buildings can, for example, use a ground source heat pump, which isn't an option for vehicles.
I also have to assume that a perfect reflection from the top of a car or a plane just sends the radiation out into space.
Re: Whitest paint is now thin enough to coat cars and planes
#13Re >> "with an ability to reflect around 98% of incoming sunlight"
Seems like a mirror would reflect even more light. Now, obviously we don't want to make the exteriors of our buildings and cars a mirror!. but it made me wonder: What's the difference between a really really really white paint that reflects 98%+ light, vs. a reflective surface? Is it that the white paint reflects the light, but in a "scrambled" form, thus losing the image?
Re: Whitest paint is now thin enough to coat cars and planes
#14Re: Whitest paint is now thin enough to coat cars and planes
#15Earlier quoted context omitted.
Yes, it goes somewhere where we don't feel the need to spend energy moving it away from.
Quoted post unavailable.
Buildings subtend a very small solid angle relative to the earth and the sky most anywhere I drive (and I live in a major metropolitan area).
Re: Whitest paint is now thin enough to coat cars and planes
#16Re >> "with an ability to reflect around 98% of incoming sunlight" Seems like a mirror would reflect even more light. Now, obviously we don't want to make the exteriors of our buildings and cars a mirror! . but it made me wonder: What's the difference between a really really really white paint that reflects 98%+ light, vs. a reflective surface? Is it that the white paint reflects the light, but in a "scrambled" form,…
Yes, it's not reflecting the light so much as re-radiating it in a diffuse pattern.
Re: Whitest paint is now thin enough to coat cars and planes
#17> The new material features boron nitride in hexagonal nanoplatelet form and offers a solar reflectance of 97.9%
What's the difference between white paint and a mirror? Scatter?
Re: Whitest paint is now thin enough to coat cars and planes
#18Re >> "with an ability to reflect around 98% of incoming sunlight" Seems like a mirror would reflect even more light. Now, obviously we don't want to make the exteriors of our buildings and cars a mirror! . but it made me wonder: What's the difference between a really really really white paint that reflects 98%+ light, vs. a reflective surface? Is it that the white paint reflects the light, but in a "scrambled" form,…
Yes, it's not reflecting the light so much as re-radiating it in a diffuse pattern.
I don’t think there’s a physical difference between reflection and re-radiation, is there? Reflection is just highly organized/non-diffuse.
Re: Whitest paint is now thin enough to coat cars and planes
#19I know nothing about this sort of stuff, but if this were applied to cars, would there be an increased risk of temporarily blinding other drivers on a sunny day?
It won't shine any brighter than the light that's hitting it.
Re: Whitest paint is now thin enough to coat cars and planes
#20If you mixed it with Vantablack, would you get the greyest possible paint? /s
You could try buying some and find out!
https://culturehustle.com/products/black-v1-0-beta-the-world...
You could also mix it with the 'whitest white'