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submitted 8 months ago by [email protected] to c/[email protected]

Ultra-white ceramic cools buildings with record-high 99.6% reflectivity::undefined

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[-] [email protected] 34 points 8 months ago

Probably illegal here because of the high reflective value. Depending on the sun's position, it could dazzle and blind people, e.g. people driving cars or riding bikes. I know that for this reason, shiny metal roofs are not allowed.

[-] [email protected] 38 points 8 months ago

There is a difference between mirror like reflection and diffuse reflection. Mirror reflection is what you get with metal roofs which beam the sun directly to a target resulting in one spot being blinded. Diffuse reflection will spread it around, resulting in more light all around which is what we can handle as humans.

[-] [email protected] 31 points 8 months ago

Can mostly handle. Snow blindness is a thing, and that's all diffuse reflection too, not specular. But it's unlikely a roof would be such a problem.

[-] [email protected] 8 points 8 months ago

The reason for snow blindness is the fact the snow fills such a high portion of the visual field.

[-] [email protected] 9 points 8 months ago

Yeah, hence it's unlikely a roof would fill it to the same extent and wouldn't be a problem.

[-] [email protected] 2 points 8 months ago

We have snow here

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this post was submitted on 14 Nov 2023
509 points (99.0% liked)

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