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Ultra-white ceramic cools buildings with record-high 99.6% reflectivity (newatlas.com)

submitted 10 months ago by L4s@lemmy.world to c/technology@lemmy.world

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

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[-] KapiteinPoffertje@lemmy.world 38 points 10 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.

[-] Silentiea@lemm.ee 31 points 10 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.

[-] intensely_human@lemm.ee 8 points 10 months ago

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

[-] Silentiea@lemm.ee 9 points 10 months ago

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

[-] Pulptastic@midwest.social 2 points 10 months ago

We have snow here

this post was submitted on 14 Nov 2023

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