It’s not visibly reflective. Yes, it’s white, but it’s cool to the touch because the majority of the energy is radiated out into space via non-visible wavelengths. Someone has already posted a great YouTube video from Night Hawk In Light in a comment where he explains how this tech works and makes his own paint!
Comment on Ultra-white ceramic cools buildings with record-high 99.6% reflectivity
Treczoks@lemmy.world 11 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.
AstridWipenaugh@lemmy.world 11 months ago
trackindakraken@lemmy.whynotdrs.org 11 months ago
Yeah, it’s good to read the article before commenting.
Here’s a link to the Night Hawk video. Good stuff. invidious.fdn.fr/watch?v=KDRnEm-B3AI This guy just gives away a formula he developed for the pigment. OG shit.
PsychedSy@sh.itjust.works 11 months ago
Him, Thought Emporium and Breaking Taps are in their own league of genius.
ladicius@lemmy.world 11 months ago
I have aluminium foil covering my windows in summer and that doesn’t blind anyone by far, even in full sunlight.
Not everything reflecting is a mirror.
KapiteinPoffertje@lemmy.world 11 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 11 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.
Pulptastic@midwest.social 11 months ago
We have snow here