Those are slick from the added glass powder for reflectivity.
Who’s putting Teflon on road stripes…?
Comment on Ultra-white ceramic cools buildings with record-high 99.6% reflectivity
EatYouWell@lemmy.world 7 months agoThey could just put a layer of something like Teflon over it. That’s why crosswalk stripes feel so slick.
schmidtster@lemmy.world 7 months ago
EatYouWell@lemmy.world 7 months ago
Huh, I stand corrected. I could have sworn I read an article linked in a discussion about solar panel roads that said Teflon was mixed in the paint to keep the stripes from getting dirty super fast.
Thorry84@feddit.nl 7 months ago
If you put something over it, it loses it’s reflective properties. Something is only as reflective as it’s upper most layer. Unless you use something transparent, but even things we would commonly think of as transparent usually are only transparent at specific wavelength. And even then it’s probably not really transparent, more like translucent. Not to mention things like internal reflections and wavelength lengthening.