4 ms·
I'm curious: What are the use cases for these super light absorbent blacks?
by wolframhempel 3y ago
I'm curious: What are the use cases for these super light absorbent blacks?
- 0134340 3y agoYou can paint a hole in the side of mountains and fool roadrunners into running in(to) them, then perhaps feast on the fruits of your labor. Or paint holes in the ground to fool your nemesis'. Though if Looney Tunes taught me anything, it's that it only works when you don't want it to work.
- kylebenzle 3y ago[flagged]
- junon 3y agoIf this genuinely needs to be said then all hope is lost.
- jlg23 3y ago~"Sensitive optics" A list of examples: https://en.wikipedia.org/wiki/Vantablack#Applications https://en.wikipedia.org/wiki/Vantablack#Applications
- 7373737373 3y agoPainting satellites so they do not annoy astronomers. Bright satellites show up as lines in long exposures. A wide field sky survey image may be full of them.
- vincnetas 3y agoI think there is a reason why the satellites are reflective. One thing that comes to mind is to not overheat.
- Faaak 3y agoHard to dissipate heat when conduction and convection are basically null.
- b112 3y agoHeat radiates as IR and other such, even without air. Fun fact, black both absorbs and radiates heat faster.
- HenryBemis 3y agoOf course, have you touched a black surface? If it wouldn't radiate it wouldn't be hot ;)
- schoen 3y agoYour sense of heat when touching things is mainly due to conduction, not radiation, isn't it?
- HenryBemis 3y agoHmm the radiator that is keeping my legs warm would disagree with you, but I'm not a physicist so I will simple shut myself up :)
- PhilipRoman 3y agoWell it's a pretty big difference in terms of intensity, sitting next to a radiator for a few hours is comfortable, but touching one would give me a burn in a matter of seconds (screw you whoever decided that my apartment must be warmed to 25 degrees)
- trashtester 3y agoOnly if it's also "black" in the IR spectrum. In fact, an object that is completely reflective in the IR spectrum, but black in the visible spectrum would get really hot really easily.
- jacknews 3y agoI think you want them to show, just not too bright. Otherwise you get stars mysteriously disappearing.
- b112 3y agoAnd thus, the reddit "alienz are cloaked and spying on me and mine!" forums start.
- nabla9 3y agoCoating insides of optical instruments, especially infrared cameras.
- PAPPPmAc 3y agoYup. The research group I work with builds a lot of custom camera parts (mostly 3D printed) for different projects, and we keep a bottle of Black 3.0 around to coat internal surfaces. We'll pick up some 4.0 shortly. It's a quick and easy way to guarantee light-tightness and kill internal reflections.
- black_puppydog 3y agoIt looks very interesting when you use it in constrast to other colors. Under the right conditions it creates an effect of "absence" that the human brain (at least mine) doesn't have a reference for.
- schoen 3y agoHuh, kind of like how standing next to a highly sound-absorbing material can be painful or disorienting, making your brain think that your ear is damaged or blocked somehow?
- black_puppydog 3y agoyeah I'd imagine it's similar. In my family we took a piece of christmas decoration one year and painted it in Black (v3) and it was eerie. It was just hanging there among all the other glowing/shiny stuff but it was impossible to really make out its contours or even be sure it's really there. :D
- GuB-42 3y agoI could add things like car dashboards to the list, to avoid annoying reflections. And also for better "Pepper's ghosts". Which is based the same effect that makes you see your car dashboard reflected in the windshield.
- thanatos519 3y agoOn my Ikea Hemnes corner desk I painted most of the hutch, plus the bezels on the 2 24" panels in it. It's like the displays are floating in the void.
- greggsy 3y agoI’m building a telescope and would love to use it
- SirMaster 3y agoHome theaters using projectors is the use-case for me. But I stick with triple black velvet which seems to be even blacker than these paints due to the 3d texture to it being able to trap and absorb more light.