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Black Blacker Than Vantablack

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Re: Black Blacker Than Vantablack

#71

Post by ericjang »

gambiting wrote: post #50
chongli wrote: post #18

I think it would be cool to walk into a room painted entirely with this material. I bet it would be so disorienting that people would fall down and get vertigo. So weird.

It would just be....completely dark? I had this experience when working at a mine at one point, and if you went down one of the tunnels and switched off your headlamp.....it was absolute darkness. Like, we think that our bedroom at night is "completely dark" - but that's usually not true, that's always some source of light, after some adjustment you can see at least faintly. In an underground corridor without any lig…

That reminds me of the flavor text of this Magic the Gathering Card (https://gatherer.wizards.com/pages/card/details.aspx?multive...)

There's an experience worse than blindness—it's the certainty that your vision is perfect and the horror that there's no world around you to see.

Re: Black Blacker Than Vantablack

#72

Post by goldscott »

arcticbull wrote: post #54
axaxs wrote: post #36

Earlier quoted context omitted.

I was thinking about car/plane applications. At first thought, it's "that reflects no light that's a terrible idea". Thinking further, the absolute absence of anything itself stands out from a normal background, day or night. Would be a bit interesting to see.

Check out the Vantablack BMW X6 ( https://www.bmw.com/en/design/the-bmw-X6-vantablack-car.html )

I'm curious... would that car get incredibly hot parked in the sun?

Re: Black Blacker Than Vantablack

#73

Post by bdamm »

gambiting wrote: post #50
chongli wrote: post #18

I think it would be cool to walk into a room painted entirely with this material. I bet it would be so disorienting that people would fall down and get vertigo. So weird.

It would just be....completely dark? I had this experience when working at a mine at one point, and if you went down one of the tunnels and switched off your headlamp.....it was absolute darkness. Like, we think that our bedroom at night is "completely dark" - but that's usually not true, that's always some source of light, after some adjustment you can see at least faintly. In an underground corridor without any lig…

Pilots flying in "hard" instrument conditions also experience this. You can see the interior of the airplane, but everywhere you look outside is exactly the same shade of grey/black/white, and there's no usable data from your sense about the position of the airplane relative to the earth. Passengers who think about this might intellectually get it, but it's quite a different experience when you're looking out the front window and responsible for choosing the correct control inputs. I believe scuba divers diving at night also can experience this.

Re: Black Blacker Than Vantablack

#74

Post by RangerScience »

chongli wrote: post #18

I think it would be cool to walk into a room painted entirely with this material. I bet it would be so disorienting that people would fall down and get vertigo. So weird.

You can get Black 2.0 (or wait for 3.0) and do it. As long as you're not Anish Kapoor.

https://www.culturehustleusa.com/products/black-v1-0-beta-th...

Re: Black Blacker Than Vantablack

#76

Post by kazinator »

jpindar wrote: post #55

If you want to see something very black, look at the side of a stack of razor blades or x-acto knife blades. The individual blades are shiny, but the geometry of the stack makes it absorb almost all the light hitting it.

Another deep black is a small opening (the only one) into a large, hollow object.

https://en.wikipedia.org/wiki/Hohlraum

Re: Black Blacker Than Vantablack

#78

Post by groby_b »

Scaevolus wrote: post #45
axaxs wrote: post #42

Earlier quoted context omitted.

That's very interesting, I was thinking about stealth bombers. Do you think it would have applications in say, military uniforms? I wonder how it compares to digital camo, mirror based camo, etc in regards to detection.

Carbon nanotubes are similar to asbestos fibers, so it's not something that you'd want to put in a garment.

That's assuming the military cares about the long term effects.

Re: Black Blacker Than Vantablack

#79

Post by 6nf »

goldscott wrote: post #72
arcticbull wrote: post #54

Earlier quoted context omitted.

Check out the Vantablack BMW X6 ( https://www.bmw.com/en/design/the-bmw-X6-vantablack-car.html )

I'm curious... would that car get incredibly hot parked in the sun?

Yes it will head up until the black body radiation equals the incoming solar energy :)

Re: Black Blacker Than Vantablack

#80

Post by watersb »

elihu wrote: post #66
gambiting wrote: post #50

Earlier quoted context omitted.

It would just be....completely dark? I had this experience when working at a mine at one point, and if you went down one of the tunnels and switched off your headlamp.....it was absolute darkness. Like, we think that our bedroom at night is "completely dark" - but that's usually not true, that's always some source of light, after some adjustment you can see at least faintly. In an underground corridor without any lig…

Even well-lit caves (or similar environments) can be disorienting. A few years ago I was walking in a sandy-floored lava tube with a flashlight, and the floor was sufficiently uniform and featureless that I didn't have a clear sense of depth perception. Another time I was flying a radio-controlled glider at the beach on a foggy day. There was a big rock sticking up in the middle of the beach. I thought the glider was…

Flying over water can be dangerous, as it is often impossible to judge distance to the surface, even for experienced pilots,
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