But if you put a super light on it wouldn't it be more visible? Even 0.035% adds up eventually,
Yes, but it would take a massive amount of light and you'd want to not waste any of the massive amounts of energy you're using so you'd want it directed... such as a LASER. More importantly, you'd probably burn it long before it became easily visible (or rather, before details became visible. It's pretty easy to see a big black blob against a bright white background for example.)
It absorbs the vast majority of (visible) light, that energy is converted to heat. (ever notice a black car gets hotter in the sun than a white one?)
Could laser guided weapons work on a super black material?
It would depend on the wavelength of the laser (probably infrared but that's just a guess) and the wavelengths that the material absorbs.
Similar to the question I asked previously. I wonder what would happen to a vehicle coated in this. How would RADAR or Laser react to it?
RADAR is electromagnetic radiation (Radio waves). Superblack coating would have no effect on RADAR's performance.
Laser guided... see above. Hard to say but if the superblack material was targeted to the wavelengths guiding the weapon, the weapon would likely not be able to see the target since the laser is being absorbed by it rather than reflecting off for the missile/bomb/whatever to see.
Laser... of the right wavelenths would be far MORE effective at destroying a target coated in superblack because LASER weapons work by heating the target; converting the intense directed light into heat on contact - a coating which absorbs light makes the process far more efficient. You'd want a combination reflective/ablative coating to defeat laser weapons (reflects as much light away as possible, and since it cannot reflect it all, it burns off harmlessly rather than exploding or conducting heat to internal components) Though high-powered lasers tend to cause surfaces (even super-reflective ones) to heat so rapidly that they distort, and lose their reflectivity almost instantly IIRC
Something like
LaWS would make quick work of a superblack'd target.
If costs become low enough, I'm sure that it will find it's way into solar panels.
Thermal solar, yes.
Photovoltaic... no.
Using a superblack coating on the elements used to collect the heat energy (not the reflective panels) with a thermal system would make it more efficient. Using it on PV would do little or nothing to help, as I understand the technology.