What is a color? The perception we have of a reflection of light on a surface. What is black, as perceived by human eye? It is the opposite of color. Black is an achromatic color, literally a color without hue. Black is a surface that reflects or emits only very low light and that absorbs most of the visible light.
We're obsessed with Vantablack, the blackest material ever made. Every time Surrey Nanosystems, the company that makes it, releases a new video it blows us away. In this new video, the researchers coated a sphere with Vantablack. They then moved the sphere over another square of Vantablack, and it disappeared!
Vantablack is the world’s blackest black. It’s so black that 3D objects coated in the material are visually reduced to mere silhouettes. A crumpled piece of tinfoil, for example, looks like a vast abyss. That’s because the material absorbs more than 99.965 percent of light. “It’s the blackest material in the universe after black holes,” the British sculptor Anish Kapoor once said. “It’s a physical thing that you cannot see.”
An ultra-black coating that absorbs virtually all incident light around it makes surface features disappear so it looks like a black hole. That also helps it boost performance of the Kent Ridge 1 satellite's star trackers and Earth observation instruments.
The S-VIS version of Surrey NanoSystems’ Vantablack spray coating has been used to enhance the optical sensitivity of the optical instrumentation on board the Kent Ridge 1 low earth orbit (LEO) satellite.
The paint used on the Hubble telescope is one of the blackest materials in space. It's there to reduce stray light so the instrument can photograph the best possible images of our solar system and beyond.