Twisted Sifter:

Vantablack® is a super-black coating that holds the world record as the darkest man-made substance. It is the darkest material ever measured by the UK’s National Physical Laboratory, reflecting only 0.036% of the light that strikes it (measured at 700nm). It is currently available in two versions, either directly applied to surfaces using vacuum-deposition technology or by spraying and then post-processing.

Vantablack is not a black paint, pigment or fabric, but is instead a functionalized ‘forest’ of millions upon millions of incredibly small tubes made of carbon, or carbon nanotubes. Each nanotube in the ‘Vantablack forest’ has a diameter of around 20 nanometres (that’s about 3,500 times smaller than the diameter of the average human hair), and are typically from around 14 microns to 50 microns long. A surface area of 1 cm2 would contain around a billion nanotubes.

So how dark is it really?

This stuff is fascinatingly weird.