I was able to experience this once on a tour of the physics building back in 1972 at ISU. They were creating bead of gold oxidized at high temperature and low pressure with oxygen bleed. The bead was to be used in black body radiation experiments. Looking at the bead was like having a hole in your vision. You really could not focus your eyes on it very well.
Extension-Door614 t1_j2dfopg wrote
Reply to TIL The darkest color in the world doesn't have a name, it has the ability to absorb 99.995% of light and has been used to cover a diamond worth 2 million dollars for an "artistic project" by mic3ttaa
I was able to experience this once on a tour of the physics building back in 1972 at ISU. They were creating bead of gold oxidized at high temperature and low pressure with oxygen bleed. The bead was to be used in black body radiation experiments. Looking at the bead was like having a hole in your vision. You really could not focus your eyes on it very well.