Ultra-Black Coating, Shading and Contour

Dharma’s formal account describes its coating as making grain and shading difficult to perceive, so that rounded wood meets apparently flat black within one solid form. Surface shading and the contour against a background are different kinds of information: weakening one does not establish that the other disappears to the same degree.^[1]

The distinction also applies to Hekikan. Difficulty seeing a surface mark differs from difficulty recognising the positions or thicknesses of the panels. An account of something becoming invisible needs to specify which information about form is affected.^[2]

MIT’s 2019 account of The Redemption of Vanity describes Diemut Strebe and a research team coating a diamond with a low-reflectance carbon-nanotube layer. It connects the change from a brilliant object to a black shape with the material’s absorption of incident light.^[3]

The comparison concerns how reduced reflection changes surface appearance. It does not identify the paint used in Dharma or Hekikan as the same carbon-nanotube material, nor provide measurements of the coatings on these works.

Observation can distinguish shading on exposed wood, reflections on the coating, and boundaries against a background. A change in photographic exposure also differs from a change in the coating itself. Recording comparable viewpoints and photographic conditions allows appearances across displays to be examined more reliably than a claim based on one image.

A solid appearing flat has not physically become a plane. In Dharma, exposed wood and coating meet on the same body; their boundary marks a change in the information available for judging depth. A photograph isolating the black surface and one including wood and background offer different conditions for examining that boundary.

Changes in background or viewpoint require contour and surface appearance to be considered separately even when the coating is unchanged. Recording what can and cannot be judged gives a more specific account than presenting one photograph as proof of an effect. Treating black solely as a symbol of absence overlooks the changing depth cues of a body that remains.