The caecum wall has many folds which enlarge the absorbing surface.

Black against black: absorbing surface against that which reflected.

It is not often the case in real rooms, depending on the disposition of reflective, dispersive and absorbing surfaces.

A photon absorbed imparts its whole momentum into the absorbing surface, because its mass goes from moving to stopped.

It is inhabited by various races of demons, and expands constantly by conquering and absorbing surface worlds.

Thermal control was achieved through the use of passive reflecting and absorbing surfaces, thermal shields, and movable louvers.

These depend on speaker location(s) with respect to reflecting, dispersing, or absorbing surfaces (including changes in speaker orientation) and on the listening position.

Selective surfaces take advantage of the differing wavelengths of incident solar radiation and the emissive radiation from the absorbing surface:

The element emits infrared radiation that travels through air or space until it hits an absorbing surface, where it is partially converted to heat and partially reflected.

The picture is created as the individual mirrors move to either reflect light toward the projection surface (pixel on), or toward a light absorbing surface (pixel off).

Kirchhoff in 1860 introduced the theoretical concept of a perfect black body with a completely absorbing surface layer of infinitely small thickness, but Planck noted some severe restrictions upon this idea.

Root hairs of the rhizodermis are always in close contact with soil particles and because of their high surface to volume ratio form an absorbing surface which is much larger than the transpiring surfaces of the plant.

A thermally sensitive coil was attached to the blades in such a way that low temperatures within the satellite would cause the coil to contract and rotate the blades and expose the heat absorbing surface, and high temperatures would cause the blades to cover the black patterns.