Textures are well-defined-like water rippling in a trough-and the changes in definition and brightness as you move in relationship to an object are impressive.
The same is true of the frequently repeated section where the hero cares for his horse by brushing dirt off its coat, filling a trough with water, and feeding it apples.
Kahn's first piece for the museum was enormously popular a metal bar dipped into a trough of soapy water, then hoisted into the air by ropes on either side.