In Unbestimmte Anziehung a straight or curve bronze rod leans against a mirror, its reflection appearing to waver, but it’s just a mirage, the result of a concavity at the point of contact. Stylistically and conceptually indebted to Minimalism, Kwade contradicts the received wisdom of that art, particularly its entwined commitments to literalism and phenomenology, by emphasizing the difference between the physical properties of materials and the perceptual effects that such materials can produce.