Quantum mechanics: wave-particle duality of matter is a slumped glass sculpture referring to the particle-wave phenomenon in quantum mechanics. Atom sized matter is proven to display either wave behaviour or particle behaviour, but never both simultaneously. When the matter such as photons are not observed through measurement, it displays wave-like behaviour, but as soon as the photons are measured to determine its nature and position, the wave function collapses and it only displays particle behaviour.

Quantum mechanics: wave-particle duality of matter displays this behaviour: when light (photons) is shined on the glass the shadow forms a pattern that looks like particles on the opposite side of the glass, but the light also reflects against the glass and diffract into what seems like wave patterns next to the glass. The waved glass acts as a barrier but also a bridge between the particle and the wave nature of reality, acting as a medium into the invisible nature of that which our world consists of.  

The transparency of the glass is a metaphor for the invisibility and uncertainty of the nature of reality and that light needs to be shed on it.