Ephemera Undone is a sculptural installation in the dedicated Art space of the Library at Melbourne Girls Grammar school in South Yarra. It is a series of flower heads that open and close over an extended period of time to provide an altering colour spectrum (due to the diffraction of white light). The flowers are made of materials that have the ability on an atomic level to provide for structural colour via this diffraction process. The materials used are also birefringent and the colour associated with this effect is also visible through polarising windows that line internally one side of the glass installation box. Each flower has a further flower embedded with it which also provides additional polarization. A second but smaller series of plants which essentially remain stationary are evolutionary linked to the larger version and are themselves birefringent. They provide light that marks a seasonal change. - https://www.mggs.vic.edu.au/news/ephemera-undone