littlelimpstiff14u2:

Light & Dichroic Glass Kinetic Sculptures by Chris Wood

Chris Wood’s medium is light. She uses a range of high and low-tech
optical materials to harness patterns of light that suggest ephemeral
glimpsed moments in the natural world.  Her sculptures are simple
arrangements creating kinetic patterns in response to the environments
in which they are placed. Wood orders the accidental and makes us
reflect on the experience of seeing.

Chris often uses a material
called dichroic which was originally developed by NASA space agency.
Dichroic is a colourless material that filters and reflects wavelengths
of light producing a huge variety of rainbow coloured shadows and
projections. (more about dichroic)