This piece is inspired by Rudolph Steiner's statement, "everything in the universe is made from light."  I hypothesised that if everything was made of light it would therefore be deconstructed when bombarded by light, and that the time, this deconstruction would take, for any given mass and light intensity, could be calculated. With this in mind I constructed a device capable of 'evaporating' a round of wood. Physicist Dr. John Smith calculated the time this would take; I then created a plaque reading "This light when activated will completely dissipate the round of wood within 370 years," and attached it to the front of the 'Clock.'