Invention in the name of science. With precautions attached.
I'm just going to be non explanation and specific.
Put a room or say dimensionaly sized areas.
Like a box
And a room
Or 300x300 square meter
Or a 300x900 square meter.
With a variable number of reflective sides. A mirror or take all elements which produce a reflective or absorbent surface.
And introduce onto each reflective and absorsive substance that eventually we decide to make a room of solid mirror or negative non reflective.
And we develop a light source system that produce every type of light be man can make.and also the natural lights.
And like inside the box of mirrors we would have a lot of reflections on each light beam.
So in the name of science and feasibility in the relevance to aquisition wisdom I owledge and understanding.
On the result of a signal, mix, or even ALL light beams casted in at once. Unless the source of light beams are jeopardizing by heat because we dont want to cross[b] every single light beam Into an inverted disco ball and try to blind cyclopes dad