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Surfaces of liquid light draw the luminous energy of the space around her into the hefty sculpture's forbidding mass.

Dye-based cells are similar to the silicon-based variety found on rooftops around the world in that both rely on a semiconductor to assist the conversion of luminous energy into the electrical sort.

All electric lamps are contrivances for converting into luminous energy a percentage of the electric energy that is supplied through the mains.

The former is a poor radiator; furthermore, the lime radiates a relatively greater percentage of its total energy in the form of luminous energy.

All this time its luminous efficiency is increasing, because it is radiating not only an increasing percentage of visible radiant energy but an increasing amount of the most effective luminous energy.