Chemical spectrum

a spectrum of rays considered solely with reference to their chemical effects, as in photography. These, in the usual photogrophic methods, have their maximum influence at and beyond the violet rays, but are not limited to this region.

See also: Spectrum

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Consuming large gas giants - such as Jupiter, which is thought to have a rocky core that could easily have the terrestrial mass of 15 Earths - would not produce the same chemical spectrum as seen on Kronos.
Though the CIC and its constituent societies have awards covering most of the chemical spectrum, there is one award conspicuous by its absence: a green chemistry award.
As these long-lived species come to dominate the chemical spectrum `we may see some hiccups along the way', he says.