Draper law

Dra·per law

(drā'pĕr),
a chemical change is produced in a photochemical substance only by those light rays that are absorbed by that substance.
[John William Draper]
Farlex Partner Medical Dictionary © Farlex 2012

Dra·per law

(drā'pĕr law)
A chemical change is produced in a photochemical substance only by those light rays that are absorbed by that substance.
[John William Draper]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Draper,

John W., English chemist, 1811-1882.
Draper law - a chemical change is produced in a photochemical substance only by those light rays that are absorbed by that substance.
Medical Eponyms © Farlex 2012