photics

English

Noun

photics (uncountable)

1. The science of light.

Usage notes

• A general term sometimes employed when optics is restricted to light as producing vision.

References

• Edward H[enry] Knight (1877) “Photics”, in Knight’s American Mechanical Dictionary. […], volumes II (GAS–REA), New York, N.Y.: Hurd and Houghton […], →OCLC.
• “photics”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.