Philosophical Observations on the Senses of Vision and Hearing : To Which Are Added, a Treatise on Harmonic Sounds, and an Essay on Combustion and Animal Heat

Omtale

Published in 1780, this work was the first to suggest that specific receptors, tuned to only part of the physical spectrum, were responsible for communicating auditory and optical sensation. This insight led John Elliott (1747–87) to postulate the existence of ultraviolet and infrared radiation, prompting future discoveries in human sensory perception.