Turin's theory: that nasal receptors were tiny spectroscopes, measuring vibration by measuring electron current.

FORBES: Magazine Article

The only instruments capable of measuring such vibrations, though, were spectroscopes--meter-long glass-and-metal optical devices that used infrared light.

FORBES: The scent of money

The only instruments capable of measuring such vibrations, though, were spectroscopes--4-foot-long glass-and-metal optical devices that used infrared light.

FORBES: The Scent of Money