Definition of "non-optical" [non-optical]

• That does not involve vision (adjective)
• That does not use optics (adjective)

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• "That said, images of a molecules and atomscan and have been produced using a non-optical device called a Scanning Tunneling Microscope (STM)."
• "If we had a camera that clumsily had the non-optical parts interposed between the lens and the light sensor, we might be impressed with the blind, clumsy intricacy of a solution that involved using an array of fiber optics to shunt light around the opaque junk, but it wouldn't suggest that the original design was particularly good."
• "As a result of realizing that everything that we see and think as "real" is in actuality a pattern formed by infinitesimally small particles … and to kick it off, we can't even see them except through non-optical detecting devices such as the scanning tunneling microscope."