The deflection of the pillar tips from a reference position is detected optically and serves as a representative of the wall-shear stress.

Also one of the outstanding properties of the NV center was demonstrated, namely room-temperature optically detected magnetic resonance.

Photoluminescence and electron paramagnetic resonance techniques were combined into optically detected magnetic resonance, detected from a single center.

Binary stars are often detected optically, in which case they are called visual binaries.

A bio-molecular assay in which clusters of ligand coated nano-particles are both optically trapped and optically detected after target molecule induced clustering was proposed in 2011 and experimentally demonstrated in 2013.

Jupiter is one planet where lightning activity has been optically detected.

If, however, you place a light at the point of projection, the shade becomes actual and can be detected optically.

Clot formation is detected optically or mechanically by a coagulation instrument.

The position of the suspended object can be detected optically or magnetically, other schemes may sometimes be used.