Multiple axis, fiber optic interferometric seismic sensor

Multiple beam pair optical imaging

Multiple control frequency phase modulator in phase modulated in

Multiple frequency laser interference microscope

Multiple input source technique for deriving cavity linewidth

Multiple, parallel, spatial measurement of electrical phase

Multiplex interferometer

Multiplexed fiber optic sensor

Multiport optical waveguide interferometer having a flat wavelen

Multisensor particle counter utilizing a single energy source

Natural gas detection apparatus and method operable in a moving

Near field optical probe for critical dimension measurements

Near-simultaneous measurements at forward and back scatter angle

Nephelometer

Nephelometer

Nephelometer and nephelometer method for assaying immunochemical

Nephelometer and turbidimeter combination

Nephelometer having means semiautomatically canceling components

Nephelometer instrument

Nephelometer instrument