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An optical instrument for forming and examining spectra (as that of solar light, or those produced by flames in which different substances are volatilized), so as to determine, from the position of the spectral lines, the composition of the substance.

Of or pertaining to a spectroscope, or spectroscopy. -- Spec`tro*scop"ic*al*ly, adv.

One who investigates by means of a spectroscope; one skilled in the use of the spectroscope.

The use of the spectroscope; investigations made with the spectroscope.

Same as Sphygmograph.

tinual bombardment of the screen by the a rays are thus rendered visible. -- Spin*thar`i*scop"ic (#), a.

A wet meter used to determine the breathing capacity of the lungs.

An optical instrument used in determining the position of the planes of light-vibration in sections of crystals.

An instrument with two lenses, by which an image of a single picture projected upon a screen of ground glass is made to present an appearance of relief, and may be viewed by several persons at once.

An optical instrument for giving to pictures the appearance of solid forms, as seen in nature. It combines in one, through a bending of the rays of light, two pictures, taken for the purpose from points of view a little way apart. It is furnished with two eyeglasses, and by refraction or reflection the pictures are sup…

Of or pertaining to the stereoscope; characteristic of, or adapted to, the stereoscope; as, a stereoscopic effect; the stereoscopic function of the eyeglasses; stereoscopic views. -- Ste`re*o*scop"ic*al*ly, adv.

One skilled in the use or construction of stereoscopes.

The art or science of using the stereoscope, or of constructing the instrument or the views used with it.

To auscultate, or examine, with a stethoscope. M. W. Savage.

Of or pertaining to a stethoscope; obtained or made by means of a stethoscope. -- Steth`o*scop"ic*al*ly, adv.

One skilled in the use of the stethoscope.

The art or process of examination by the stethoscope.

An apparatus for examining the interior of the mouth.

An optical toy similar to the phenakistoscope. See Phenakistoscope.

The character or characteristic of a sycophant. Hence: -