SPECTROELECTRIC
Spec`tro*e*lec"tric, a.
Defn: Pert. to or designating any form of spark tube the electric discharge within which is used in spectroscopic observations.
SPECTROGRAM
Spec"tro*gram, n. [Spectrum + -gram.] (Physics)
Defn: A photograph, map, or diagram of a spectrum.
SPECTROGRAPH Spec"tro*graph, n. [Spectrum + graph.] (Physics) (a) An apparatus for photographing or mapping a spectrum. (b) A photograph or picture of a spectrum. — Spec`tro*graph"ic (#), a. —Spec`tro*graph"ic*al*ly (#), adv. —Spec*trog"ra*phy (#), n.
SPECTROHELIOGRAM
Spec`tro*he"li*o*gram`, n. [Spectrum + heloi- + -gram.]
(Astrophysics)
Defn: A photograph of the sun made by monochromatic light, usually of the calcium line (k), and showing the sun's faculæ and prominences.
SPECTROHELIOGRAPH
Spec`tro*he"li*o*graph, n. (Astrophysics)
Defn: An apparatus for making spectroheliograms, consisting of a spectroscopic camera used in combination with a telescope, and provided with clockwork for moving the sun's image across the slit. — Spec`tro*he`li*o*graph"ic (#), a.
SPECTROLOGICAL
Spec`tro*log"ic*al, a.