A suffix meaning "drawn, written," specialized in meaning to indicate the instrument rather than the written product of the instrument.
A suffix, from Gk. -graphos "(something) drawn or written, one who draws or writes," from graphein "to draw, write."
A suffix from the stem of negârdan, negâštan "to paint, write," → graph.
An adjective relating to → -graph.
A combining form denoting a process or form of drawing, writing, representing, recording, describing, etc., or an art or science concerned with such a process. Examples: geography; orthography; → photography; → radiography; → selenography; → tomography.
The study of the surface features of Mars; the geography of Mars.
Areography, from Gk. Ares "Mars" + → -graphy.
Bahrâm-negâri, from Bahrâm "Mars" + -negâri→ -graphy.
A photographic instrument with great light gathering power which is used to photograph a large field in a single exposure.
Astrograph, from → astro- + → graph.
axtar-šidnegâri, šidnegâri-ye axtari
The photography of stars, other celestial bodies, and stellar fields.
→ astro-, → photography.
A very accurate instrument that measures, indicates, or graphically records time intervals such as the duration of an event.
Chronograph, from Gk. khronos "time" + → -graph.
Gâhnegâr, from gâh "time" + negâr, → -graph.
Fr.: graphe complet
In → graph theory, a simple graph with an → edge between every pair of → vertices.
Fr.: graphe connecté
In → =graph theory, a graph if for every pair of distinct vertices there is a path.
tâjnegâr (#), hurtâjnegâr (#)
An instrument which, when used in a telescope, produces an artificial eclipse, permitting the study of the → solar corona without a total eclipse of the Sun. It was invented in 1930 by the French astronomer Bernard Lyot (1897-1952).
Of, or relating to → coronagraphy.
→ coronagraphy; → -ic..
A technique used to observe a relatively dim object (like an → exoplanet) lying close to an outshining bright source (such as star). This is done by blocking the bright object, in the same way the → solar corona is observed using a → coronagraph.
→ coronagraph + suffix -y.
The branch of → cosmology concerned with the dimensional structures of the → Universe and their measurement.
binâbnegâr bâ pâšeâš-e chalipaayi, ~ ~ ~ xâji
Fr.: spectrographe à dispersion croisée
A spectrograph that utilizes cross dispersion.
→ cross; → dispersion; → spectrograph.
The science of forms, properties, and structure of crystals.
Fr.: graphe orienté
In → graph theory, a graph with → directed edges. Also calle → digraph.
Fr.: tomographie Doppler
A technique using a series of Doppler-shifted line profiles at different orbital phases in cataclysmic variable stars (CVs) to image the compact system in the light of a particular emission line. Although developed for CVs, the method has wider applications. An alternative method is → eclipse mapping.
→ Doppler effect; → tomography.
binâbnegâr-e narde-yi (#)
Fr.: spectrographe à échelle
A spectrograph that uses an echelle grating to disperse the light.
→ echelle grating; → spectrograph.
Fr.: graphe vide
In → graph theory, a graph with any number of → vertices which do not have → edges.
Of or pertaining to → geography.