Fr.: précision, spécification
1) The act of specifying.
Verbal noun of → specify.
radebandi-ye binâbi (#)
Fr.: classification spectrale
A system that assigns a → spectral type to a star according to characteristics of its spectrum. The earliest attempt to divide stars on the basis of their spectra was the → Secchi classification in the 1860s. This scheme paved the way for the → Harvard classification that led to the current → Morgan-Keenan classification of spectral types. In the Harvard system stars were originally thought to follow an evolutionary sequence from the "early" O and B types to the "late" K and M types. Although this is now known to be wrong, the terms → early-type star and → late-type star are still in use. In the Morgan-Keenan system stars are classified as type O, B, A, F, G, K, or M in order of decreasing → effective temperature, and each type further subdivided into subclasses from 0 (hottest, except for → O-type stars) to 9 (coolest). They are also accompanied by a → luminosity class. In the late 1990s, spectral types L and T were added to the sequence to accommodate the coolest stars and → brown dwarfs (with class Y reserved for the coolest brown dwarfs of all, as yet unobserved).
A layered structure of sedimentary rocks in which the individual layers can be traced a considerable distance. The layers can be caused by many differences which include materials of different composition, color, grain size or orientation.
Strati-, from → stratum + -fication from L. -ficare "to do, make."
Ciné, → stratum + bandi, from bastan "to bind, shut; to contract, get, acquire; to coagulate," (Mid.Pers. bastan/vastan "to bind, shut," Av./O.Pers. band- "to bind, fetter," banda- "band, tie," Skt. bandh- "to bind, tie, fasten," PIE *bhendh- "to bind," cf. Ger. binden, E. bind, → band).
Fr.: classification de Tholen
A fundamental system for the classification of → asteroids based on → albedo and → spectral characteristics. The Tholen scheme includes 14 types with the majority of asteroids falling into one of three broad categories, and several smaller types. → C-type asteroid, → M-type asteroid, → S-type asteroid.
David J. Tholen (1984) Ph.D. thesis, University of Arizona; → classification.
tesk-e zamân, ~ vaqt
Fr.: attribution de temps de télescope
The assignment of telescope time by an expert panel to proposals after evaluating the merits of the observation projects.
The act or process of truncating, as → disk truncation.
Verbal noun from → truncate.
1) The process of unifying or uniting; union.
Verbal noun of → unify.
The act of verifying. The state of being verified.
Verbal noun of → verify.