<< < -es -it -sc 201 951 abe abs abs aca acc acc aco act ada adh ado aer aft air Alf alg alk alp Alt alt amb ana And ang ani ann ant ant ant apo app app Apu arc arg Arn art ass ast ast ast atm ato att aur aut avo azi bac bal bar bar bat Bea Bel bet bia big bin bio Bir bla bla blo Blu Bok boo bou box bre Bri bro bur cal cal Can cap car Car cat cau cel cen cen cha Cha cha che Chi chr cir cir civ cla clo clo CMB coa coe coh col col col com com com com com com com com Com con con con con con con con con con con con con coo cor cor cor Cos cos cos cou cou cra cri cro cry cul cur cyc D l dar dat day dea dec dec dec def def deg Del Den dep der det deu dew dic dif dif dil dip dir dis dis dis dis dis diu dog Dop dou Dra Dsc dus dwa dyn Dys Ear ecc eco edg egg Ein Ela ele ele ele ele ell eme emp enc eng ent epi equ equ equ eru eth Eur eve exa exc exe exi exo exp ext ext ext fab fai Fan fea fem fer fie fil fir fir fla fli flu foc for for for fra fre fre fri fun fuz gal gal gal Gam gau Gau gen geo geo geo geo Gib glo gov gra gra gra gra gre gro Gui H-a hal Ham har Hay hea hei hel Hel her het hie hig hoa hom hor hot Hub Hug hur hyd hyd hyl hyp ice ide ima ima imp imp inc inc ind ine inf inf inf ing inn ins ins int int int int int int int int inv inv ion iro Isl iso iso Jab jet Jov Jup Kar Kep kil Kip Kra Lag Lam Lan Lar las law lea Leg Leo lev lig lim lin lin lin lit loc loc log Lor low lum lun lun Lym Mac mag mag mag mag mag mai Mal map mas mas mat Mau mea mea med Men mer Mes met met MHD mic mid mil min mir mix mod mol mom moo mor mov mul mur n-b nan nat nea neg Ner neu new New NGC noc nom non non nor nor nuc nuc nul nut obj obl obs occ oct off old one ope opp opt opt orb ord org Ori osc oth ove Owl P-s Pal par par par par Pas pat pec pen per per per per per Pha pha pho pho pho phy pie pix Pla pla pla pla Pli Poi pol pol pol pol por pos pos pow pre pre pre pre pri pri pri pro pro pro pro pro pro pro pub pul pyc qua qua qua qua qui rad rad rad rad rad rad rai ran rar Ray rea Rea rec rec red red ref ref reg rel rel rel ren res res res res ret rev Ric rig rin roc roo rot rot rur S5- Sal sat sca sca sch sci Scu sec sec sed sel sel sem seq set sha she sho sid sie sil sim sin sit sky slo sno sod sol sol sol sol son sou spa spa spe spe spe spe sph spi spo squ sta sta sta sta ste ste ste Sti sto str str sub sub sub sul sup sup sup sup sur sur syl syn sys tal Tay tel ten ter tex the the the the Tho thr tid tim Tit too Tor tra tra Tra tra Tra tri Tri tru tub tur two Typ ult ult unc uni uni uni upl ura uti val var vec vel ver Ver vie vir vis vis vol W-R war wav wav wea Wei wha wid win WN3 Wol wri xen yok zen zij > >>
Sag-e Kucak (#)
Fr.: Petit Chien
The Lesser Dog. A small → constellation in the equatorial region of the northern sky at approximately R.A. 7h 30m, Dec. +5°. It hosts the bright star → Procyon. Abbreviation CMi, genitive form Canis Minoris.
Canis Minor, from canis "dog" → Canis Major; L. minor "lesser, smaller," from PIE base *min- "small" (cf. Gk. meion "less, lesser," Skt. mi-, minati "to diminish."
Sag "dog," → Canis Major; kucak "small," from Mid.Pers. kok, kotak, kotah "small, short; child."
Canon der Finsternisse
fehrest-e gerefthâ (#)
Fr.: Canon des éclipses
Canon of Eclipses. The most famous catalogue of solar and lunar eclipses. Published in 1887 by Theodor von Oppolzer, the catalogue contains the elements of all solar and lunar eclipses between 1208 BC and 2161 AD. It has been superseded by the calculations of F. Espenak and J. Meeus, Five Millennium Canon of Solar Eclipses: -1999 to +3000 (NASA/TP-2006-214141) and Five Millennium Canon of Lunar Eclipses: -1999 to +3000 (NASA/TP-2009-214172).
Canon, from L. canon, from Gk. kanon "a straight rod, a measuring rod, rule;" Ger. Finsternisse, plural from finsternis "eclipse; darkness," from finster "dark," M.H.G. vinster, O.H.G. finstar "dark" + -nis suffix forming abstract nouns, → -ness.
1) General: Pertaining to, established by, or conforming to a
canon, i.e. a law or a general rule (especially in ecclesiastical matters).
M.M. canonicalis, from canonic(us), from L. canon, from Gk. kanon "a straight rod, a measuring rod, rule " + alis, → -al.
Hanjârvâr, from hanjâr "a mason's rule, any string or instrument used by builders in laying stones straight; rule, law, way, custom; a norm" + -vâr suffix meaning "having, endowed with; like, in the manner of."
degaršod-e hanjârvâr, degareš-e ~
Fr.: changement canonique
A periodic change in one of the components of the orbit of a celestial object.
Fr.: coordonnées canoniques
Any set of generalized coordinates of a system together with their → conjugate momenta.
Fr.: correlation canonique
The highest correlation between linear functions of two data sets when specific restrictions are imposed upon them.
Fr.: équation canonique
The most general form of an equation.
Fr.: forme canonique
Fr.: IMF canonique
tarz-e hanjârvâr, model-e ~
Fr.: modèle canonique
A model for the formation of the Moon according to which the → Moon results from a giant impact. A Mars-sized body (often referred to as → Theia) obliquely collided with the proto-Earth at the mutual escapee velocity. This specific giant impact is often used to represent all giant impacts. A recent advanced version of the canonical model is called → giant impact hypothesis.
Fr.: moment cinétique canonique
Same as → conjugate momentum.
canonical upper limit
hadd-e zabarin-e jerm
Fr.: limite supériure canonique
A physical upper mass limit near 150 Msun assumed for the stellar → initial mass function (Kroupa et al. 2012, arXiv:1112.3340).
canonically conjugate variable
vartande-ye hanjârvârâné hamyuq
Fr.: variable canoniquement conjuguée
A generalized coordinate and its → conjugate momentum.
Canopus (α Carinae)
Soheyl (#), Agast (#), Parak (#)
The brightest star in the → constellation → Carina and the second brightest star in the sky with a → visual magnitude -0.72. Also called α Carinae and HD45348. Canopus is not visible from latitudes above 37 degrees north. It is an evolved star, a → supergiant of type F0 II (Smiljanic et al., 2006, A&A 449, 655). Canopus lies 310 → light-years (96 → parsecs) from the Solar System; this is based on its → Hipparcos → parallax measurement of 10.43 mas (5% accuracy). From this distance a → luminosity 13,300 times that the → solar luminosity is derived, and a radius of 73 times solar, in agreement with the → angular size (6.95 ± 0.15 mas) measured using → interferometry (Cruzalèbes et al., 2013, arXiv:1306.3288). These observations also yield an → effective temperature of about 7400 K. The star's mass is estimated to be about 8 Msun. Canopus possesses an extremely hot magnetically heated → corona. Canopus's corona is some 10 times hotter than the → solar corona and produces both observable → X-rays and → radio emission. According to calculations by J. Tomkin (1998, Sky & Telescope 95, 59), using → Hipparcos data, Canopus has, in the past, been the brightest star during three periods: from 3,700,000 to 1,370,000 years ago, from 950,000 to 420,000 years ago, and from 160,000 to 90,000 years ago. It will, once more, become the brightest star in 480,000 years and will remain such for 510,000 years.
Canopus, from Gk. kanobos, perhaps from Coptic language Kahi Nub "golden earth."
Soheyl, from Ar. Suhail.
1) A covering for the head.
M.E. cappe; O.E. cæppe "hood, head-covering," from L.L. cappa "a cape, hooded cloak," possibly shortened from capitulare "headdress," from L. caput "head;" cf. Pers. Lori kapu "head," kapulek "skull, middle of the head;" Kurd. Kurmanji qaf "head;" Pashto kaparay "skull;" Farâhâni kapâl "a blow on the head."
Kolâhak, diminutive of kolâh "cap;" maybe related to PIE base *kel- "conceal;" cf. L. celare "to hide, conceal," occulere "to dissimulate;" Gk. kalyptein "to cover," kalia "hut, nest;" Skt. cala "hut, house;" Goth. hilms "helmet," huljan "cover over," hulistr "covering;" E. hull "seed covering," from O.E. hulu, from O.H.G. hulla, hulsa; O.E. hol "cave;"
The ratio of the charge Q on either conductor of a → capacitor to the → potential difference, or → voltage V between the conductors. It is given by C = Q/V. Capacitance can also be described by the relation: C = ε0A/d, where ε0 is the → permeability of free space, A is the area of one capacitor plate, and d is the distance between the capacitor plates. Capacitance is measured in → farads or, for convenience, in microfarads.
Gonjâyi, from gonjâ "able to hold," from gonjidan→ capacity + -yi noun suffix.
A device for storing electric charge. The simplest sort of capacitors consists of two parallel, conductive plates having equal amounts of opposite charges and separated by a → dielectric material. When a capacitor is fully charged there is a → potential difference between its plates. The larger the area of the plates and/or the smaller the separation between them the greater will be the charge that the capacitor can hold and the greater will be its → capacitance. The actual charge Q on the plates of a capacitor is given by: Q = C . V, where C is the capacitance and V the → voltage.
The ability to receive or contain.
From M.Fr. capacité, from L. capacitatem, from capax "able to hold much," from capere "to take, grasp."
Gonjâyeš "capacity, holding, containing," from gonjdan "to be contained; to hold exactly; to be filled;" Mid.Pers. winj- "to be contained;" Proto-Iranian *uiac-/*uic-; cf. Skt. vyac- "to contain, encompass," vyás- "extent, content, extension;" L. uincire "to bind."
Capella (α Aurigae)
Bozbân (#), Ayyuq (#)
The sixth brightest star in the sky, Capella lies in the Northern Hemisphere → constellation → Auriga. Also known as HD 34029 = HR 1708 = HIP 24608. Capella lies about 42 → light-years away (13.159 ± 0.015 → parsecs). Its → apparent visual magnitude is V = 0.07. A → spectroscopic binary, it consists of a pair of G8 III and G0 III → giants with an → orbital period of 104 days. The more evolved former/→ primary star has a slightly larger mass and luminosity (2.6 Msun and 79 Lsun) than that of the latter/→ secondary star (2.5 Msun and 73 Lsun). The primary is a typical late G giant presumably in the He-burning stage (→ red clump), which is lithium deficient and a slow rotator as other normal giants. In contrast, the secondary is a fast rotator (projected rotational velocity is v_e sin i ~ 35 km s-1) with high stellar activity (characterized by conspicuous chromospheric emission lines in UV) and shows a remarkably strong Li line, which indicates that the initial Li content is almost retained without being diluted (the surface Li composition for the secondary is ~100 times higher than that for the primary). That is, the secondary star belongs to the unusual group of Li-rich giants (see, e.g., Takeda et al., 2018, ApJ 862, 57 and Torres et al., 2015, ApJ 807, 26).
From L. capella "little she-goat," diminutive of caper "goat."
Bozbân "goat keeper" (Biruni, A.D. 973-1048, in his Tafhim),
from boz, → goat, + -bân
prefix denoting "keeper."
Same as → capillary action.