what does luminosity mean in science

Found inside – Page 114A Colloquium Sponsored by the U.S. National Science Foundation and the Korean Science and Engineering Foundation, Seoul and ... the relative " luminosities ” are really relative fluxes observable for a prescribed inclination and an arbitrarily chosen orbital phase . ... definition . Note that a published estimate of third light should be in terms of a clearly stated , observationally meaningful unit , such as ... Found inside – Page 345Figure 1 (right) shows that the luminosity does indeed recover after the ... The dotted streamlines mean the flow convergent on the top and divergent ... Found inside – Page 813The consequences are investigated for substituting the mass luminosity - mean molecular weight relation of stellar structure theory in place of the ... Found inside – Page 276The point is to find some reagent which does not affect Shewing the Mean Reading of the Barometer , Mean Tem- the ... contributors which have lately appearPeriods of Luminosity Mean of ed , but , as the process they state differs from that I of ... Found inside – Page 249The change in mean quasar luminosity represents an evolution in the mean ... Ideas are currently emerging that link the evolution of quasars with the ... Found insideWhat did this mean? Could it have meant that the angel was either more luminous and outstanding than the brightness of the sun or darkened and contrasted to ... Found inside – Page 44At higher potentials the optimum distribution of electron velocities will be attained in shorter mean free paths , or at higher ... The preliminary investigation previously mentioned indicated a lower velocity as the luminosity moved away from the ... Found inside – Page 114We will refer to this predicted astrometric variability of low luminosity AGN ... 2 Observing the AGN Dance In order to calculate the mean distance between ... Found inside – Page 312It differs somewhat for different individuals and is difficult to Luminosity A 0.5 Violet Green Red 0.4 0.6 0.7 Wave length ( microns ... This last definition as stated is vague and difficult to apply , since there are no definite limits to visible light . Found inside – Page 177An Integration of Sciences Allen J. McMahon. stellar cluster ... However , luminosity depends on mass , mean molecular weight , and opacity in the relation : - E = ( 10 . ) * f 4 , x ... 4 ) This assumes that the sun will brighten from its present ( Sec . Found inside – Page 271Both R.A. and Decl . tend to increase as fainter stars are used , which he explains to be due to a larger proportion of the ... an astrophysical constant , about one magnitude fainter than the mean brightness of the 25 brightest stars in the cluster . Found inside – Page 12Our eyes do not have the same sensitivity for all colors. ... The mean of green and red luminosity has been transformed into yellow, which may indicate the ... Found inside – Page 119The fluctuating sensation will also depend on the reciprocal of the mean number of the elementary spots or streaks ... When the wire gauze is introduced in the field of vision , those elementary streaks of luminosity of which the trends are ... Found inside – Page 101By today's standards, luminosities were scarcely impressive, ... typical of diffusion pumps, the mean free path for ionization would be about 300 km, ... Found inside – Page 227Thus defined , these photometric quantities have meaning even when the conditions of observation are not standard . The direct correlation of these photometric quan - tities with the brightness attribute of visual sensation is not assured unless ... Found inside – Page 155The resultant curves are called scotopic luminosity curves . To summarize , a consistent , workable interpretation of the meaning of ( 2 ) requires an ... Found insideNote that since the mean mass of a cluster is obtained from its gravity, ... In section 3.3 we outline the determination of the mean luminosity density. Found inside – Page 531Quasar luminosities are enormous, and arise from tiny regions. ... So being bright in the radio does not simply mean that they are very cold objects. Found insideWhat do we mean by an 'enhancement of rarefaction'? ... When matter is rarefied enough, I finally come to a point where I obtain brightness as such. Found inside – Page 7They are Our knowledge of physical conditions on the characterized by small dimensions and high mean planets is ... referred to the mean distance of permanent luminosity of the night sky . the planet with the elimination of the effect of We ... Found inside – Page 496(b) By this definition, which Solar System planets would be in the Sun's HZ ... Approximate the star's luminosity to vary as the fourth power of the star's ... Found inside – Page 250Because my definition of the scientific method is to search for the best ... star will see their host star as having approximately the same brightness as we ... Found inside – Page 159159 lamp is brought to such a value that the luminosities of lighting work generally might well devote attention to the the ... Here , the mean effect over the whole of the surfaces viewed is judged , and as long as the dials are small there should ... Found inside – Page 54By definition, nuclear fusion involves the combining of several atoms of ... relative surface temperature and greater relative luminosity are circled. Found inside – Page 276The point is to find some reagent which does not affect Shewing the Mean Reading of the Barometer , Mean Tem- the ... have lately appearPeriods of Luminosity Mean of ed , but , as the process they state differs from that I of Phosphorus . Found inside – Page 123Observations are still taken , and I hope to be able to There thus appears an urgent necessity for some means give results ... ticulars of the process , so that any one interested in the Periods of Luminosity Mean of matter can try it for himself . Found inside – Page 50Koopmans , an econometrician , is suggested , although it would still be credited with seeing the broad implica - much too small to bring ... The physical mean - tributed to the momentum imparted to ing of the constant is unclear , and it di - all matter in the “ big bang ... ball could be thrown hard The distance estimates are based on enough to escape the earth ' s gravita - measurements of luminosity , and it ... Found insideThe variations in brightness of a cepheid variable are perfectly regular, ... the period of a cepheid variable andits mean intrinsic brightness. Found inside – Page 17For the sun this “main sequence" stage will last for ... similar stars it is expected that the total luminosity (total radiated power) emitted from the sun ... Found inside – Page 132By the visibility of radiant energy is meant the ratio of luminosity to radiant power ... It is obvious from the meaning of the term that the measurement of ... Found inside – Page 759parameters in this model are the mixing ratios of SO2 at the cloud top ( 40 mbar level ) , and the scale height of SO2 at the same altitude . Found inside – Page 14Supernovae 31.55 + 0.25 unweighted mean : 31.67 + 0.05 weighted mean : 31.71 + 0.08 ... Their model luminosities are the same to within 0.12 € 0.21 mag . Found inside – Page 123Observations are still taken , and I hope to be able to There thus appears an urgent necessity for some means give results ... process , so that any one interested in the Periods of Luminosity Mean of Mean of Mean of matter can try it for himself . Found inside – Page 132Cepheid variables are giant stars thousands of times as bright as our sun and therefore easy to locate wherever they occur . ... Figure 5–15 shows the relation between mean brightness and period for the 25 stars reported in Miss Leavitt's first ... Found inside – Page 2634These results are consistent with numerical models of partially relaxed ... Other properties of the nuclei do not seem to be dependent on luminosity . Found inside – Page 12The luminosity is well approximated by the formula [18] = N 1 N 2nbunchf 4πσx σy S, (3) L where N1 and N2 are the number of particles in the two colliding ... Found inside – Page 185space instrument : from design to science By THIERRY APPOURCHAUX European ... 91405 Orsay Cedex , France The Luminosity Oscillations Imager ( LOI ) is ... Found inside3. What do the words absolute and visual mean in the definition of absolute visual magnitude? 4. What does luminosity measure that is different from what ... Found inside – Page 12327 Mean of nection between ozone and the phosphorescence of the , from the concentration of the bulk through the loss of moisture . Observations are still taken , and I hope to be able to There thus appears an urgent necessity for some means give results from a larger area . ... ticulars of the process , so that any one interested in the Periods of Luminosity Mean of Mean of matter can try it for himself . 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