Sentence examples for standard candle from inspiring English sources
noun
Any astronomical object of known absolute magnitude. Its distance can then be calculated from its apparent magnitude.
Such a star is termed a "standard candle".
Scientists determined this by using something called a 'standard candle.' A standard candle is an astrophysical object that has some characteristic that allows us to determine its total luminosity, even though it's very far away.
These stars, cepheids, are considered "standard candle" stars of known brightness that can serve as yardsticks for cosmic distances.
Used as a standard candle, these objects have consistently given Dr. Sandage and his collaborators Hubble Constants of about 50.
This unit of luminous intensity is also called the standard candle, or candela, one lumen per steradian.
A standard candle can be identified by means of its spectrum or the pattern of regular variations in brightness.
Standard candles of variable stars called 'cepheids' were used to discover the expanding universe, and standard candles of exploding stars called 'supernovae' were used to discover the accelerating universe.
Recently, measuring cosmology with GRBs has been studied widely since several intrinsic standard candle-like correlations were proposed.
Then, they observed other standard candles in these galaxies.
Since their discovery 50 years ago astronomers have dreamed of using them as standard candles.
So far, standard candles have done it with precisions of 2 3%.
