Blueshift
a shift toward shorter wavelengths of the spectral lines of a celestial object, caused by the motion of the object toward the observer.
noun
a shift in the spectral lines of a stellar spectrum towards the blue end of the visible region relative to the wavelengths of these lines in the terrestrial spectrum: a result of the Doppler effect caused by stars approaching the solar system Compare redshift
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fanciful; impractical: blue-sky ideas. (especially of securities) having dubious value; not financially sound: a blue-sky stock. Contemporary Examples Handcuffs, Ropes, and an Open Window: How I Escaped an Unthinkable Childhood Genyfer Spark January 28, 2012 Choking Back Tears, Thousands of Cops Honor Fallen Officer Ramos Michael Daly December 27, 2014 The Ballad of Johnny France […]
- Blue-sky-law
a law regulating the sale of securities, real estate, etc., especially such a law designed to prevent the promotion of fraudulent stocks.
- Blue-sky-software
blue sky software
- Blue-spirea
a grayish, hairy, eastern Asian shrub, Caryopteris incana, of the verbena family, having clusters of showy, blue or bluish-purple flowers.
- Blue-spot
blue spot Historical Examples Hans Brinker Mary Mapes Dodge Swatty Ellis Parker Butler Peck’s Uncle Ike and The Red Headed Boy George W. Peck Principles of Decorative Design Christopher Dresser Sunday-School Success Amos R. Wells America’s War for Humanity Thomas Herbert Russell Children of the Desert Louis Dodge Life in the Confederate Army Arthur Peronneau […]