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  2. Redshift - Wikipedia

    en.wikipedia.org/wiki/Redshift

    Redshift (and blueshift) may be characterized by the relative difference between the observed and emitted wavelengths (or frequency) of an object. In astronomy, it is customary to refer to this change using a dimensionless quantity called z .

  3. Amazon Redshift - Wikipedia

    en.wikipedia.org/wiki/Amazon_Redshift

    Amazon Redshift is a data warehouse product which forms part of the larger cloud-computing platform Amazon Web Services. [1] It is built on top of technology from the massive parallel processing (MPP) data warehouse company ParAccel (later acquired by Actian ), [ 2 ] to handle large scale data sets and database migrations . [ 3 ]

  4. Hubble's law - Wikipedia

    en.wikipedia.org/wiki/Hubble's_law

    The discovery of the linear relationship between redshift and distance, coupled with a supposed linear relation between recessional velocity and redshift, yields a straightforward mathematical expression for Hubble's law as follows: = where v is the recessional velocity, typically expressed in km/s.

  5. Gravitational redshift - Wikipedia

    en.wikipedia.org/wiki/Gravitational_redshift

    where = is the gravitational redshift, is the optical clock transition frequency, = is the difference in gravitational potential, and denotes the violation from general relativity. By Ramsey spectroscopy of the strontium-87 optical clock transition (429 THz, 698 nm) the group determined the gravitational redshift between the two optical clocks ...

  6. Amazon Kinesis - Wikipedia

    en.wikipedia.org/wiki/Amazon_Kinesis

    Amazon Kinesis is a family of services provided by Amazon Web Services (AWS) for processing and analyzing real-time streaming data at a large scale. Launched in November 2013, it offers developers the ability to build applications that can consume and process data from multiple sources simultaneously. [2]

  7. Tired light - Wikipedia

    en.wikipedia.org/wiki/Tired_light

    Tired light was an idea that came about due to the observation made by Edwin Hubble that distant galaxies have redshifts proportional to their distance.Redshift is a shift in the spectrum of the emitted electromagnetic radiation from an object toward lower energies and frequencies, associated with the phenomenon of the Doppler effect.

  8. More work, same salary. How employees should respond to a ...

    www.aol.com/more-same-salary-employees-respond...

    As the labor market cools, data suggests more workers are getting "dry promoted" and taking on more responsibilities or a new title for the same pay.

  9. Reionization - Wikipedia

    en.wikipedia.org/wiki/Reionization

    This occurred between 150 million and one billion years after the Big Bang (at a redshift 20 > z > 6) [3]: 150 At that time, however, matter had been diffused by the expansion of the universe, and the scattering interactions of photons and electrons were much less frequent than before electron-proton recombination. Thus, the universe was full ...