blue shift


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blue shift

or

blueshift,

in astronomy, the systematic displacement of individual lines in the spectrumspectrum,
arrangement or display of light or other form of radiation separated according to wavelength, frequency, energy, or some other property. Beams of charged particles can be separated into a spectrum according to mass in a mass spectrometer (see mass spectrograph).
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 of a celestial object toward the blue, or shorter wavelength, end of the visible spectrum. The amount of displacement is a function of the object's relative velocity toward the observer. Most observed blue shifts are the result of the Doppler effectDoppler effect,
change in the wavelength (or frequency) of energy in the form of waves, e.g., sound or light, as a result of motion of either the source or the receiver of the waves; the effect is named for the Austrian scientist Christian Doppler, who demonstrated the effect
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. The blue shift is the opposite of the red shiftred shift
or redshift,
in astronomy, the systematic displacement of individual lines in the spectrum of a celestial object toward the red, or longer wavelength, end of the visible spectrum. The effect was discovered by V. M. Slipher of Lowell Observatory.
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. Blue shifted celestial bodies are quite rare. Of the billions of known galaxies, only about 100, including the AndromedaAndromeda,
in astronomy, northern constellation located to the NE of Pegasus and to the S of Cassiopeia. Its brightest star, Alpheratz (Alpha Andromedae), marks the northeast corner of the Great Square in Pegasus.
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 galaxy, are blue shifted.

blue shift

[′blü ‚shift]
(astronomy)
A displacement of lines in the spectrum of a celestial object toward shorter wavelengths, indicating motion of the object toward the observer.
References in periodicals archive ?
It can be also observed that all the prepared PVA/CdS nanocomposite films showed a blue shift due to the increase in their band gap energies (2.
Otherwise (source further away from body than receiver), the light undergoes a blue shift.
The magnitude of the blue shift decreased as a function of glucose concentration when glucose approached 20 mmol/L (3).
Capping and encapsulation of nm crystallites in the process produce a blue shift in the luminescence.
Figure 5 indicates that the blue shift produced by the di-10-ASPPS probe was significantly smaller in the evanescent wave mode than in the fluorimeter.
In addition, Richstone currently serves on the board of directors at Blue Shift Technologies and is the non-executive Chairman of the Entrepreneurial Resources Group.
Shelley has a beautiful, blue shift dress that Grace and I have borrowed for interviews, dates and posh functions, then washed so many times it's now too short for her
It was such a privilege to be invited to talk to the students at the Oxford Union," said Katherine, who attended the event wearing a deep blue shift dress by Kate Spade and her blonde hair in a slick pony tail.
Both girls tried on a tie-dyed maxi dress and Mairi-Kate tried on a blue shift dress.
9, show that an increase in temperature results in a blue shift of the C = O band from 1733 to 1734 [cm.
The first night saw The Anne Duggan Band take to the stage upstairs while The Blue Shift are tonight's headliners with Treebeard the main act tomorrow evening.
Ligand binding analyses showed that the Hp-FAR-1 bound the fluorophore-tagged fatty acid DAUDA, producing a significant blue shift in its peak emission, indicative of a highly apolar protein binding site.