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'Red shift' is a key concept for astronomers. The term can be understood literally - the wavelength of the light is stretched, so the light is seen as 'shifted' towards the red part of the spectrum. Something similar happens to sound waves when a source of sound moves relative to an observer.
En física y astronomía, el corrimiento al rojo, acercamiento hacia el rojo o desplazamiento hacia el rojo (en inglés: redshift) es un fenómeno que ocurre cuando la radiación electromagnética que se emite o refleja desde un objeto, normalmente la luz visible, aparece desplazada hacia el rojo al final del espectro electromagnético.
In physics, a redshift is an increase in the wavelength, and corresponding decrease in the frequency and photon energy, of electromagnetic radiation (such as light). The opposite change, a decrease in wavelength and increase in frequency and energy, is known as a blueshift, or negative redshift.
24 de ene. de 2021 · Redshift is a change in the frequency of light due to the motion of a source away from or toward Earth. Learn how astronomers use redshift to study the universe's history, structure and evolution, and see examples of high-redshift galaxies and quasars.
20 de abr. de 2024 · Redshift, displacement of the spectrum of an astronomical object toward longer (red) wavelengths. It is attributed to the Doppler effect, a change in wavelength that results when an object and an observer are in motion with respect to each other. Learn about redshift in this article.
4 de jun. de 2018 · Nature Astronomy - A review of the various techniques to obtain photometric redshifts, from template-fitting to machine learning and hybrid schemes, and a description of the latest results on...
What is redshift in astronomy? - BBC Sky at Night Magazine. Since the Big Bang, light has been travelling across space as the Universe has grown in size, causing the wavelength of the light to be stretched.
