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How Relativity say about redshift in terms of curvature?
Redshift in relativity refers to the observed phenomenon of light from distant objects appearing to have a longer wavelength, or "shifted" towards the red end of the spectrum. This is due to the expansion of the universe causing a stretching of the light waves as they travel through space.
According to the theory of relativity, the observed redshift is a result of the curvature of space-time caused by the presence of massive objects. This curvature causes the light to follow a curved path, resulting in a longer apparent wavelength.
Yes, redshift can be used as a measure of the curvature of space-time. The amount of redshift observed in the light from a distant object can provide valuable information about the distribution of matter and the overall geometry of the universe.
The observed redshift in light from distant objects is a direct result of the expansion of the universe. As space expands, the wavelengths of light are stretched, causing the redshift. This relationship is known as Hubble's law.
No, redshift can vary for different objects in the universe depending on their distance and relative motion. Objects that are further away will generally have a higher redshift, as the expansion of the universe has had more time to stretch the light waves. Additionally, the motion of an object towards or away from the observer can also affect the observed redshift.