The hydrogen Balmer line Hβ has a wavelength of 486.1 nm. It is shifted to 579.8 nm in a quasar's spectrum. What is the redshift of this quasar? (Hint: What is Δλ?)

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The hydrogen Balmer line Hβ has a wavelength of 486.1 nm. It is shifted to 579.8 nm in a quasar's spectrum. What is the redshift of this quasar? (Hint: What is Δλ?)

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