Have astronomers ever observed a violet shift like they have blue shifts and red shifts?

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What is the phase shift when light enters from denser medium to

天文学家曾观测到红移和蓝移，那么是否存在可观测的

Why did industrialization begin shifting from cloth production to

Why Substitution Mutation Is Not Called As Frame Shift Mutation?

Astronomical Redshift Imaging the Universe - The University of Iowa

Have astronomers ever observed a violet shift like they have blue

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Explain the terms Hypsochromic (blue) shift and Bathochromic (red

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