Doppler Effect on Light: Understanding Blue Shift in Starlight & X-ray Formation

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When a star moves toward Earth, its emitted light experiences blue shift, resulting in a decrease in wavelength. If violet light with a wavelength of 400 nm is blue shifted to 1 nm, it transitions into the X-ray spectrum. This phenomenon demonstrates how the Doppler effect on light can lead to significant changes in the observed wavelength. Consequently, the light received on Earth from such a star would indeed be classified as X-rays. Understanding this effect is crucial for astrophysics and the study of stellar movements.
kjamha
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If a star races toward Earth the emitted light will be blue shifted. If the violet light produced from the star has a wavelength of 400 nm and it is blue shifted to 1 mn, does this light now exist as x-rays (on earth)?
 
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Yes, the light received at Earth will fall in the X-Ray band.
 

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