A tributary i just did the quiz
Increasing wavelength is an indication of a Doppler shift caused by an object moving away from the viewer. Longer wavelengths (of the visible spectrum) are redder, shorter wavelengths are bluer. Objects moving away from you have a red shift, objects moving toward you have a blue shift.
An increase in the spectral line's wavelength causes it to move towards the red end of the visible light spectrum, signaling that the object is moving away from the observer. This phenomenon is known as redshift in the Doppler effect.
When the wavelength of spectral lines emitted from an object increases, it moves towards the red end of the visible light spectrum, which illustrates a concept known as redshift. This is a result of the object's motion relative to Earth. If the object is moving away from us, the light's wavelength appears longer, causing a shift towards the red end of the spectrum. This phenomenon is a manifestation of the Doppler effect, originally explained by Christian Doppler in 1842.
This principle can be used in astronomy to deduce the motion of stars and galaxies relative to us. For instance, if a star's spectral lines shift towards the red end of the spectrum, we can infer that the star is moving away from us. Conversely, if the lines shift towards the blue end, this suggests that the star is moving towards us.
#SPJ3