The correct answer is: Light wave frequencies increase as an object moves toward the observer.
Blueshift refers to a shift in the observed wavelengths of light towards the shorter, bluer end of the spectrum. This phenomenon occurs when an object emitting light waves is moving towards the observer. As the object approaches the observer, its motion compresses the wavefronts, causing an increase in the frequency of the observed waves. Since frequency and wavelength are inversely related, an increase in frequency leads to a decrease in wavelength. Therefore, the light waves appear blueshifted. Scientists observe blueshift in certain stars to determine their motion towards the observer, which provides valuable information about the velocity and dynamics of these celestial objects.
Why do scientists observe blueshift in certain start?
Stars with higher temperatures emit more light waves at the blue end of the spectrum.
Stars with lower temperatures emit more light waves at the blues end of the spectrum
Light wave frequencies decrease as an object moves forward the observer
Light wave frequencies increase as an object moves toward the observer
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