Electromagnetic spectrum arrangement of waves according to their wavelengths and frequencies.
- gamma Short wavelength High frequency
- x-rays
- ultravoilet radiation
- visible light
- infrared
- microwaves
- radiowaves Long wavelength Low frequency
Doppler Effect the change in frequency of a wave due to movement of the source of the wave.
Wavelength are shortened as the source moves toward the observer and lengthened as the source moves away from the observer.
Short wavelengths are blue in color, long waves lengths are red in color.
What color would be the shift if a galaxy is moving away from Earth?
RED
Spectroscopy is the study of the properties of light that depend on wavelength.
Continuous spectrum includes
ROYGBIV