Another way to study starlight is to examine the intensity of light emitted at various wavelengths. The intensity of each color of light can be shown in a graphical representation of a spectrum. The graphical spectra show intensity on the y-axis and wavelength along the x-axis.
! Move your cursor over each visible spectrum to see a graphical spectrum for the same star. Examine how the visible spectrum and graphical spectrum are related for each of the four standard stars.