2. Types of Spectra a. Light from a star that emits evenly at all visible wavelengths passes through a cloud of hydrogen and helium. Draw the plot that you expect your instruments to measure from this light. Explain how you drew your plot, including why any parts have an intensity of zero, non- zero, or are more/less intense than other wavelengths. Hydrogen Helium 600 nm Note: There are more spectral lines, but these are the ones that your instruments will notice. Intensity 300 400 500 600 700 Wavelength (nm)