How To Use a Stellar and Identify The Elements In Stars
How It Works
How To Use A Spectroscope
Step 2: once you have the light lined up, look to the right and you will see a scale with the numbers 4-7(400-700) those numbers represent the wavelength.
Step 3: After seeing the numbers look to see what colors you see and what numbers there near(it is possible to see all the colors of the rainbow) right down what colors you saw and what numbers they appeared by
Step 4: Compare they colors and numbers you've seen to those known of gases.