Figure 5-16: R I V U X G
Various Spectra These photographs show the spectra of different types of gases as measured in a laboratory on Earth. Each type of gas has a unique spectrum that is the same wherever in the universe the gas is found. Water vapor (H2O) is a compound whose molecules are made up of hydrogen and oxygen atoms; the hydrogen molecule (H2) is made up of two hydrogen atoms. For the hydrogen gas lamp, the bright lines are from single hydrogen atoms (H), and the fainter lines are emitted from hydrogen molecules (H2).
Various Spectra These photographs show the spectra of different types of gases as measured in a laboratory on Earth. Each type of gas has a unique spectrum that is the same wherever in the universe the gas is found. Water vapor (H2O) is a compound whose molecules are made up of hydrogen and oxygen atoms; the hydrogen molecule (H2) is made up of two hydrogen atoms. For the hydrogen gas lamp, the bright lines are from single hydrogen atoms (H), and the fainter lines are emitted from hydrogen molecules (H2).
(Ted Kinsman/Science Photo Library)