8.1.1 The hydrogen spectrum and Bohr's theory 1.Light:a component of electromagnetic radiation 103m 1m 10-3m 10-6m 10-9m 10-12m 10-15m Long waves Radio waves Infrared Ultraviolet X-rays Gamma rays red orange green grass blue purple v⅓ 5×1014 6×1014 7×1014 1. Light: a component of electromagnetic radiation 8.1.1 The hydrogen spectrum and Bohr’s theory red orange green grass blue purple