|
1 00:00:00,000 --> 00:00:03,770 Spectroscopy is the study of how matter interacts with light. 2 00:00:04,738 --> 00:00:08,308 And it all began with a prism like this one. 3 00:00:09,676 --> 00:00:11,878 Light entering one side of the prism 4 00:00:11,878 --> 00:00:15,582 bends, or refracts, as it passes through the triangle shape 5 00:00:15,582 --> 00:00:18,685 and exits out the other side. 6 00:00:18,685 --> 00:00:21,154 All of the wavelengths enter together, 7 00:00:21,154 --> 00:00:25,592 but they exit as a rainbow-like spread of colors. 8 00:00:26,459 --> 00:00:31,097 What’s happening is that the shorter, more energetic wavelengths like blue and violet, 9 00:00:31,097 --> 00:00:36,469 bend a little more than the longer, lower-energy light like red and orange. 10 00:00:36,469 --> 00:00:41,741 Because they bend at slightly different angles, the wavelengths separate 11 00:00:41,741 --> 00:00:45,345 fanning out into a band of colors. |