Apple QuickTime movie | 1996-09-01 | 5.5 MB | 160x120 | 15fps | 23 seconds | [MooV/TVOD]
Transcription: in a solid state you don't have simple vibrations, you have very more complicated vibrations. And so any solid that is being heated emits a continuous spectrum. In a gas it's almost always a discrete spectrum, individual lines.