Ep 44: What stars are made of - The Lab

What stars are made of In order to find out what a star is made of, pass its light through a prism, and examine the resulting rainbow, or spectrum. Here’s an article that includes an app that will let you play with the effect of different chemicals on a spectrum. Absorption/emission lines And here’s the history, with names and dates, on how we figured out this particular trick. Spectral Lines and the History of Spectroscopy