IX. NOW let me state to you how the discovery mentioned on p. 12 was finally established by Kirchhoff. In my notice of the spectroscope in the earlier articles, I had so much to say that there were ...

RATHER more than sixty years ago, when the spectroscope became an effective instrument of scientific research through the work of Kirchhoff and Bunsen, it was regarded essentially as providing a new ...

My eldest son started secondary school this year and that means his first science labs (in addition to all the other changes of course). I loved school science labs with the scratchy oversized lab ...