Introduction Some time ago in this Lab Notebook (back in 2023) I demonstrated the concept of F-centres, using crystals of caesium chloride (CsCl) excited in
Introduction In an earlier post, I used a sample of caesium chloride (CsCl) and a small Tesla coil to generate F centres. F centres are
Introduction This post is to help the home experimenter identify the spectra of some common light sources that we all come across in the home.
Introduction Here is the emission spectrum of hydrogen gas in a discharge tube recorded at moderate spectral resolution: Fig. 1 The Spectrum of Hydrogen Gas
Introduction In this article we are going to take a brief look at the emission spectra of the Noble Gases. The noble gases constitute the
Introduction The above image is a sample of high purity caesium chloride crystals, chemical formula CsCl. They are in a sealed glass ampoule and were
Introduction The chemical element Selenium. Atomic number 34. Chemical symbol Se. The quirky title I chose for this post – an element that can’t make
Introduction Millions of us see the Swan bands every day without even realising it. Every time a gas cooker is lit, or a Bunsen burner
