Talk:Tyndall's bar breaker

Sources wanted
I was looking for sources about invention and history of this experiment but there seems to be little available. The only thing I found yet is that the experiment is existing and the setup is available as a commercial product for beeing used in physics lesson and that that the experiment was demonstrated to me by our physics teacher when I was 14 years old. In Tyndall's famous lecture "Heat considered as a mode of motion" I could not find a hint on this experiment. It is even unclear to me if Tyndall is really the inventor of this experiment (he certainly could have been!). Any hints are welcome! -- Dr. George (T) 14:25, 6 September 2020 (UTC)