George Pearson writes:
This weeks Chairman's Salver will be judged by Gary Carter CPAGB a very experienced judge on the KCPA circuit. The subject is Reflections (of the physical not meta-physical type).
I just hope the judge is up to speed on the difference between refraction, reflection and total internal reflections because most of my students aren't.
PS still need one more volunteer to give 30 mins images next season HELP I