6A42.10 Refraction block: to show refraction.
6A44.10 Total internal reflection: to show total internal reflection and the critical angle.
** 6F10.30 Recombining the spectrum: to show a prism can be used to separate or to recombine the component wavelengths of white light.
Link: https://drive.google.com/open?id=1WDEgHYggbpIkZojKFMguke2qDylzDBe1giSonsNp-ns