Experiment in optic rays.
Experiment in optic rays.
- Videocassette (VHS)(ca. 30 min.) :sd., B&W. 1/2 in.
The film is intended not for pupils, but for teachers to encourage a new approach to their subject.
Optic rays.
The film is intended not for pupils, but for teachers to encourage a new approach to their subject.
Optic rays.