What is an Epidiascope projector?

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Tags

1. #opaque
2. #imaging
3. #lenses
4. #epidioscope
5. #mirrors
6. #system
7. #projector
8. #object
9. #prisms
10. #shining
11. #which
12. #focus
13. #materials
14. #material
15. #viewing
16. #screen
17. #image
18. #device
19. #bright
20. #epidiascope
21. #episcope
22. #displays
23. #above