Apparaat maakt licht hoorbaar voor blinden / Blind man hearing light
| Uploaded by | Nationaal Archief |
|---|---|
| License | No known copyright restrictions |
| Comments | 2 |
| Favorites | 25 |
| Views | 22,404 |
| Date taken | 2009-12-18 13:15:00 |
| Date uploaded | 2009-12-18 |
| Tags | uitvindingen, inventions, spaarnestadphoto, blind, hear, horen, licht, light, 1912, disability, technology, invention, fournierdalbe, optophone, engineer, selenium, optical |
| Visibility | public |