MAKE A MEME
View Large Image
| View Original: | Teleskop-pruss-opt-teleg-co.jpg (956x500) | |||
| Download: | Original | Medium | Small | Thumb |
| Courtesy of: | commons.wikimedia.org | More Like This | ||
| Keywords: Teleskop-pruss-opt-teleg-co.jpg of a Telescope for the Prussian optical telegraph Handbook for telegraphists Museum für Post und Telekommunikation Frankfurt ca 1835 unknown probably Carl Philipp Heinrich Pistor 3 Januar 1778 in Berlin; 2 April 1847 in Berlin PD-old Signal towers Refracting telescope diagrams | ||||
