| user: | ravich2_7183 |
| created: | May 10, 2013 |
| karma: | 30 |
| 1. | Ingenious James Bond style cheating gadgets confiscated during gaokao(online.thatsmags.com) |
| 2. | |
| 3. | Stangenkunst: Mechanical equivalent of AC power transmision(lowtechmagazine.com) |
| 4. | Kepler's Mysterium Cosmographicum (1596)(youtube.com) |