Activity for yanisâ€
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Question | — |
Solar cells in the Renaissance An engineer goes back in time to attempt to rewrite history: since global warming has wiped out all but a few living species at his home timeline, he wants to prevent it without preventing an industrial revolution. To do this he plans to introduce photovoltaic cells, light bulbs and dc motors early... (more) |
— | over 5 years ago |