Timeline for Air pressure in balloon
Current License: CC BY-SA 3.0
2 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 2, 2015 at 14:51 | comment | added | Solomon Slow | The pressure inside a hot air balloon must be slightly higher than the ambient pressure, otherwise the balloon would have no shape. | |
| Jun 2, 2013 at 14:55 | history | answered | Maxim Umansky | CC BY-SA 3.0 |