Timeline for If aerographite is lighter than air, why doesn't it float?
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
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| Nov 29, 2020 at 13:43 | comment | added | QurakNerd | Kind of feels like cheating. could I not just make a giant empty box and say, if the inside was a vacumn, the whole thing is lighter than air? | |
| Aug 28, 2013 at 19:23 | comment | added | DJohnM | An analogy: Do steel sheets float? If you form them into an aircraft carrier? if you fill the aircraft carrier with water? | |
| Jul 15, 2013 at 14:12 | vote | accept | Youcha | ||
| Jul 14, 2013 at 21:48 | comment | added | Christian | @udiboy It's the vacuum that floats, not the hard stuff. It's a common misconception that a vacuum doesn't float ... if you can somehow encapsulate it that is. | |
| Jul 14, 2013 at 20:48 | history | edited | mgphys | CC BY-SA 3.0 |
Expanded the answer to include discussion in the comments.
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| Jul 14, 2013 at 18:29 | comment | added | mgphys | This would be less than the weight of the structure, especially considering the dense composition of the nanotubes out which the aerographite is composed. In other words it wouldn't float, as the whole structure is denser than air. | |
| Jul 14, 2013 at 18:27 | comment | added | mgphys | Aerographite would effectively displace the volume of air equal to the sum of volumes of all nanotubes comprising the aerographite (everything else would get filled air). The buoyant force then would be equal to the weight of air occupying that volume. | |
| Jul 14, 2013 at 17:55 | comment | added | udiboy1209 | How would filling the aerographene with air prevent it from floating? Its density is still lesser than air. | |
| Jul 14, 2013 at 16:21 | history | edited | mgphys | CC BY-SA 3.0 |
added 311 characters in body
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| Jul 14, 2013 at 15:54 | history | answered | mgphys | CC BY-SA 3.0 |