Timeline for Finding the volume of this irregular shape I have
Current License: CC BY-SA 2.5
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 4, 2011 at 8:34 | comment | added | Nick Pascucci | Now, on the other hand if he measures the volume and the mass he may be able to identify the alloy if he didn't already have that information. | |
| Jan 2, 2011 at 21:22 | comment | added | Omega Centauri | Colin, that might the case. No doubt lowering something into a bucket of water and figuring out just how much spilled -and not spilling extra because you disturb the liquid surface and some sloshes out, may make the displacement method difficult in practice. | |
| Jan 2, 2011 at 20:46 | comment | added | Colin K | @Omega: That's true, and obviously a direct measurement will (almost) always have less uncertainty. However, it depends on what degree of precision you need, and if you know the alloy of the material in question. If he doesn't need to be more precise than is allowed by variation in the alloy, then whats the difference? and if he knows the alloy, a scale is a lot simpler than a messy bucket of water. | |
| Jan 2, 2011 at 17:25 | comment | added | Omega Centauri | There is aluminum, and then there are aluminum alloys. I wouldn't count on the density being the same as elemental aluminum, so the displacement method should be used. | |
| Jan 2, 2011 at 6:54 | history | answered | Colin K | CC BY-SA 2.5 |