Timeline for Interaction between a pencil and rubber (eraser)
Current License: CC BY-SA 3.0
19 events
| when toggle format | what | by | license | comment | |
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| Mar 20, 2017 at 0:24 | history | edited | airhuff | CC BY-SA 3.0 |
Minor spelling correction, added adsorption tag.
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| Mar 20, 2017 at 0:23 | answer | added | airhuff | timeline score: 2 | |
| Mar 18, 2017 at 19:00 | review | Suggested edits | |||
| Mar 18, 2017 at 19:55 | |||||
| Mar 3, 2017 at 8:01 | comment | added | AMT | Please don't, there are no two opinions. Maybe you misunderstood. The debate was about what forces cause friction, not if friction was the thing to look for. This really shouldn't be a chemistry assignment. I would also be surprised if there was a debate about what causes friction, it's just not something your average chemist can answer on a quantum mechanical level. Also please read this, even though it's one of the worse articles en.wikipedia.org/wiki/Friction#Friction_at_the_atomic_level | |
| Mar 1, 2017 at 16:32 | comment | added | MattB | I asked for a school project, however since the various different opinions I might have to make an argument report, stating different opinions. I've been looking and researching into this, but it's difficult to find anything relevant. However I thank you all for these arguments! | |
| Feb 27, 2017 at 14:15 | comment | added | AMT | @airhuff It certainly is. I would like to read that answer even if the initial poster hasn't been seen since. If you have a really good one, please share it. If you want to look at it in great detail, we might get a very interesting picture. You got charges, surface irregularities (do perfectly even surfaces still erase?), adsorption to some degree I guess and a thousand different things. I wonder how much research has been done with erasers though. | |
| Feb 27, 2017 at 14:05 | comment | added | AMT | @Bob Maybe it depends on your definition of van der Waals forces. I really do not like this term because it isn't well defined. There are different definitions, some so broad that basically everything becomes van der Waals interaction. I think the key thing is that even the mentioned "non-abrasive erasers" seem to work (I'm not an expert in erasers) with at least a little bit of pressure. I think this makes saying Van der Waals interaction misleading. Yes, friction has something to do with dispersion as well, but that is not the full story. I don't see how "friction" isn't the right answer | |
| Feb 26, 2017 at 21:16 | comment | added | Bob | @AMT, how do you think friction works? Afterall, is it not theoretically impossible for two bodies of matter to come in to direct contact? | |
| Feb 26, 2017 at 19:40 | comment | added | airhuff | @AMT , there are several types of non-abrasive erasers that essentially do work by a wiping action or even just "blotting" the graphite from the paper. After reading about this a bit I can't decide if I should try to answer it or flag it as too broad! It's more interesting than appears at first glance. | |
| Feb 23, 2017 at 9:50 | comment | added | AMT | @JonCuster : If the initial poster and the commenters try to argue with Van-der-Waals interactions, I think saying friction/Pauli repulsion is sufficient. If you look at anything in detail, things get very complicated ... | |
| Feb 22, 2017 at 18:02 | comment | added | Jon Custer | Tribologists will tell you that friction and wear are complex phenomena with mechanical, physical, and chemical components. The answer is complex. | |
| Feb 22, 2017 at 15:58 | review | Close votes | |||
| Feb 22, 2017 at 18:26 | |||||
| Feb 22, 2017 at 15:38 | comment | added | AMT | It's called friction which is mechanical and not "chemical". Does the rubber erase the graphite if you just put it on your scribbles and don't rub it? I find that most chemists forget about the simple world of mechanics all too fast. Apply a thin layer of something on a surface and then rub it -> it vanishes. Must be hydrogen bonding, right? Wrong. Call it Pauli repulsion if you want | |
| Feb 22, 2017 at 6:33 | comment | added | Mockingbird | I also share the same thought.. | |
| Feb 22, 2017 at 5:51 | comment | added | airhuff | @Mockingbird, agreed. My first thought is that the Van der Waals interactions between the graphite and eraser are just stronger than those between the graphite and the paper, but I hope someone has a more thorough answer than that ;) Do you have any ideas? | |
| Feb 22, 2017 at 4:41 | history | tweeted | twitter.com/StackChemistry/status/834261848895713280 | ||
| Feb 22, 2017 at 0:59 | history | edited | MattB |
edited tags
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| Feb 22, 2017 at 0:13 | review | First posts | |||
| Feb 22, 2017 at 0:39 | |||||
| Feb 22, 2017 at 0:13 | history | asked | MattB | CC BY-SA 3.0 |