Thank you. From that, again, a question arises: if one says an electron has kinetic energy. So the first instincts is to state that this is due to its motion. So the question arises: what motion and relative to what?
Thank you!
Hmmm.. Just in case: "We have rules in place to ensure Physics Forums is a fun, friendly, and productive environment."
Oh, just a thought that struck my students about the wikipedia entry:
"A chemical bond is an attraction between atoms that allows the formation of chemical substances that...
Well, we can only be thankful that mr Richard Feynman did not do his lectures this way...
Anyway: interesting and meaningful answers/discussions are still of course be welcome :)
Why do you link Wikipedia and copy-paste answers? I can read Wikipedia pretty well.. I assure you..
The questions were more like: how would you explain those things.
In a 2003 post about electrons and their behavior, which as a rule goes, tended not to get to a final solution, there was a quote by a poster:
"There is no chemical bond between chlorine and sodium. That is to say it is only electrostatic attraction, an ionic bond as opposed to a covalent bond...
Yep, that would do too: a post edited by mod would visible to everone and then a personal warning about that to the poster.
It is not perhaps better, but certainly more fair: without any labels etc.
I do not know how can one be more clear:
1. Either the "rude remark" would be removed with no traces about it whatsoever (but of course notifying the poster)
2. Or make the note "rude remark removed" clickable: so that everyone who wants, can click on it and see what the original remark was...
I am aware that private means this.. It still changes little. One person's private freedom ends with responsibility: the responsibility not to label someone without showing proof.
So in that context, it does not matter, that "private" means "owned by someone". This should not become an excuse...
Thank you for answering!
I guess it is possible to make that comment unanswerable, so that no commotion would arise..
If there somehow is a possibility that the "remark removed sign" would not appear, that would work too actually..
I had a heated discussion with one of the moderators, and...
I have a proposal about the forum's rules.
As you probably know, whenever a moderator decides that certain posts or remarks within a post are insulting, uncivil, sarcastic or rude, he or she removes that message and leaves a new message instead The message says something to the effect of the...
Err.. another point.. When a proton and electron accelerate towards each other, and when quantum weirdness takes over.. So where does the energy go that they had?
An article in Wikipedia tries to explain pigments.
One particular section has the following:
"A wide variety of wavelengths (colors) encounter a pigment. This pigment absorbs red and green light, but reflects blue, creating the color blue."
Questions arise... They may see stupid, but please...
True for the size of the work, not the how fast the work is done, though.. It is still bizarre that forces of same magnitude can do work with different speeds. And another point: a body can never gain potential energy without having kinetic energy. Sort of bizarre.
Very interesting.. the correlation-causation thing is intriguing. Just an example:
Two boxes of 2 kg are lifted. Their speeds are uniform. But one box has a speed, that is, say 4 times larger.
Both boxes gain potential energy (box-earth system gains).
Both boxes are acted upon a balanced...
Yes, no argument there! I thought that was a given! You cannot get higher kinetic energies than the system has potential energy as the whole.
That is well explained. But it does not contradict the fact that gravitational forces as a whole do have to act during a relatively long time period in...