General > General Technical Chat

Electrons are round!

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Psi:
This seems relevant.

Nominal Animal:
I'm sad, because there are no Pallas cats in Pallas, Finland.  None at nearby Ylläs, either.

I will now get my coat (it's still hanging at the bar), and go ask if I can has Cheezburger.

Simon:

--- Quote from: aetherist on August 15, 2023, 12:01:11 am ---
--- Quote from: TimFox on August 14, 2023, 11:32:32 pm ---How do the orbiting photons in your model (not yet substantiated) explain the Zeeman and Stark effects of external magnetic and electric fields on the atomic spectra?

(BTW, I haven't done the calculations yet but I guess that the erroneous wire table I linked was in terms of mm2, the common wire size in metric-speaking countries, rather than mm diameter, since I have had technical conversations with foreign engineers who used "mils" or "mm" as an abbreviation for area.)

--- End quote ---
I  am an Engineer not a physicist, & i dont know enuff about that kind of stuff.


--- End quote ---

OK, so we are done, you say you don't know what you are talking about but keep talking....

Simon:

--- Quote from: gnuarm on August 15, 2023, 02:45:12 am ---
--- Quote from: Simon on August 14, 2023, 04:40:43 pm ---
--- Quote from: aetherist on August 14, 2023, 07:30:56 am ---Ok, i have the correct results. I got my results from the link provided by TimFox.
A 1.0 mm Cu wire 1000 m long has a resistance of 35 ohm
A 10.0 mm Cu wire 1000 m long has a resistance of 3.6 ohm.
A 10.0 mm wire has a Xsectional area 100 times that of a 1.0 mm wire.
Hence the resistance of a 10.0 mm wire should be 0.35 ohm based on Xsection area.
And the resistance of a 10.0 mm wire should be 3.5 ohm based on circumference.
So, my circumference theory has an "error" of 0.1 ohm.
But your area theory has an error of 3.15 ohm.

--- End quote ---

good lord, heaven knows how I correctly worked out harness lengths in my previous career particularly when I had to calculate the length of cable required to supply a load that was more sensitive than most to voltage drop on a 24V system. I must have been on magic mushrooms at the time and was obviously helped by the fairies..... Or I used my understanding of current and correct physics.

--- End quote ---

I once worked at a place where there were rumors of a guy who not only was stupid, but had no idea just how stupid he was.  This was a beltway bandit, where we would either build systems for the government, or sometimes simply provide direct support. 

The story of this guy goes that he was in a meeting where they were picking the location of new antennas to be installed.  Different people gave a few opinions.  Then this guy, we'll call him Floyd, chimes in that we should put the antenna at the bottom of the hill.  Everyone had a laugh, then Floyd continued.  He said the antenna should be a the bottom of the hill, so that they would collect the electrons as they ran down the hill.  Another good laugh.  But, Floyd wasn't laughing!  He was being serious! 

Another time, Floyd and some other guys were doing a facility survey to prepare for installation of equipment in a room.  It's basically measuring the space, making sure there was enough AC, electricity, etc.  One of the team members was calculating the floor area, length times width.  Floyd said he was doing it wrong.  It's length divided by width.  The guy asked him what he was talking about.  Floyd's reasoning was, "How many quarters in a dollar?  How many quarters in two dollars?  See?" 

It's hard to argue with someone like that.

--- End quote ---

Point taken,

gnuarm:

--- Quote from: EPAIII on August 15, 2023, 09:08:41 am ---Actually, since electrons are best described by quantum theory which uses what is called a wave function that describes the probability of finding any individual electron at any given point in the universe and since that implies that each individual electron can actually and truly be at any given point in the universe when that wave function is made to collapse, then the shape of an electron, if it can indeed be said to have any shape at all, would be the shape of the universe itself.

And since we don't actually know what the shape of the universe itself is, we do not know what the shape of an electron is. Not really!

--- End quote ---

Maybe I missed an important post somewhere, but my understanding is an electron is a fundamental particle.  That means it can have no structure.  How would it have any shape, other than a point? 

If you wanted, I suppose you could make an argument that it's an infinitesimally small sphere.  But as soon as you do that, you could extrapolate it to be shaped like a chair or anything else. 

What's wrong with just saying it's a point with no particular shape?  Did someone already mention this?

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