Rant about physics

Alain De Vos

Alain De Vos

- An electron has no dimensions ,it's size is zero, or otherwise formulated a delta dirac function.
- A free electron is everywhere in space.

You cannot push your hand through a wall no matter how hard you push.
- At first it is an easy repellent of negative charged electrons
- PUSH HARDER : Pauli Exclusion: Electrons refuse to occupy the same quantum space , a force of size "infinity".
 
Alain De Vos said:
- An electron has no dimensions ,it's size is zero, or otherwise formulated a delta dirac function.
- A free electron is everywhere in space.

You cannot push your hand through a wall no matter how hard you push.
- At first it is an easy repelent of negative charged electrons
- Push harder , another force comes in to action , which is way stronger
- Push harder , a force of size "infinity" comes into action
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https://hypertextbook.com/facts/2000/DannyDonohue.shtml
 
Same as you are not worried about a single raindrop fall into your window may wet your carpet.
But having the roof hatch open while a thunderstorm is another beast.
It's not only always all about quality ("water is wet"), but also quantity makes a difference ("one raindrop does not wet your carpet. half a million rain drops will flood your living room.") 🤓

Many weird theories sound convincing plausible, because they're often based on causal chains containing true quality points only, which one has to agree to, but ignore the fact that quantity is a point of its own, too.
Looking at both at the same time is too complex for most people's brains to handle. 🧐🤓
But you don't need such tricks in a society that simply believes everything you tell them anyway, even if you contradict yourself constantly. 😁

But I thought "rant about physics" was more the kind of:
"I hate it, that this damned speed of light cannot be increased!" 🌨️😆
(I know a guy who would say: "We will do it in two weeks!")
😂
 
Quantum particles are not defined by size, but by mass, spin, charge (not just electric)... They are packets of probabilistic waves, more or less localized; we even have probability currents, like electric current. In this case, the conserved quantity is the total probability = 1, which is rather a good thing :-| As waves, talking about their size makes no sense.
 
doul said:
Quantum particles are not defined by size, but by mass, spin, charge (not just electric)... They are packets of probabilistic waves, more or less localized; we even have probability currents, like electric current. In this case, the conserved quantity is the total probability = 1, which is rather a good thing :-| As waves, talking about their size makes no sense.
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<RANT ON> Yes. I remember (dimly) when I had my early lectures in 1st year undergrad physics about the wave probability function. It's all fcuking crazy. The fact that experiements like the dual slit and photoelectric effect, radioactive decay, semiconductor physics, etc, appears to confirm the predictions of the theory makes it even worse. So what the hell is this 'reality' we are living in. How can an electron bubble up out of nothing according to some probability function and then disappear again, and why does it make a difference if a conscious being is observing it? And how the hell does quantum entanglement work, and what does it mean about the universe? What was there before the big bang? Arrgh. I knew a guy who was a professor of maths, his research was into brownian motion, and he told me once that working on it used to make him feel physically ill because it was so alien and abstract. So, that's my little rant about physics. Any and all mistakes and misunderstandings in the foregoing paragraph are entirely my own. And who is that bloody 'Shiva' guy, anyway, and why is he standing on that kid's back, and why is the kid grabbing a cobra... if it even is a kid... </EOR> Ahem... excuse my French.

1775330587201.png


Some information about the CERN Shiva statue here:- https://publicdelivery.org/shiva-statue-cern/

1775333915311.png
 
blackbird9 said:
And how the hell does quantum entanglement work, and what does it mean about the universe?
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For me it's important to remember that however powerful and predictive our current fundamental theories may be, they are only effective theories. Thus, just because our most fundamental theory is intrinsically probabilistic doesn't mean that Nature itself is probabilistic. If that last sentence even means anything, Nature has no need of our human theories.
 
doul said:
I've read all Feynman physics lectures, and I'm the only human in all the universe that understands quantum mechanics perfectly
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That was me halfway thru my quantum sequence in grad school. My confidence lasted until I asked a simple question when trying to relate quantum optics to the classical wave equation, "where do we get phase?" My prof told me to go work it out, so I did. I came up with a phase operator that taught me 2 things: 1) my proficiency with the math was improving, and 2) none of this shit makes any sense.
 
Random, but stuff like ±det(a) = εqjk apq aℓj amk = εqjkaqpajℓakm looks wild (source)

I can probably get Golf with judging distance with a putter vs driver and intuition, but good luck with the numbers and letters trying to calculate that 😅

I saw some TV episodes of bridge building and was surprised at what all went into it; I figured it was basically fine to stretch a large piece of road over something and some sturdy support beams, but nah there's a lot of science too :p This bridge looked pretty impressive until real-world physics somehow made cement and metal flexible for a bit:

View: https://www.youtube.com/watch?v=XggxeuFDaDU
 
blackbird9 said:
who is that bloody 'Shiva' guy, anyway, and why is he standing on that kid's back, and why is the kid grabbing a cobra... if it even is a kid...
Click to expand...
The dwarflike demon "apasmara" represents human ego or ignorance! The cobra represents the coiled energy of "kundalini". The wikipedia article on Nataraja is quite informative. Depending on whose history/archeological research/interpretations you believe, such explorations go back 3000 to 10,000 years or even longer!
epower53 said:
"I can safely say that nobody understands quantum mechanics."

- Richard Feynman
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I always understood this to mean that while the mathematics "works", nobody has an intuitive understanding of QM.
 
I had the best time in my high school physics class.

We spelled it Fizix.

Our class was all guys but three girls who stayed in the back and kept quiet.

Our teacher tried to show us how a formula wasn't practical. He said, "And we have no reason to drive 11 joules of energy into the ground," which led to "Now wait a minute!" from us.

Our teacher was Canadian and ran into trouble with the US draft board. We grabbed that story and ran with it.

A teacher's meeting ran long. We accidentally made a firework with the chemistry class chemicals.

Most of the guys had nicknames derived from their real last names: Fish, Dog, Bear, Mung, Syph...

The chemistry class challenged us to sell the most chocolate bars for a school charity. Chemistry sold $300. Ours was $5.

Since we lost, we had to sing "Good Morning" every Monday in their classroom for a month. This led to the formation of The Fizix Band.

The guy running for student body President hired the band to come out before his speech to play. We required he sign a 21-page contract.

My other classmates have a luncheon every quarter. A few months ago, I called Syph to see why he hadn't been attending. After letting him know who I was, I said, "We were thinking of getting the band back together," to which he immediately replied, "The Fizix Band?!" After 55 years, that he would respond right away with that was just amazing to me.
 
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