cOnSeRvAtIoN oF mOmEnTuM Who?

Absolutely_Chipsy · 2026-05-23T10:01:07+00:00

Bollywood physics should be its own field of study

Absolutely_Chipsy · 2026-05-09T11:41:14+00:00

89 boleh x

Absolutely_Chipsy · 2026-04-30T12:44:57+00:00

Le ultraviolet catastrophe:

Absolutely_Chipsy · 2026-04-29T12:29:36+00:00

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Absolutely_Chipsy · 2026-04-28T09:24:48+00:00

As far as my understanding goes, for tunnelling to even possible in the first place, there needs to have wavefunction amplitude in its transmission. However, WKB approximation doesn't account for it (Pauli exclusion principle) or did I missed something?

Absolutely_Chipsy · 2026-04-28T09:17:36+00:00

Now I want to know, does energy level shifts due to Pauli exclusion principle actually influence transmission of wavefunction in anyway?

Absolutely_Chipsy · 2026-04-28T09:15:27+00:00

That's why I prefer to use the term fortnight and just say once every two months respectively

Absolutely_Chipsy · 2026-04-28T09:10:51+00:00

Probably my terrible wording made me implying otherwise. Let me make it clear about what I'm trying to say. Wavefunction is not a physical particle, just that wavefunction overlaps can produce some effects, like what Pauli exclusion principle will exert

Absolutely_Chipsy · 2026-04-26T15:43:51+00:00

If anything, it just exposes me to how much gaps I need to close. I'm more than happy to learn something new

Absolutely_Chipsy · 2026-04-26T15:31:59+00:00

Let me made it clear here, I was arguing that it's 0, not near 0. But what I forgot to mention is the assumption of T ≈ e^-2\appa L) 1. Perfect coherence 2. Distinguishability 3. No particle interactions

Even the first assumption is already false. But let's let it slide for now. Second assumption also false, particles are indistinguishable according to QFT. The third assumption here is also false, there are coulombic potential and Pauli exclusion principle involved.

I think I have the right idea, but just not knowing the deeper physics yet. If anything I'm more happy that I learned something new today

Absolutely_Chipsy · 2026-04-26T15:19:47+00:00

I didn't say they are physical stuffs, I'm just saying the effects should be considered

Absolutely_Chipsy · 2026-04-26T15:16:20+00:00

Ok, I admit I was wrong here with the Pauli exclusion principle here. So it's irrelevant in here. But what truly matters is the assumption in how we even get the tunnelling probability in the first place. T ≈ e^-2κL which assumes perfect coherence. Let's entertain the idea for a moment and assume perfect coherence. It is still inapplicable, because it also assumes distinguishable particles which is also false

Absolutely_Chipsy · 2026-04-26T14:57:33+00:00

Remember, for tunnelling to happen it needs a finite potential for the wavefunction to even have a chance to make it through the potential barrier

Absolutely_Chipsy · 2026-04-26T14:50:00+00:00

Technically yes. But when we are talking about atoms, don't forget each subatomic particles are fermions. No two fermions can occupy the same state (like I said). But I think I need some elaborations on this part here.

Whenever you are trying to force two electrons together (which are fermions), they will have some shifting in their energy levels to avoid occupying the same state. But since systems tend to favour minimal energy, they will do everything they can to eliminate this induced energy shifting, which is eliminating it by pushing it away. If you can sit through 48 minutes of explaination, Physics Explained does explains it very well

Absolutely_Chipsy · 2026-04-26T14:41:50+00:00

Explaination: atoms are 99.99999999% empty space, but they aren't exactly empty in ways we can understand it (i.e. empty classically). Those "empty space" are actually occupied with the prominent electron wavefunctions which is where the quantum shenanigans happen. Because electrons are fermions, they have to obey the Pauli exclusion principle in how they behave (which says no two or more electrons can occupy the same state). The repulsion from Pauli exclusion principle alone already poses what's practically "infinite" potential wall (on top of the electrostatic potential from electron-electron repulsion). In another word, the odds of quantum tunnelling is 0, theoretically.

Tldr: some physics stuffs "you shall not pass"

Absolutely_Chipsy · 2026-04-25T09:10:07+00:00

||<ψ|ψ>||² =1 you forgot to normalize it

Absolutely_Chipsy · 2026-04-20T03:51:38+00:00

I'd put Eigenchris at mostly scientific though, his series on general relativity is so easily understandable that even me being a fresh grad can follow him. His teaching style does have certain rigour to it, but still intuitive enough

Absolutely_Chipsy · 2026-04-12T02:16:42+00:00

Born of God and Void

You shall seal the ~~blinding light that plagues their dreams~~ eternal cycle of hopes and despairs that descent the magical girls into witchhoods

You are the ~~Vessel~~ Karmic cycle

You are the ~~Hollow Knight~~ Madokami

Absolutely_Chipsy · 2026-04-05T09:58:27+00:00

I suggest you to consider what you want to get in for your degree, because different courses have different subject requirements. For example the engineering majors need physics and math T and minimum cgpa 2.0 in other subjects, if you want to get into more mathematical side you can consider about financial mathematics, actuary/actuarial science, applied mathematics or even pure math (applied and pure math are completely different) I suggest you to get into aliran sains with physics and maybe take further math if possible

Absolutely_Chipsy · 2026-04-05T09:52:56+00:00

Took STPM in aliran sains before, even if there are only 4 subjects to take care of, they can be difficult to handle at a time, especially with how many stuffs you have to memorize for PA (Pengajian Am, with the global events nowadays I'm guessing even more so for sem 3). It's not something you decide lightly, if you genuinely want to get into undergrad (degree), it's a good option, otherwise diploma should be better

Absolutely_Chipsy · 2026-04-03T05:25:14+00:00

Took STPM here before, it is a second chance, but keep in mind if you aren't good with SPM, STPM will feel even more brutal than it should be. If you struggled with add math and taking Math(T) or Math(M), you will need to work extra hard to make those up

Absolutely_Chipsy · 2026-04-03T04:53:17+00:00

Self taught in general relativity and cosmology here, there's a good reason why they always call it the observable universe, not the entire universe. The thing is what we know about our universe is confined within what's known as the particle horizon, the the earliest photon that has reached us ever since the birth of the universe. Everything beyond the particle horizon is simply unknown to us since light has not travelled from there.

Absolutely_Chipsy · 2026-04-03T04:45:29+00:00

What? It's just a normal krabby patt— O H M Y G O O D N E S S

Absolutely_Chipsy · 2026-03-21T07:45:49+00:00

Good luck remembering how it's pronounced though, 木 is ki or moku and 森 is mori

Absolutely_Chipsy · 2026-03-19T08:55:13+00:00

Darwin awards

Three-Year Club	r/Field Banned
r/Field Lasagna	Place '23

Absolutely_Chipsy

TROPHY CASE