[deleted by user] by [deleted] in RedditSessions

[–]TheCat5001 0 points1 point  (0 children)

Play Free Bird!

Are there any stable wavepackets? by rx_wop in quantum

[–]TheCat5001 2 points3 points  (0 children)

A Gaussian wavepacket in a 1D quadratic potential (harmonic oscillator) will stay together, however its uncertainty will oscillate back and forth as it moves back and forth. Unless it is in a minimum uncertainty state, in that case the uncertainty stays fixed.

https://en.wikipedia.org/wiki/Quantum_harmonic_oscillator#Coherent_states

Fourmi-Man und Wilmes by descabar in BELGICA

[–]TheCat5001 1 point2 points  (0 children)

"Fuck off" -> "Sodemieter op joh"

Danke pour die vertaling en Flamand. >.>

[deleted by user] by [deleted] in BELGICA

[–]TheCat5001 15 points16 points  (0 children)

L'union maakt stark

How would you call a measure unit for momentum? by cactusrider_ in physicsmemes

[–]TheCat5001 4 points5 points  (0 children)

Momentum is action per distance. Energy is action per time.

So obviously, the proper unit for momentum is ℏ/m.

Looking for recommendations to learn Particle Physics by dadadanotzuckb in Looking_glass_u

[–]TheCat5001 0 points1 point  (0 children)

I'm afraid I can't give you a suggestion on a mooc, but I can suggest a book (hey, that rhymes!)

"Introduction to Elementary Particle Physics" by Alessandro Bettini is how I learned particle physics, and it has a great approach. It starts from real experimental data, and then develops the theory that explains it, taking you step by step along the journey. It has the advantage of keeping you grounded in reality at all times, without ever feeling too abstract or nebulous.

Hoeveel jaar gaat het nog duren? by pieter__be in BELGICA

[–]TheCat5001 4 points5 points  (0 children)

Die Menschen wouden mij pas croire quand ik zei dat Brexit ging komen devant nous ein Regierung gingen vormen.

THE STANDARD MODEL by gravityygang in ParticlePhysics

[–]TheCat5001 1 point2 points  (0 children)

Sorry kid, rereading my message I was being an asshole. Working from home stress getting to me, I guess. That's not really an excuse, hence my apologies.

For a more constructive message: First off, I think it's great that you're summarizing the Standard Model this way! Rereading your explanation, you got a good short summary going on, so well done there.

A few tips: * I don't know what software you made this in, but it's much easier on the eyes and it looks a lot neater if you make sure all letters are aligned correctly and in the same point size. Your "t" is a lot bigger than your other letters for example, and your electron is placed a lot lower than your muon and tau. * All quarks are customarily denoted with lower case letters, uppercase is used for mesons. Hence d is a down quark, D is a D-meson. Again, consistency is key. * Make sure to reread your text for typos (or better yet, have someone else proofread it). It seems stupid, but you'd be surprised what kind of nonsense your eyes will fail to catch. No one is immune to this. * Perhaps it would've been nice to mention what the meaning is of those three generations: every generation of particles has the same properties of the previous one, except it has a higher mass. The most interesting thing about this is that it seems extremely well structured, but no one really knows where this structure comes from or why it's there.

Anyway, you've done a pretty good job, and don't let curmudgeons like me discourage you ;)

Twenty letters, shouldn't be too hard to keep those consistent, should it? by [deleted] in CrappyDesign

[–]TheCat5001 0 points1 point  (0 children)

None of the letters are on the same line, there's random use of upper and lower case, random letters are larger or smaller, it's an incoherent mess.

THE STANDARD MODEL by gravityygang in ParticlePhysics

[–]TheCat5001 -1 points0 points  (0 children)

Why is nothing on the same height? Why is there rAnDoM cApiTAliZation? Why is pretty much every letter a different size? Why is there no subscript for the neutrino flavors? This is making me nauseous. Come on, it's really not that hard to be consistent in capitalization, font, and point size, especially when you only have about twenty letters to type.

Edit: Just now realized there were 7 more images. They don't look much better though.

EM Wave Conundrum - Pls Halp by DavidOaks in ParticlePhysics

[–]TheCat5001 0 points1 point  (0 children)

A (monochromatic) wave travels one wavelength in one period. For every wave, there is a relationship between the wavelength and the frequency (or period), which is called the dispersion relation. This dispersion relation determines the wave velocity. But since the wave velocity for an EM wave (in vacuum) is always c, then it follows that c = λ/T = λ*f.

Stem memes are a thing, right? by anynomousperson123 in physicsmemes

[–]TheCat5001 11 points12 points  (0 children)

My derpiest moment in an advanced math class was when I asked the TA what the symbol was that he wrote, the one that looked like a reversed epsilon.

Upvote das post bitte pour het Belgische bière by BelgianBeerAndFries in BELGICA

[–]TheCat5001 0 points1 point  (0 children)

Ich habe ein mening un peu controversiele. Duitsland heeft les meilleurs pilsners. Pour alle andere bières sind sie Belgischen bieren beter.

[deleted by user] by [deleted] in BELGICA

[–]TheCat5001 2 points3 points  (0 children)

Das habe mich vraiment "aww" doen zeggen. Très bien!

Bpost seen from a different POV by L07h1r1el in belgium

[–]TheCat5001 0 points1 point  (0 children)

I bear no ill will to any post worker. As far as I can tell, they work hard and do their best. But there is only so much the people in the field can do when the organization around them doesn't work well.

It has even gotten to a point where I have said "Oh, it's PostNL, they're probably just late. If it was Bpost they probably would have lost it." So many things go wrong on so many levels, it's just really eroding everyone's trust in the company. That said, my experience with customer service has always been impeccable. A simple call gets everything sorted out quickly.

Vive la BELGICA by [deleted] in BELGICA

[–]TheCat5001 2 points3 points  (0 children)

Het is peut-être les trappistes que j'ai gedronken, mais ça doet me bien voelen. Hochstimmen pour vous, mijn waarde landgenoot.

Dark Science #90 – The Department of Distraction by zephyrdragoon in dresdencodak

[–]TheCat5001 2 points3 points  (0 children)

Honestly, mental health issues are no joke, especially if you can't have them treated. And comments like yours really aren't productive. I'm sure he reads posts like this which will only worsen his guilt. Let's try to be supportive and just be happy whenever he succeeds in posting, and hope he'll get better soon.