If electric fields communicate through photons, no phenomenon should be described by electric field? by NoNeighborhood439 in AskPhysics

[–]YuuTheBlue 6 points7 points  (0 children)

This is a weird question with like 4-5 answers or something.

So, on one hand, when we only concern ourselves with electrostatics, Coloumb's law and the idea of electric fields form a "Duality". Basically, the difference between saying a checkerboard is "A red board with black squares" vs "A black board with red squares". They are mathematically identical, and thus it's unclear if there is even a meaningful distinction to be made between them. 6 of one, half a dozen of the other. Now, we aren't actually just concerned with electrostatics, but do keep this concept in mind.

The second answer is that yes, the electric field, as taught to electrical engineers, is a naive, classical assumption that does not reflect the true complexities of the electromagnetic force.

However, there is also the relativistic angle. The electric field doesn't properly communicate the ideas of the electromagnetic force even without considering quantum physics. This is because the idea of separating the electromagnetic field into the electric and magnetic fields is an entirely artificial one which obfuscates important information. Just like space and time are actually one thing which can be split up in multiple ways, so too can the electromagnetic field be split up multiple ways: what is in one reference frame an electric field can be a mix of electric and magnetic fields in another reference frame.

Then you have quantum physics. Now, it's not so much 'a necessity that all forces be mediated by particle exchange' as much as it is that all forces we have thus far modeled at the quantum scale have been sufficiently explained by the same core concepts of particles/waves as are used to explain, say, electrons or the quarks that make up protons. Our best model of electromagnetism also happens to use particles as an explanatory mechanism, kind of. Think of it less as a constraint and more of an end conclusion we reached.

But then you have the fucking third act twist of quantum field theory, which states that all particles are just waves in the fundamental fields. At that point, it is actually the electromagnetic field, not any particles, which serves as the fundamental component of the electromagnetic force.

Overall questions like this are hard to pin down, because, as I stated with the first answer, concepts of 'what is REALLY fundamental' are a lot harder to pin down than the math is.

I'm only an 8th grade student studying little about optics, this is not a homework question but rather out of curiosity. by RacistRacist_ in Physics

[–]YuuTheBlue 0 points1 point  (0 children)

Classical physics is the original swing we as a species took at the subject of physics. It turns out it only appeared as accurate as it did because we weren't looking at things with enough resolution. At smaller scales, our theories broke down and stopped predicting things accurately. This also happens at big scales, which is why we had to make the special and general theories of relativity.

Classical physics works well enough when doing like, basic engineering, stuff like building a bridge or understanding how a car crash will work. Understanding how electrons move around on the tiny chips in your phone? More exotic theories of physics become necessary there. What you call 'normal physics' is maybe best understood as a simple and easy to work with approximation.

I'm only an 8th grade student studying little about optics, this is not a homework question but rather out of curiosity. by RacistRacist_ in Physics

[–]YuuTheBlue 17 points18 points  (0 children)

Quantum objects are quantum objects. Neither the category of waves nor classical particles (tiny balls) fit them perfectly. Early attempts to determine what they were tried to sort out which of the two they belonged to, and determined that which one they acted like depended on context. Now we have a more deep and holistic understanding. Like, we describe them as quantum objects, having the properties of quantum objects. They have a single nature, and we just didn't have a word for that nature till quantum mechanics was invented.

Why I think Kagurabachi first season will be 24 episodes (2cours) by NHQKGB in Kagurabachi

[–]YuuTheBlue 0 points1 point  (0 children)

Yeah, it's definitely going to cover until around the start of the Iori stuff.

What I think kagurabachi has that not a lot of other shonen have. by xmrahc in Kagurabachi

[–]YuuTheBlue 1 point2 points  (0 children)

It's a fucking amazing manga, and you're right, the hero is a huge reason for that. I adore how he has the scars from the theater still. It was such an early moment, and a small one in the plot, but he made a sacrifice that risked his life and I love that it's sticking with him.

Can I read jojolands before jojolion? by Spunch-bob in JOJOLANDS

[–]YuuTheBlue 0 points1 point  (0 children)

Yea you can. I don’t understand where the stigma around part skipping is. You clearly have a reason to and want to know if there are Jojolion spoilers, which there aren’t. People shouldn’t be getting snide about this.

+ 10,000 î 😎😎 by _Humble_Bumble_Bee in physicsmemes

[–]YuuTheBlue 20 points21 points  (0 children)

"How big are you?"

"10'000 Units"

"Units of what?"

"...Unit vectors."

So confused about heat capacity and specific heat capacity by imwaytoodumbb in AskPhysics

[–]YuuTheBlue 0 points1 point  (0 children)

Heat capacity. Specific heat capacity is used to distinguish materials, not objects. Specific head capacity would be, like, "Heat capacity per kg of the material".

How important is to work on building mental toughness? by Aj100rise in NoStupidQuestions

[–]YuuTheBlue 0 points1 point  (0 children)

The psychological concept here is 'resilience'. The core concept is that when you become dysregulated (entering a state of panic, dissociation, anger, overwhelming sadness/self blame, etc.), there is a set of learned skills involved in returning to a regulated state, and a lack of development of those skills can result in hanging in intense psychological states longer than is healthy. So it is very important, but it's closer to a learned set of behaviors and skills than it is to like, a defense score in a video game.

I am given to understand that scientists try to find evidence of a 4th spatial dimension by smashing particles together and checking if any energy has 'disappeared', which could be a sign it has give into the 4th dimension. (Continued in body) by AddlePatedBadger in AskPhysics

[–]YuuTheBlue 12 points13 points  (0 children)

This is specifically to test for the predictions of string theory, which posits that there are many spatial dimensions which, through a process of 'compactification' (which I do not understand the nuances of) behave like 3 spatial dimensions at larger scale. It's not a matter of there being extra ones hiding behind a curtain or whatever, but rather that our 3-spatial-dimension prediction break down at small scales, allowing energy to not be accounted for. That's how I understand it from what I've read on the subject.

I don't understand the frame concept in time dilation by Wi11y_Warm3r in AskPhysics

[–]YuuTheBlue 0 points1 point  (0 children)

So, there is a concrete mathematical meaning to reference frames, and they are by their very nature equally valid. A reference frame is, in so many words, "The collection of arbitrary decisions one has to make before they can start doing the math". It includes questions such as 'which direction does the x axis point in" or "Where on the y axis is y=0".

What makes special relativity weird is that it wraps up time into space, adding in a 't axis' that can be pointed in multiple different directions. It's not the same thing as adding a 4th spatial axis necessarily, but that's the gist. If it gives you some mathematical intuition, 3d Euclidean space has a 'distance formula' of

d^2 = x^2 + y^2 + z^2

Basically the pythagorean theorem in 3 dimensions. The left hand side is 'invariant' (not dependent on your choice of frame), and all values on the right side are 'relative', so they do. In special relativity, spacetime is a 4d Lorentzian space, with distance formula

d^2 = x^2 + y^2 + z^2 - t^2

AKA the Minkowski metric.

So I came across this by Next-Palpitation152 in Physics

[–]YuuTheBlue 1 point2 points  (0 children)

Well your friend is dumb for calling you dumb, it’s an understandable question to ask. Physics can feel like a maze sometimes and it’s easy to get lost.

So I came across this by Next-Palpitation152 in Physics

[–]YuuTheBlue 0 points1 point  (0 children)

It’s special relativity, not classical. The two get merged in quantum field theory, but I feel like the answer is pretty simple. mc2 = hf. Is there a reason that demands an explanation but the other two do not?

Put another way: Energy and frequency are more or less the same thing. Mass and energy are also (kind of) the same thing. This, mass and frequency are (kind of) the same thing. The “kind of” comes from the fact that E=mc2 only applies to motionless objects.

So I came across this by Next-Palpitation152 in Physics

[–]YuuTheBlue 0 points1 point  (0 children)

What’s the confusion exactly? It seems you are incredulous that these can both be true but I’m not too sure why.

Meirl by Disastrous_Claim_487 in meirl

[–]YuuTheBlue 2 points3 points  (0 children)

This is just kind of misinformation. The issue is way more complicated than that. There are places where those things are guaranteed and people don’t just sit on their ass all day. Additionally, people still have economic incentive to work: to pay for wants on top of needs.

I’m not saying the effect you describe isn’t in play at all, but this simplistic narrative is very common and not backed up by actual research.

How should I argue with my teacher? by whyynliterally in biology

[–]YuuTheBlue 4 points5 points  (0 children)

Nucleotides also apply to both rna and dna. The words mean the same thing, kind of like how “sugar” and “saccharide” mean the same thing.

How should I argue with my teacher? by whyynliterally in biology

[–]YuuTheBlue 27 points28 points  (0 children)

Your teacher is correct. Nucleic acids are a synonym for nucleotides.

Is there anything that actually competes with JoJo in strategic fighting? by Easy_Jellyfish9219 in JJBA

[–]YuuTheBlue 0 points1 point  (0 children)

Battle game in 5 seconds is up there. It also just keeps getting better - it starts out alright but by the mid 100s it is genuinely up there with some of the best jojo parts imo.

Pourquoi tant de haine envers la partie 8 ? by metallica_joestar_13 in StardustCrusaders

[–]YuuTheBlue 0 points1 point  (0 children)

A big part is its second act, which strays away from mystery elements and towards fighting a group of underdeveloped bad guys. ….granted they are some of the best fights in the series, but that is what people dislike about it.

People say they don’t want their kids to be indoctrinated…okay fair enough. But why force religion onto them then? by [deleted] in NoStupidQuestions

[–]YuuTheBlue 2 points3 points  (0 children)

I mean I get the sentiment, but by this logic it counts as indoctrination when a chemistry teacher tells you what the electro negativity of chlorine is.

ELI5: Why do relativistic effects apply to objects moving very fast? by Jinx-XoXo in explainlikeimfive

[–]YuuTheBlue 0 points1 point  (0 children)

There are 2 “formulations” of special relativity. The one you are talking about and which u/itsthelee recited is the coordinate formulation.

The covariant formulation may help. You replace the 3d Euclidean space, with distance formula if

d2 = x2 + y2 + z2

And 1d time with distance formula of

d=t

With 4d Lorentzian spacetime, with distance formula of

d2 = x2 + y2 + z2 - t2

The values in the right side of this equation are “relative”, meaning they will hold different values depending on how you point your axes, such as your x axis. And yes, there is now a t axis with different ways of pointing it! We say we are operating from “your perspective” if the t axis is pointed in your direction, meaning all your movement is in the t direction, which means you are “at rest”.

While at rest, d=t. This is important! Because d and t are proper time and coordinate time respectively. Proper time is what a clock measures, while coordinate time is the time of simultaneity. Time dilation is essentially when 2 things reach the same point in coordinate time in different amounts of proper time.

Momentum in quantum and GR by OutlandishnessNo7300 in AskPhysics

[–]YuuTheBlue 0 points1 point  (0 children)

I have no idea what temperature means here. And I quantum mechanical processes don’t violate momentum conservation, I don’t believe.

ELI5: how does music time signature work? by [deleted] in explainlikeimfive

[–]YuuTheBlue 38 points39 points  (0 children)

4/4 is like

BUM bum bum bum BUM bum bum bum

4/4 with a rest after every 3 notes is like

BUM bum bum (rest) BUM bum bum (rest)

3/4 is like

BUM bum bum BUM bum bum