Kurzgesagt was WRONG? - Nuclear Engineer Reacts to Kurzgesagt 'How Small Is An Atom?'

[Roger]

I am honestly really surprised how far off the end of the video was. That's not exactly advanced knowledge

[soulwynd]

Quark is actually 1.68m tall.


In all seriousness, Quarks are believed to be point like, although LHC finds the top quark to be in the scale of 10e-18 meters. I don't remember if they published a paper on this, but I only remember size being given to top quarks, which are the most massive ones. They are still extremely small if compared to the size an electron is believed to be.

[jacobvandermeulen]

Just going to say, T. Folse Nuclear is one of my favorite channels on YouTube. Great videos, and keep up the good work!

[adam_jri]

This might be splitting hairs, but for nuclear physics it’s important. Protons and neutrons (baryons) aren’t held together by the “strong interaction”, also called the strong force or strong nuclear force. They’re held together by the “residual strong force”, which is mediated by mesons, not gluons which are the bosons of the strong force. The strong force itself is color confined, so neutral colored particles can’t experience a net force. An important distinction is that the strong force between colored particles grows with distance due to self interactions of gluons creating flux tubes. The residual nuclear force drops off very rapidly with distance due to the fact that mesons are massive and have short lifespans.

[Otto]

Calling it the "strong nuclear force" is sorta outdated and slightly incorrect. The strong interaction holds the quarks together to form the proton, for example. The "nuclear force" holds hadrons together, such as holding protons onto neutrons. Now one could argue that these are basically the same thing, however, the differentiation has existed ever since there needed to be a differentiation to be made.

[cras]

strong interaction seems to be quite popular these days, especially when referring the actual gluon/color force as opposed to the residual nuclear force holding together a nucleus

[weischreiner]

I don’t think ive ever heard it called the strong interaction

[thetowndrunk]

Yet another example of why people like you are so important- you correct misinformation, which while seemingly innocent enough here, can lead to drastic issues later (like the average person’s extremely irrational fear of nuclear power).

[ultrametric]

RE interaction - yes the most correct way to refer to forces other than gravity is to call them interactions. That's because there is an exact correspondence between conserved currents and gauge symmetries of the Lagrangian. This shows up as "interaction terms" which couple the gauge fields and matter fields. The coupling is necessary to enforce the conservation laws. So strictly speaking, an "interaction" in this sense is a conserved current with a corresponding gauge symmetry in the free-space gauge field which mediates the interaction.

[darkwinter]

Mmmm.... electron soup. Now I'm hungry. See what you did? 😜

[DavidAndronov]

Even though most Kurzgesagt videos contain enough information needed to perceive a complex topic without having to apply certain inexplicable concepts laying the foundation of a reviewed scientific field, I inevitably have to mention that the explanations and comments added to the view of a unexperienced person trying to gather a sufficient amount of basic principles to be the overriding part of a majority of scientific fields frequently mentioned in popular science by Folse can be even astonishingly helpful for many well-educated highschool students including self. Still, especially at the times when Kurzgesagt team were just starting with analogical videos, they had to confront an important barrier about the choice between including very incomprehensible material into their videos and making them more widespread and shorter. Thus, considering their effort over the years, we can easily forgive Kurzgesagt for not having mentioned some harsh aspects of thermophysics and thermodynamics with quantum mechanics like single facts that "the sun is made out of plasma, and the electrons are separated from nuclei unlike in your body". By far, this isn't the whole representation of reality, and it is largely possible to continue furthermore including facts that the electrons actually shift themselves when forming a bond, thus being partially separated from the nuclei and also due to quantum effects..., but not a single normal viewer on Youtube would be extremely interested in that, right? Thus, I would say that such videos are great and helpful but they are definitely not enough to learn quantum physics properly.

[davecool]

They’ve been calling it the Strong Interaction for at least the last decade. Maybe more, since it was new.

[aneasteregg]

I'd like to suggest checking out The Deadliest Job of All Time by Joe Scott, it's right up your alley. Though I would also warn that it shows some pictures of chemical and radiation induced injuries, don't know if you're comfortable with having that on your channel or not.

[Lodestone]

2:18 Protons and neutrons are not elementary particles

[John-irzf]

Given the "probability" of electrons (no direct 100% certainty of its location in space or time), is that where the theory of the one electron universe comes from, seeing as all electrons are identical.

[rhodiirodiles]

I'd love to hear your thoughts on his new video about nuclear war! Depressing.

[loolkokos]

just watched the video your explanation is actually much eazyer to understand the way you say it

[tobo]

This is almost as wrong as some biology science channel claiming that us humans got leprosy from armadillos, when in fact, it is the other way around. Cuz how else did you have leprosy 4000 BCE in Egypt, when armadillos were hanging around in the Americas 😂

[Tomatohead_]

Hey could you react to Hazardos Inc Underground Research Laboratories meltdown and nuclear oxygen research facility meltdown? please it would be so cool

[Shoomer]

Are quarks zero-dimensional objects or dimensional objects? The answer to that question is yes.