Nuclear Physics

[@EugeneKhutoryansky]

To see subtitles in other languages: Click on the gear symbol under the video, then click on "subtitles." Then select the language (You may need to scroll up and down to see all the languages available). --To change subtitle appearance: Scroll to the top of the language selection window and click "options." In the options window you can, for example, choose a different font color and background color, and set the "background opacity" to 100% to help make the subtitles more readable. --To turn the subtitles "on" or "off" altogether: Click the "CC" button under the video. --If you believe that the translation in the subtitles can be improved, please send me an email.

[@firestormjupiter]

Hearting your own comments lmao

[@nathansos8480]

Hi I’m not new

[@nunjahBitnes]

The entangled pair, is it created from some form of particle-gravity assisted reorganization of its more scattered energy? Does the pair re orients it path

[@ldsyaya1283]

🎉hl

[@spartacusmills]

I love watching things like this, it makes me feel intelligent for a few minutes before the inevitable decay starts. :)

[@seandafny]

Hang in there

[@MasterShot-ke1mr]

Spartacus Mills What decay? do you loose a helium ion and alpha decay? ot do you go up the periodic table thru beta decay?

[@theendoftimesgodhelpusall9570]

Spartacus Mills Lol.

[@theendoftimesgodhelpusall9570]

Spartacus Mills What decay? You mean a brain?

[@drewandfrank]

Exactly!@@

[@EugeneKhutoryansky]

Important Correction: At 13:57, the proton is converting into a neutron.

[@newpussle]

First thank you so much for such great video, second I wonder in the video you mentioned when electron capture decay occurs it emits neutrino but what I know is that it emits gamma rays. So can you pls explain this. Thanks

[@virginiagarridogenestaseco9706]

don't worry, everyone makes mistakes.

[@MrMegarag]

Thank you so much for this video. Can u explain how is possible for a proton to convert into a neutron, which is a little bit heavier and still emitting a positron and an electron neutrino?

[@smokey04200420]

Thank you, that made me so confused. Had to turn to Google but this correction helps a lot in ensuring that I was reading google correctly.

[@nathansos8480]

ANTI MATTER ALERT!

[@EugeneKhutoryansky]

If you like this video, you can help more people find it in their KZbin search engine by clicking the like button, and writing a comment.

[@EugeneKhutoryansky]

+TheExaltedPheonix, yes those are topics I would like to also eventually make videos on. Thanks.

[@EugeneKhutoryansky]

+TheExaltedPheonix, there are a number of other topics I would like to do videos on first, so I am not sure how long it will be before I get to those topics. Thanks.

[@tonywells7512]

+Physics Videos by Eugene Khutoryansky You shouldn't say 'the mass disappears from the universe'. Surely that would confuse some people.

[@EugeneKhutoryansky]

+Tony Wells, but that is exactly what happens.

[@tonywells7512]

+Physics Videos by Eugene Khutoryansky No, mass energy is transformed into photon energy, neutrinos and kinetic energy of daughter particles. Saying that mass disappears is incorrect, and confusing for lay persons. And also, if you do an experiment where you weigh a lead box (which absorbs neutrons and gamma rays for example) containing a lump of radioactive material its mass does not decrease (ignoring the tiny amount of energy lost by neutrinos that the lead box cannot stop of course). It may be pedantic but you have to be careful how you phrase things. Don't you agree?

[@thambupm]

I am really loving revisiting my old Physics classes with such new clarity, and without the stress of a looming exam! Great Channel.

[@EugeneKhutoryansky]

Thanks.

[@FocusReborn44]

Can't tell you how appreciative I am of these videos. I love the visual illustrations. Thanks again.

[@EugeneKhutoryansky]

+FocusReborn, thanks. It is nice to be appreciated. And thanks for the compliment on my visual illustrations. I am glad that you like them.

[@FocusReborn44]

Physics Videos by Eugene Khutoryansky You're welcome. Keep up the great work. I was wondering; I'm new to physics and while I love learning about it as much as I can I often struggle with where to start. Can you recommend a good starting point for a beginner? What should I learn about first? I want to learn physics in a very A-B-C fashion, I just don't know where to begin.

[@EugeneKhutoryansky]

+FocusReborn, I am not sure if there is necessarily only one answer to your questions. The order in which physics is typically taught is first by learning Newton's Laws of Motion and then Maxwell's Laws of electromagnetism, before moving on to topics like Quantum Mechanics and the Theory of Relativity. Though, it may be better to go in the opposite direction, and learn about the more interesting topics first (Relativity and Quantum Mechanics). This is the way I have my videos set up. My main videos on Relativity and Quantum Mechanics are among the first videos I made, and I made them in a way so that people could understand and follow them even if they have no prior knowledge of physics or mathematics.

[@FocusReborn44]

Physics Videos by Eugene Khutoryansky Awesome!! Thank you so much. That's helped me out a lot.

[@gamestuff8213]

+FocusReborn I agree with you 10 times over. Eugene's videos are the reason I have such a profound interest in Physics. Thank you so much Eugene.

[@Rationalific]

I don't think there's anywhere else to get this kind of depth of knowledge about the inner workings of atoms without pouring through tons of hard-to-understand pages full of formulae. You give an easy to understand overview that is rare elsewhere. Thanks!

[@EugeneKhutoryansky]

Thanks for the compliments.

[@Rationalific]

@@EugeneKhutoryansky 👍

[@theuniverse5096]

You must be some special kind of genius to create such awesome videos! Great work!

[@EugeneKhutoryansky]

+mehvish mujawar, thanks for that really great compliment.

[@EugeneKhutoryansky]

You can help translate this video by adding subtitles in other languages. To add a translation, click on the following link: kzbin.info_video?ref=share&v=r40h66qiF5I You will then be able to add translations for all the subtitles. You will also be able to provide a translation for the title of the video. Please remember to hit the submit button for both the title and for the subtitles, as they are submitted separately. Details about adding translations is available at support.google.com/youtube/answer/6054623?hl=en Thanks.

[@albertdumont4977]

Fantastic. I'm 52 years old but watching this channel i feel like a teenager learning interesting subjetcs as in my school days. Believe it, science is a trully fountain of youth.

[@ershadtantry5774]

I just love watching these wonderful videos.These have made me love physical sciences, more than ever..Thank you, Eugene for this great work.

[@radiotv624]

I started laughing for some reason when the particle became excited and the guitar music started playing 😂😂

[@himajatejaswini7457]

Talking precisely it may be Fe(iron) that stops further fusion and starts fission for elements heavier than iron but it is the Nickel that has more binding energy per nucleon than Fe making it the most stable element

[@TheStarcraftJACKAL]

Watching video - brains become excited. Finished - decay starts. Result? A C+ in physics.

[@146fallon]

I am so happy to watch this video. I have listened to my school physic teacher and asked many tutorial teachers and still don't understand, but I finally know after watching it. I am just so excited. thank you so much for creating this kind of video.

[@EugeneKhutoryansky]

Thanks. I am glad my video was helpful and that you liked it.

[@kcakca7044]

glad to see the description corrects the video at 14:00, where the correct process is proton decaying to neutron in Beta-plus decay

[@EugeneKhutoryansky]

The animation is actually correct, but the text & narration is where the mistake is.

[@bigbrother4932]

Great video. Excellent choice of background music.

[@RubALamp]

It would be much appreciated if you'd make a video about string theory (I don't know if you've made one already, if so I'll go see it). And thank you again for an amazing and thorough video.

[@MonteNegroMCMLXXXV]

Thank you for the amazing video. I have one question re statement at 2:43 - if elements heavier than metal experience the opposite effect (consuming mass and energy in order to fuse), should then not the graph, instead of a decreasing trend in mass, indicate the column in the negative (ie below the bottom line)?

[@pilgrimonthelongroad2875]

no, since what is being graphed is the missing mass per nucleon in that atom. When an atom fuses, the energy released or consumed is based on the difference of the missing mass of the nuclei that are fusing and the nucleus that is formed. thus, if the fusing nuclei have a higher missing mass per nucleon than the resulting nucleus, it consumes energy. It is the same as saying "if you start with a higher speed, and end with a lower speed, you have decreased in speed". your speed never goes negative, but you have still decreased.

[@ddopson]

At 5:20, the statement "fusion only plays a role in the secondary explosion" has a significant caveat. In many bombs, the fission primary uses a small puff of D+T gas injected into the middle of the Plutonium critical mass. This D+T gas fuses at roughly the same time that the fission reaction is peaking, releasing a burst of surplus neutrons that increases the percentage of the Plutonium in the primary that undergoes fission. In other words, the primary is a fission+fusion synergy, mostly fission, with a small amount of fusion to boost fission efficiency. In contrast, the "secondary", where the vast majority of fusion happens, is composed of Lithium-Deuteride (Lithium, when hit by a neutron, releases the Tritium needed for fusion). Xrays from the fission+fusion primary compress the Li-D secondary to fusion pressure / temp. And then the dirty secret of thermonuclear bombs is that more than half of the yield comes not from clean fusion, but rather from one final fission stage, that uses the neutrons released by fusion to fission natural Uranium (ie, mostly U238, not "weapons-grade" U235).

[@DCFusor]

Photons do not leave the universe. Energy is not always carried off by them, as spin must be conserved. Most energy in a thermo nuke is from fast fission of a tamper of U238, driven by neutrons created in the fusion part which is ignited by the original fission part. DT fusion-~16 megavolts. Fission ~ 200 megavolts. Beta decay after that due to products above the neutron drip line. Yes, I'm an actual nuclear physicist. Much of this doesn't rate "not even wrong".

[@CuroxX]

Doug Coulter Hello Doug. Is there any way I could get in touch with you? I’d like to learn about nuclear physics from a “profesional” I’m in 8th grade, middle school, and I’m advancing a lot quicker then my class. I feel like I’m waiting for the teacher to catch up, as they are teaching about ionic compounds, ores, atomic structure, etc while I have moved onto nuclear energy and it’s properties. I have many questions about things such as positrons, and the antimatter of which it is classified. And other things such as how the subatomic particles are classified and why. Any ideas or tips? -Thanks from a wondering 8th grade.

[@notsoclearsky]

Is there even a "sort" of autism?

[@pontyclundistrictdepot3377]

Clear Sky yes there is. Low functioning autism, high functioning and Asperger

[@pjosip]

I am so glad I found this channel

[@talalzero1418]

Nothing better than studying physics while listening to Beethoven

[@bryanseare2704]

Omg this THIS!!!! I watched this video to answer this very homework question, which my professor completely glossed over! I was NOT disappointed. Praise the efforts of the man over this channel.

[@ZoeTheCat]

It might be nice to show the difference between alpha & beta decay at 12:25, but once again - great job Eugene!

[@AshishVerma1001]

Why atoms lighter than iron releases energy during fusion but atoms heavier than iron absorbs energy during fusion?

[@VeganSemihCyprus33]

Can you prepare an episode on the Noether's theorem and the least action as well? Keep up the good work!

[@hazemmmm9105]

I wonder if anyone would love these videos more than me. I have been addicted to the way of illustration and visualization presented here. Many thanks. 🌹🌹🌹🌹🌹

[@EugeneKhutoryansky]

Thanks. I am glad you liked my video.

[@ilikemitchhedberg]

11:40 The nuclei do be vibin doe 😳

[@SOBIESKI_freedom]

Marvelous! I always enjoy your videos and keep looking forward to more installments. [BTW, "phenomenon" is the singular form and "phenomena" is the plural form.]

[@EugeneKhutoryansky]

+SOBIESKI, thanks.

[@onesppiegel]

I love physics and these videos are just gold. Thanks, Eugene!

[@EugeneKhutoryansky]

+onesppiegel, you are welcome and thanks. I am glad that you like my videos.

[@Dyslexic-Artist-Theory-on-Time]

It should be looked into why there is no time in the subatomic world within the atoms only the movement of part charge or fractions of charge? But in our everyday life we have the continuous movement of positive and negative charge as part of an interactive process.

[@nicos1097]

Eugene this is a great video. The animations and concise narration make learning physics very enjoyable.

[@EugeneKhutoryansky]

Thanks!

[@yuuum6738]

What is the y-axis at 2:43? It still said missing mass and releasing energy. If total mass will increase, the graph should indicate 0 around Fe and negative later. It doesn't make sense

[@nmarbletoe8210]

the y-axis is "missing mass" Yeah it is reversed from normal orientation, because as you go up the y axis the total mass of the nucleus decreases. The usual picture of a stable valley is flipped.

[@LetsPlayCodx]

How do you start nuclear fission with uranium? How do you add the initial neutron?

[@EugeneKhutoryansky]

Nuclear fission can occur on its own, thereby releasing a few neutrons. If you do not have a critical mass of enriched uranium, although a spontaneous fission event may produce a few other fission events, overall the number of neutrons available will quickly decrease as the neutrons get absorbed by other nuclei that do not produce fission. On the other hand, once you have a critical mass of enriched uranium, after your first spontaneous fission event, the number of available neutrons will get bigger and bigger, causing a chain reaction. By the way, instead of relying on a spontaneous fission event, neutrons can also be produced by accelerating deuterium into tritium, as is described in my video at kzbin.info/www/bejne/Z6S0iWSpqZqVmNk

[@insylem]

Are you sure about the Gama ray photons from Nuculeas? I thought a Gama Ray was just a high enegery electromatic wave (Photons) just shorter wavelengh than X-Rays. Or is it impossible for an electron going down an enegery level to make a Gamma Ray because there is too much enegery?

[@fezatrontron1576]

Thank you so much! Your videos makes the topics to be in an excited state :)

[@EugeneKhutoryansky]

Thanks.

[@eskilforsberg3544]

Eugene you're the best. I'm in the 9th (I'm 15) grade of elementary school in Sweden (last grade of elementary school). I'm really interested in physics, and the things we learn in scool are just not enough. Far from enough. We're just scratching the surface of something I'm really curious about and I want to see what's in under, but they won't/can't show me. That's why your videos are life savers.

[@EugeneKhutoryansky]

+eskil forsberg, Thanks for the compliment, and yes I agree that we can't trust the schools to cover the subject matter that they should. I am glad that you have found my videos helpful.

[@srpenguinbr]

Wait... there is a PBS Space Time video that says that the statement ''mass is a form of energy'' is completly wrong. The Hoster of the show said that mass is just a consequence of energy... Which is right?

[@firestormjupiter]

I think the hoster is right

[@amaaneeismail5256]

This is definitely one of the best physics channel out there

[@EugeneKhutoryansky]

Thanks for the compliment.

[@E--Drop]

Could you give me the names of the songs on this video? ...Particularly the 1st one and the one at 8:15 Thanks again for giving me the song names on the other video I commented on.

[@EugeneKhutoryansky]

All the music in this video is from the free KZbin audio library, and the names of the songs are the following. Road_to_Moscow Blue_Danube_by_Strauss Moonlight_Sonata_by_Beethoven Double_Helix Allemande Stale Mate

[@Pseudonym77]

Nice. This helped me understand nuclear physics better.

[@EugeneKhutoryansky]

+Fat Jesus, Thanks. I am glad that you found my video to be useful.

[@Pseudonym77]

+Physics Videos by Eugene Khutoryansky You should do a video on string theory to.

[@szjozsi]

according to newest theories the frequency of supernova explosions do not explain the quantity of heavy elements in the Universe nor they are capable to produce large amount of elements heavier than 35-40 protons (up to approx Krypton). the heavy elements mostly are created by neutron star collisions.

[@EugeneKhutoryansky]

This video does not contradict what you are saying, since the video does not say where "most" of the heavy elements come from.

[@BuchouKuruta]

I needed your videos, now I am understanding the concepts behind a lot of formula or equiation. Thank you very much.

[@JohnSmith-en9yb]

First of all, thanks for the great videos! better than many professors :) Maybe I'm confused about something here, but it seems like the graph at 1:34 isnt entirely correct. You described it as how much mass is missing per nucleon when they are first combining together. So for helium, the mass is actually lower than 2 protons and 2 neutrons. Nothing wrong or confusing here, but when we get past Iron, the graphs slowly starts declining, but is still positive (!), which would imply that for an element heavier than Iron there must still be less mass in the Nucleus than the sum of the mass of the Protons and Neutrons together, because the graph is still "above the x-axis". But then you go on to explain how Nuclear fusion with heavy elements requires energy instead of releasing it. I think the actual graph that you should have used is the derivation of the one you showed. Perhaps I'm missing something here, but something doesn't seem to be adding up here, quite literally :D. Great Video though!

[@EugeneKhutoryansky]

What is shown in the video is correct. Even for the heavier elements, the total mass is always less than the mass of the same number of nucleons that are independent of each other. So there is always a missing mass. When the heavy element splits apart, the amount of missing mass becomes even more, end hence energy is released because some of the mass is transformed into other forms of energy.

[@JohnSmith-en9yb]

Right, because only the difference between the amount of "missing mass" actually matters! Wow thank you, you made me love another area of physics!

[@CuroxX]

Physics Videos by Eugene Khutoryansky Reply to Doug Coulter please.

[@RapiBurrito]

Another excellent video, its an embarrassment for the KZbin's "community" that this channel sub count is not much higher. Keep up the good work!

[@EugeneKhutoryansky]

+RapiBurrito, thanks. Hopefully in the future, more people will share my videos, allowing me to get more subscribers.

[@tghelper0796]

This video is soo much good that my physics teacher has set an quiz competition on just this video, thats why i came here by the way nice video.

[@EugeneKhutoryansky]

Thanks. Glad you like my video.

[@away5534]

can you do a video on types of matter we discovered?

[@sulmansohailfarooqui]

A very I formative video for the general interested lay person. Explained in a straightforward manner with very good animations to help us visualise the processes described. Obviously the reality is much more complex but this video is perfectly pitched at general public.

[@EugeneKhutoryansky]

Thanks.

[@vobulate]

I really enjoy your videos, the clear explanations coupled with the brilliant animations give a really intuitive view of what's happening.

[@EugeneKhutoryansky]

+Vincent O Brien, thanks for the compliment on my videos. I am glad that you enjoy my explanations and my animations.

[@PolluxPavonis]

This is amazing, with great educational value. Thanks for these videos!! The quatum world is incredible.

[@EugeneKhutoryansky]

+Pollux Pavonis, you are welcome, and thanks for the compliment.

[@MasterShot-ke1mr]

10:27 These are thermal neutrons.

[@MukashfiNaiemAbdAllah]

At 14:02 the correct is that a proton turns into a neutron .. known as Positron emission or beta plus decay (β+ decay) Great job with the video 👍🏾

[@adnanshahriar4435]

Please state the starting times of each topic in the description, so that if someone wants to learn about Alpha decay, he don't have to search the whole video for it. Great work btw.

[@playerscience]

This explanation is way better than all the other explanations I have heard so far. It's a highly detailed explanation. 👌👌 Thank you. 🙏

[@EugeneKhutoryansky]

Thanks. I am glad you liked my explanation.

[@RajeshKumar-sd4pj]

Best scientific videos on youtube. Just wonderful

[@EugeneKhutoryansky]

Thanks for the compliment about my videos.

[@cidshroom]

If the energy is converted to photons, how does it completely disappear from the Universe? Isn't it just being converted to photons? With some of the energy going into heat, which becomes dissipated via entropy?

[@simoputtonen2799]

+cidshroom *The mass* disappears. The mass isn't there anymore because it has converted to energy.

[@cidshroom]

Simo Puttonen Completely misunderstood, makes more sense. I thought he was saying, mass, and its energy disappeared.

[@rahulshankar5551]

Can you please post some more videos regarding atomic behavior ?

[@kingdomofknowledge5960]

Make a video about string theory... please

[@Zalteir]

Could you please tell us the title of the metal song starting at 8:20 ? I'd really like to know the band, but couldn't find it either in the comments nor in the description. I really appreciate your videos, so easy to learn from them :) subbed

[@EugeneKhutoryansky]

Glad to have you as a subscriber. All the music in this video is from the free KZbin audio library, and the names of the songs are the following: Road_to_Moscow Blue_Danube_by_Strauss Moonlight_Sonata_by_Beethoven Double_Helix Allemande Stale Mate

[@غسق-غ2ج]

اذا اتحد بروتن ونيترون لتكوين ذرة فأن جزء من كتلتهما ستختفي وذلك لأن الكتلة هي صورة من صور الطاقة

[@mnada72]

لم افهم المنحنى في 1:37

[@kodyhirchak8336]

So is this the reason why antimatter explodes into a ton of gamma rays and why we could make antimatter out of gamma rays

[@John77Doe]

The Stars like our sun really shouldn't be able to fuse together the lighter elements, below Iron, except for the quantum tunneling effect. Stars like our sun don't have a high enough temperature. But with quantum tunneling because of no exactly defined position or momentum, sometimes atoms have the correct temperature and pressure and do join. Q

[@zakirhussain-js9ku]

How mass transforms into energy in fission, fusion, annihilation etc. & energy of photon into mass in pair production as per E=mc2.

[@bryanseare2704]

Very Cool! It goes along perfectly with my chemistry course, and clarifies some misconceptions I was taught, and gave some clarifications too. Your videos are Truly amazing! This goes over rules that clarify why other things are the way they are, which my professor didn’t bother or just didn’t have the time to go over.

[@EugeneKhutoryansky]

Thanks. I am glad you liked my video.

[@cgeiger2479]

what software is used for these physics simulations?

[@EugeneKhutoryansky]

I make my 3D animations with "Poser."

[@ahof1174]

13:56 meant to say proton converting to neutron

[@EugeneKhutoryansky]

Yes and that correction is in the video description.

[@larbicherifsaid99]

i have seen almost all your videos, you are the best.

[@EugeneKhutoryansky]

Thanks for the compliment and I am glad you like my videos.

[@jojibot9193]

I wouldn't say that the mass "disappears"

[@glasschem3294]

I love these videos, thank you !

[@EugeneKhutoryansky]

Glad you like my videos. Thanks.

[@kasaramsudhakar5273]

So much complicated things...explained very very simply and effectively. Thanking you.

[@EugeneKhutoryansky]

Thanks.

[@charleshudson5330]

Oh, how I wish your channel existed back in the '60s when I was a physics major. Back then we had to visualize everything in our imaginations. And calculations.

[@deenrqqwe6794]

I really appreciate your work. It’s so intuitive ☺️

[@EugeneKhutoryansky]

Thanks.

[@harshsinghal4342]

then answer my one question.consider the following things that happen during decay of nucleus through several methods. n0 - p+ + e- + v*e n0 - p+ + e+ + ve p+ + e- - n0 + ve here, n0 = neutron p+ = proton e- = electron e+ = positron ve = electron-neutrino v*e = anti electron-neutrino then combine the above three equations to get e+ + 2ve - e- does this suggest that an electron is made up of a positron and two electron neutrino (which contradicts with the fact that an electron is an elementary particle)??

[@tobyhardcastle6830]

In the second equation neutrons don't decay into a proton, positron and neutrino. Instead a proton can decay into a neutron a positron and a neutrino (p+ -> n0 + e+ + ve)

[@TheNavalAviator]

Finally someone who understands that nuclear fission is to be explained over a heavy metal track.

[@Thehopsalot]

you should mangle more videos that go into more detail on this. I am very curious about why atoms smaller than iron release energy during fusion and why atoms bigger than iron release energy during fission. thanks for the videos btw. they keep my mind active when I have nothing else to do.

[@waspstomper6250]

Town: *vaporizes* Physics: Looks like he couldn't handle the neutron style

[@cafeinst]

Excellent visual presentation.

[@iancrone2906]

Amazing, this is why I subbed.

[@dukeofwellington2931]

This and PBS SpaceTime are two of my favourite KZbin channels

[@EugeneKhutoryansky]

Thanks.

[@parjohansson3118]

As always, a very beautiful and informative video. For unknown reasons, it felt as an introduction to the Pound-Rebka experiment.

[@EugeneKhutoryansky]

+Pär Johansson, thanks for the compliment.

[@justcallmemaster4190]

keep going really good animated explaining

[@EugeneKhutoryansky]

Thanks.

[@OnceShy_TwiceBitten]

at the end, is that the same kind of entanglement as quantum entanglement? and what other particles can become entangled just electrons and their counter part? what about a proton and neutron or two protons etc.

[@Weston29406]

You're awesome for all of these videos. I appreciate it!

[@EugeneKhutoryansky]

+YaPaNiMaYu DaYa, thanks.

[@electric_photon4660]

Could you do a video of alpha and beta radiation?

[@ian6083]

I love your videos so much. As always, thank you, and keep up the excellent work!

[@EugeneKhutoryansky]

Thanks for the compliments.

[@איתיסמואלוב]

good video with a great visual explaining, the information is focused and right!

[@zdx1484]

this channel is made by a physics god. No textbook or guidebook i've seen have been able to explain this clearly. Didnt expect the politics tho

[@EugeneKhutoryansky]

Thanks for the compliment.

[@OnlineElvis]

You make complicated subjects easy to understand, great work!

[@EugeneKhutoryansky]

+Fiilis, thanks for the compliment.

[@janekk_]

it's explained unbelieveable well i couldn't find such good video like this one

[@EugeneKhutoryansky]

Thanks. I am glad you liked my video.

[@mikkel715]

Hi again Eugene and Kira. Nice science history facts. Have a great day.

[@EugeneKhutoryansky]

Thanks. And thanks for your support! I very much appreciate it.

[@mikkel715]

​@@EugeneKhutoryansky wouw. It should have been comment on your new short video. Ok, my comment arrived here to the linked video😄

[@migfed]

Superb videos Eugene. Your content keeps always such a high quality and clear concept explanation as well. I love physics more whwn i watch your videos. Thanks for those worthy lectures!!!

[@EugeneKhutoryansky]

+migfed, thanks for the compliments about my videos. I am glad that you enjoy them.

[@theonionpirate1076]

About a hydrogen nucleus having just a single proton... does it not also have a neutron? (referring to 11:20)

[@EugeneKhutoryansky]

There are different isotopes of hydrogen. In one version, there is just a proton. In another version, there is also a neutron. In yet another version, there are two neutrons.

[@dominicstewart-guido7598]

At 13:59 I think you ment to say that a proton would be turning into a neutron through the emission of a positron and an electron neutrino

[@EugeneKhutoryansky]

You are correct. This is a mistake and I mention this in the video description, underneath the video.

[@Nothing_serious]

So does this mean when a neutron hit an unstable atom it become too excited that it goes beyond the energy level?

[@JH-ux1re]

Animation is super cool! Love it!

[@EugeneKhutoryansky]

I am glad you like my animations. Thanks.

[@araouf47]

The fact that you learned all of these things and you can explain them in such an easy and fun way without watching your videos is amazing 😂Big Respect .. 👏🖤

[@EugeneKhutoryansky]

Thanks for the compliments.

[@akramfaiza3017]

What is source of strong nuclear force?

[@jerrygriffith5194]

So, the photons 'disappear' from the universe? And just where do they go?

[@paulmillar7823]

what started the nuclear process in a star? loved the vid

[@EugeneKhutoryansky]

Gravity started the nuclear process in the stars, but forcing the hydrogen nuclei close together. Glad you liked my video.

[@EddieA907]

"disappears from the universe" sounds creepy. I love it.