GCSE Physics - Nuclear Fusion #39

[@Cognitoedu]

If you’d like to practise the material covered in this video, check out our platform at www.cognitoedu.org - it's totally free, and has been built to make learning and revision as easy as possible. The main features are: - Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown. - Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on. - Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like. - A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts. - A comprehensive bank of past exam papers, organised both by year, and also by topic. Amadeus & Tom

[@mnty7703]

honestly have my gcse in an hour and this has just managed to explain nuclear fusion in 3 mins that my teacher struggled to do with 2 years! THANKS

[@tanmayabharara]

What grade did u get in the end then?

[@yourlocalmadjack8374]

Oi what grade you get?

[@EggPotionFilms]

What grade did you get

[@imogyomomma]

@@yourlocalmadjack8374na why u startin it with an oi😭😭😭

[@StarryxBu77erfly]

​@@tanmayabhararaig we will never know..

[@siya9233]

This channel is honestly so underrated! I tell all my friends about you bc. you have helped me understand so much content that our teacher fails to explain properly. I wish there was some way that I could support you because you have helped me gain a lot of knowledge and you have definitely improved my grades and confidence

[@kiwi1005]

i completely agree, i was getting grade 6's in triple science and now i got a 9 in biology, 8 in chem and hopefully a 8 or 9 in physics soon

[@mutasimzaman2067]

@@kiwi1005 at least you were getting grade 6s i'm at 4s and 5s

[@kiwi1005]

@@mutasimzaman2067 Bro keep at it, what matters the most is consistency, i've only been staying consistent and real with myself for a few months eng language went from a 5+ - 6 to a 7, and im happy because the end of gcse exams are in may and this was only from october to around december. ALSO, DON'T EVER COMPARE YOURSELF TO OTHERS always compare yourself to how you did yesterday, and always seek improvement

[@lintonfor4035]

lol, its weird when you think about it, "tonnes of energy" seeing as in fact its like 1 trillionth of a gram

[@commoq3764]

You but then there’s a quadrillion of these trillions produced which accounts to a lot of kinetic energy.

[@Ottoytlui]

“The power of the sun, in the palm of my hands” - Doc Ock

[@neldino1251]

was thinking about that lol "its self-sustaining now!"

[@entername7679]

These videos are seriously useful. Thanks a lot!👍

[@Yorstruly]

this was way easier to understand than most videos and it's short too! thanks!

[@meenakshibhat6713]

Bro i love your videos, they help me grasp concepts in a very simple and easy way, plus these videos are very short, yet so detailed. Thanks a Lot 👍

[@user-8fe84mfm]

amazing video. I screenshotted the ends of the concepts and made them into flash cards for my test. It did well. Tysm you have really brought my grade up in science 10 from a fail to a B.

[@Cognitoedu]

That's a great study trick, glad we could help 👍

[@Nebularzzz]

This was a crazy good explanation! Thank you!

[@thebrillianthorse]

friend: who's your favourite youtuber? me: Cognito friend: Same!

[@alizaalnoor8945]

This channel will soon hit 1million subscribers.. The content is so informative and easier to understand :)

[@RachelLambert-b9c]

Please do some A level videos! I genuinely miss having these to help so much!!

[@Jorjia7]

I finally understand nuclear fission and fusion after watching both of the videos. Thank you so much

[@Rachel-pc9vr]

Love this! Thanks for the help and great drawing btw.

[@kevinthiele1163]

at 2:19 u described nuclear fusion as light nuclei to heavy nuclei... did u mean small nuclei to large... as in nuclear fission 2 small nuclei produce a larger nuclei with a lighter mass?

[@Cognitoedu]

Hi, some mass is lost yes, but the 2 nuclei that fuse together are each lighter than the nuclei they form, so we can say 2 lighter nuclei fuse to make a heavier nucleus or 2 smaller nuclei fuse to make a larger nucleus, both are correct :)

[@kevinthiele1163]

@@Cognitoedu sorry i dont understand because at 0:55 u say that the helium nucleis mass is lighter than that of the total mass of the two hydrogen nuclei?

[@nicknithilweekly]

@@kevinthiele1163 I think it is because some of the mass is turned into energy

[@kevinthiele1163]

@@nicknithilweekly ur comment has no relevance to what I'm talking about...

[@nicknithilweekly]

@@kevinthiele1163 Sorry I thought you were talking about why the helium nuclei was slightly lighter

[@parkey5]

We have created fusion here on earth, but the total amount of energy in is greater than the energy we can get out so it's not useful as an energy source.

[@samuraillama5088]

December 2022: "Oh we can change that"

[@Alpatrixx]

@@samuraillama5088 im pretty sure i saw something that said that technically we did put more energy, and that the researchers didnt include some use of energy i forgot, not entirely sure so dont quote me on it.

[@MusixandRandom]

0:26 video said He 3 over 2 Periodic table He 4 over 2. Is the remainder one neutron wasted as energy?

[@sarahfahdah5008]

no. There are just different types of helium and the periodic table lists the most common one

[@andjelijavojinovic9925]

Great explanation!

[@diptajotybarua5617]

thanks for Nuclear Fusion science

[@vintxge_taetae]

Hey.. can anyone explain pls. At one point in the video it’s said that two LIGHTER nuclei fuse to form one HEAVER nucleus, but at the same time they say that the mass of both the smaller nuclei is GREATER than the one large nucleus, as some mass is lost as energy. So... how does this make sense?

[@andria2528]

Basically it says that the total mass of the two hydrogen nuclei of will be higher than that of the helium atom produced since some of the mass is converted into energy. So the product (helium) will be less massive than each of the reactants (hydrogens). Then it says that two light nuclei (e.g. of hydrogen) can make a heavier nucleus (e.g. of helium) as in the mass number of the product (helium) will be greater compared to each of the reactants (each of the lighter hydrogen nuclei). Hope this helps

[@vintxge_taetae]

@@andria2528 ooh ok ty so much.. this reply came at just the right time😭

[@jake-ki4lh]

anyone else watching after the first successful fusion?

[@cheems3679]

Better than my physics teacher

[@sahilrizwan4762]

Ok uni man

[@Alpatrixx]

fr fr

[@simplyaviation9422]

I’m forced by my physics teacher to be here

[@farazkermani9768]

Really appreciated this concise video and its sister on fission. Question: how do we know for certain that fusion occurs in stars? Is this fact or theoretical?

[@hammadkhan-qy2bc]

Well sun is a star and is the hottest thing we know. So the temperature required will be acquired and the fusion process can take place. Well that's what I understood 🙂

[@farazkermani9768]

But that still appears to be theoretical, not factual.

[@abd_mat8869]

Well stars are composed of helium and hydrogen... The two elements that are a sort of fuel for the fusion in stars to start. In fact for a gas giant planet to become a star, there must be fusion reactions in its core and the planet must acquire the prerequisites for fusion reactions(mass, temperature, pressure etc..) How do they know that fusion is the main source? They analyzed the spectrum, temperatures and the wavesn etc. coming from the sun..also iam pretty sure there is no other reaction tht produces more energy than in fusion

[@farazkermani9768]

@@abd_mat8869 thanks for that!

[@anissbenthami]

How does nuclear fusion releases energy when that same energy is what makes the two lighter nuclei stick together to form the heavier nucleus?

[@LearnLearn-t7b]

Energy transformation...

[@rampantrobin6223]

0:45 is this conservation of mass?!

[@roshinipalanisankar6656]

Kind of ....that small amount of mass that's lost is called the mass defect since theoretically the constituents should add up to give the exact final mass but that's not the case.

[@roshinipalanisankar6656]

Usually we say that nuclear reactions are an exception of the law of conservation of mass since the mass doesn't add up exactly to give final mass

[@user-pw8ig1pm2v]

Simple But effective, Great vid !

[@Cognitoedu]

Thanks for the support - really happy you like it!

[@accessnft1702]

2024? Today is the day

[@veelo-sama5148]

What if we turns the earths core into a reactor we'd have the temperature and pressure needed 🤔

[@billyparker3223]

and if something like chernobyl happened with the fusion in the earths core we'd be kinda screwed

[@StarryxBu77erfly]

Dont let this bro cook 💀

[@huzaifasaeed9347]

pov 2023 and now we have successfully extracted more energy than we put into a nuclear fusion reaction

[@prisgila6178]

Thank you for making this video :) appreciate it yay✨

[@ianofliverpool7701]

Water melons to you sir!!!!

[@dangersorealman]

it's oppenheimerin time

[@donaldmjbart-williams3144]

Forget Nuclear fusion. I predict that Europe might one day depend on Africa for its energy. Africa has the capability to produce solar energy to firstly power the entire African content or even the whole world. This will completely change the power dynamic

[@huzaifasaeed9347]

i would disagree tbh. america and parts of europe have aready made succesful prototypes for nuclear fusion

[@donaldmjbart-williams3144]

You can disagree all you want. The emergence of any nuclear fusion in Europe will happen in 100 years. Africa has enough sunshine to power the entire continent two times over.

[@v_ish8426]

Especially the UK fusion reactor in Oxfordshire

[@AbdulAhad-l2j9e]

yeah I bet this guy just watched that one yt short about if you fill the Sahara desert with solar panels it could power the whole earth and more, what an idiot to think how hard that would be.If not it would have been done already

[@frs535]

Cheers mate!

[@lordespion8789]

Thank you so much

[@muntazerahmed5261]

How can I contact you sir I have a question

[@philipbrady9358]

easy to understand videos

[@dandelion1237]

Can you explain how nuclear fusion contributes to star formation?

[@d1.verse.]

no

[@jamalpov]

It is 100 million degrees not 10 million.

[@ginbradbury3278]

100 million kelvin not celsius 10,000,000 Celsius is about right :)

[@Diluxshan96]

Hi there, love the videos! They all look amazing - just wondering how you produce all of them: are you drawing all of these?? And how do you animate them!

[@Cognitoedu]

Hi Dil, thanks for the support :) really happy you like them! Yep they’re all hand drawn! Most of the pictures are drawn using procreate on an iPad! To animate them we use iOS screen record/ adobe after effects in various finickity ways 🙃

[@qwertyproductions4109]

@@Cognitoedu WOW you have some talent in drawing!!! i really find these attractive just because of your handwriting and graphics

[@kamAmak]

helpful

[@atwumer]

pray for my A*🙏🏻🙏🏻

[@fshahnawaz]

and here i thought fission produces more enrgy than fusion:/

[@cdrewell3575]

Thank you this was helpful :)

[@JoshGondwe]

you cant tell but just trust us

[@mushfikazad2276]

its like the medical chnnel called " osmosis"

[@MilkIGuess]

Thanks for the help :)

[@NicholasQuinn-z6s]

Green Forest

[@stupid-outline]

TODAY I LEARNT WHAT E = mc^2 WAASSSSS YAYYYy

[@manalomranebrahim5945]

Thank you ❤