Nuclear fusion | Physics | Khan Academy
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- Опубліковано 15 чер 2024
- During nuclear fusion, two or more nuclei combine to form a different nucleus. When light nuclei fuse to produce a nucleus lighter than iron, energy is released (exothermic). When heavy nuclei fuse to produce a nucleus heavier than iron, energy is absorbed (endothermic). The release or absorption of energy relates to the difference in total mass of the reactants and products by E=mc^2. Nuclear fusion powers the Sun and other stars.
Sections:
00:00 - Intro
00:30 - What is nuclear fusion?
03:25 - What powers the sun?
04:58 - Mass defect (E = mc^2)
09:00 - Stellar nucleosynthesis (proton-proton chain)
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Sir please cover whole chemistry of class 11th and 12th. I like your teaching sir . Please!
Next video want to be about nuclear fission
I needed this right now thanks 😊
When it coms to fusion, gravity is the key primary ingredient.
It so fun i like sciene thank you for teaching❤
awsome very helfull
Stars the size of the sun don't have the energy to collapse into supernovae, they collapse into white dwarves and then continue fusion into iron spheres then cool off.
❤❤
I want the next video to be about space pls
So a Joule is actually a gm²/s²?
Thanks
Wait.... is that the voice of FloatHeadPhysics!?!
Yus!
8Be is actually unstable. Very fast it splits back into 2 alphas again. But 8Be is used in the triple alpha process in big stars for the short time it doesn't decay to fuse with another alpha and produce 12C.
The only stable isotope of Be is 7Be I think.
Let's make some noise for the man "Mahesh Shenoy"
isn't it positron decay and not beta decay? 10:03
Positron emission is a type of beta decay.
This type of beta decay is called “Beta-plus decay”, it's a nuclear process in which a proton decays into a neutron, positron, and neutrino.
Where did the Big Bang come from?
And where did the source of that source come from..
a bigger power@@maltreser6084