Nuclear fusion | Physics | Khan Academy

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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[@Aditya2364]

Sir please cover whole chemistry of class 11th and 12th. I like your teaching sir . Please!

[@rananjanabandara2376]

Next video want to be about nuclear fission

[@C.G.O.Iddamalgoda]

I needed this right now thanks 😊

[@merlepatterson]

When it coms to fusion, gravity is the key primary ingredient.

[@pandpp3144]

It so fun i like sciene thank you for teaching❤

[@sinekonata]

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.

[@webocampo]

I want the next video to be about space pls

[@sudevnarayan1074]

awsome very helfull

[@sinekonata]

So a Joule is actually a gm²/s²?

[@superpie0000]

❤❤

[@sinekonata]

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.

[@sinekonata]

The only stable isotope of Be is 7Be I think.

[@MrYellowAndYacello]

Wait.... is that the voice of FloatHeadPhysics!?!

[@Mahesh_Shenoy]

Yus!

[@chlodnia]

Thanks

[@harishs87]

Let's make some noise for the man "Mahesh Shenoy"

[@je_suis_une_pomme]

isn't it positron decay and not beta decay? 10:03

[@christinejackson6630]

Positron emission is a type of beta decay.

[@MrYellowAndYacello]

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.

[@maltreser6084]

Where did the Big Bang come from?

[@maltreser6084]

And where did the source of that source come from..

[@rachidazala4093]

a bigger power@@maltreser6084