Nuclear fusion | High school chemistry | Khan Academy

  Рет қаралды 18,551

Khan Academy

Khan Academy

3 ай бұрын

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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.
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Пікірлер: 22
@Aditya2364
@Aditya2364 3 ай бұрын
Sir please cover whole chemistry of class 11th and 12th. I like your teaching sir . Please!
@rananjanabandara2376
@rananjanabandara2376 3 ай бұрын
Next video want to be about nuclear fission
@C.G.O.Iddamalgoda
@C.G.O.Iddamalgoda 3 ай бұрын
I needed this right now thanks 😊
@sinekonata
@sinekonata 7 күн бұрын
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.
@merlepatterson
@merlepatterson 3 ай бұрын
When it coms to fusion, gravity is the key primary ingredient.
@pandpp3144
@pandpp3144 3 ай бұрын
It so fun i like sciene thank you for teaching❤
@sudevnarayan1074
@sudevnarayan1074 3 ай бұрын
awsome very helfull
@sinekonata
@sinekonata 7 күн бұрын
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
@sinekonata 7 күн бұрын
The only stable isotope of Be is 7Be I think.
@webocampo
@webocampo 2 ай бұрын
I want the next video to be about space pls
@superpie0000
@superpie0000 3 ай бұрын
❤❤
@sinekonata
@sinekonata 7 күн бұрын
So a Joule is actually a gm²/s²?
@chlodnia
@chlodnia 2 ай бұрын
Thanks
@harishs87
@harishs87 Ай бұрын
Let's make some noise for the man "Mahesh Shenoy"
@MrYellowAndYacello
@MrYellowAndYacello 2 ай бұрын
Wait.... is that the voice of FloatHeadPhysics!?!
@Mahesh_Shenoy
@Mahesh_Shenoy Ай бұрын
Yus!
@je_suis_une_pomme
@je_suis_une_pomme 2 ай бұрын
isn't it positron decay and not beta decay? 10:03
@christinejackson6630
@christinejackson6630 2 ай бұрын
Positron emission is a type of beta decay.
@MrYellowAndYacello
@MrYellowAndYacello 2 ай бұрын
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
@maltreser6084 3 ай бұрын
Where did the Big Bang come from?
@maltreser6084
@maltreser6084 3 ай бұрын
And where did the source of that source come from..
@rachidazala4093
@rachidazala4093 3 ай бұрын
a bigger power@@maltreser6084
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