Fission & Fusion - GCSE & A-level Physics (full version)

scienceshorts.net Hey, don't listen to this guy! He says that you DIVIDE by 1.6x10-19 to get from eV to J. What an idiot!
Please don't forget to leave a like if you found this helpful!
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00:00 Fission & nuclear reactors
06:15 Fusion -
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[@lallib.3968]

I love these videos- got an a level exam today. Using these as a quick and easy way to get information into my brain without panicking.

[@md.abiazmustafiz3633]

how was ur exam

[@raltzia4420]

imagine doing your GCSEs
pfft
(it’s a joke)
hopefully my estimated grades are good
at least i don’t need to remember every macbeth quote

[@uzzy_787]

how were they?

[@billylardner]

@@raltzia4420 think he was asking about how your estimated grades were

[@sounad3736]

@@billylardner haha exactly!

[@benkaye5014]

Uranium-238 is fissionable but not fissile meaning it can't sustain a chain reaction but can be induced to fission. Uranium-235 is fissile and is the fuel required for a nuclear power station to work.

[@wrath8704]

Uranium 238 requires exposure to high energy neutrons to fission

[@simper4951]

yeah, I was confused about that, I think what happens when a neutron hits a U-238 atom is that it turns into P-239 (plutonium)

[@soadj28]

It takes a lot of energy, that's how three stage hydrogen bombs work.

[@medievalterrence9691]

I wanted to say that myself. Happy to see someone beat me to it!

[@yo0brum214]

Did anyone ask and is it really important, no. So just stfu and appreciate the vid and stop tryna display your intelligence

[@imogenfrancis4713]

These videos are so concise and explained well - they are really helping my alevel revision, thank you for uploading them!

[@TheB1gYC]

No worries glad u liked it!

[@TOXICRAVEN123]

Ive got Jan mocks (2020) coming up, thanks for all the videos

[@xhejsonxhaferaj5390]

thnx i found this really helpful for my next physics exam :)

[@dasarikumar3486]

Nicely explained.

[@ScribbleDribble]

Much appreciated.

[@mrsalden8652]

great video, so helpful!

[@tjsmith8318]

Thankyou so much learnt more than with my teacher. Very good explanation

[@magn8195]

Great Video!

[@fahimal-huq6867]

Thanks a lot sir.

[@TN_HondaDad]

Great video but it has spawned a 100 questions I have!

[@harrycalvert6468]

How come the neutrons aren’t absorbed by the atoms in the coolant or moderator?

[@flyingdutchman109]

energy 'made' smh XD

[@ScienceShorts]

Ohhh get a life. Energy isn't a physical thing, only a concept. To say that "kinetic energy is made" is no less correct than saying "an object's kinetic energy increases". The only thing that matters is how it related to the values.

[@rahmatalikhan9510]

@@ScienceShorts z hi

[@h0197]

what is the joke - energy cannot be created?

[@matthewkendall8592]

@@h0197 Yes it can only be harnessed

[@Cowmilker98]

@@matthewkendall8592 Hmm I think you mean that it can only be transferred from one type to another. 'Harnessed' implies the opposite of 'wasted', which it certainly can be!

[@the_hasnat]

Why use water that has a boiling point of 100C when you can use ethanol with a lower bp. Wouldn't that save more energy??
(I know alcohol is flammable.)

[@eagle1341]

So...is a fart considered fusion or fission?
(Assuming all particles behave as ideal gas in your answer)
(Marks will be awarded for writing answer clearly and concisely)

[@matthewpolydor6094]

Hi , i really like the videos, very helpful ,but please can you make a video to explain fundamental particles(flavours,quarks etc), thank you sir

[@ScienceShorts]

Already made.

[@jayboore3982]

The particles electrons are charged causing cells to be disrupted causing coma hypnotic state

[@fuzzylumpkin8030]

Why does fusion work against the strong nuclear force

[@Perpetual-motivation]

What you are describing at 4:58, is that what happened at Chernobyl?

[@ashiedee496]

couldn't have said it better tbh :)

[@divyanshjain766]

Can you also please make a video on the differences between high, intermediate and low-level waste?

[@kaisharyislam8103]

How can fuel rods be used up if there are still uranium left? Isn't it the uranium itself causing the reaction in the rod?

[@ScienceShorts]

+Kaishary Islam Because there is not enough uranium left to cause enough fission for a chain reaction.

[@wrath8704]

If mass of fissionable material falls below critical mass chain reaction cannot be sustained (critical mass is minimum mass of fissionable material required to start and sustain a chain reaction)

[@peterwilde4494]

I guess you don't care anymore but for anyone else reading this... The other reason for fuel rods still containing uranium being 'used up' is that the fission products produced can be good neutron absorbers themselves and this reduces the number of neutrons available for fission. Chemically removing them can make the fuel viable again. It is processes like this that are referred to as fuel reprocessing. An analogy for this might be the 'poisoning' of a catalyst in chemistry.

[@kademate6888]

uranium 238 cannot sustain a chain reaction*

[@iconichisoka7642]

this tutirial ate ms maam

[@divyanshjain766]

Can you please make a video of this chapter on what are the problems of storing radioactive waste?

[@jazzowen2640]

Have a test in 50 mins !

[@dewmithwaranasooriya4342]

8:35 you meant to say two deutrium nuclei isn't?

[@user-ji8br3dl9s]

Heavy hydrogen and deuterium are the same thing

[@hyronomusprice5439]

Here's a new concept, if everything is permitted by fusion of Fire and Darkness, then by reflection of symmetrical magnetic fields there is a quantum leap by De Broglie's wave transformation and Fourier dimension series.

[@AM-hn7gj]

what…

[@hyronomusprice5439]

See theoretically, things work. Not tangible though.