My school no longer has any qualified physics teachers to teach us a level, this helps me so much

god bless this man

6:37 Spot the mistake! To turn MeV into Joules, you MULTIPLY by 1.6x10^-13.

never learnt about that last point on helium being unusually stable, really helpful making notes on these videos in the week running up to the exam, thanks!

It would really be much more convenient if it was called separation energy

the econplusdal of physics

Thank you so much. you singlehandedly saved my grades

I really like your channel, your videos are my go to choice for consolidation after lessons, and I actively look for your thumbnails in the search results. They seem thoughtfully planned out, and they’re pleasant to watch and understand. You neatly cover the course content without expending unnecessary time, and you remain professional throughout (if we overlook the “BIG D” reference hehe). I’m sure I speak for everyone when I say that your channel is more than just a hobby or side business, but an outpost for aspiring physicists.

this is the most helpful physics video i've watched through my entire course - thank you so much

I am doing a research project at school on how nuclear reactors work, and this video helped so much to explain binding energy, mass defect and how this all relates to fission. Thank you so much!!!

*IT'S DAY 05 & UR VIDS ARE STILL HELPING ME IN UNIT 5, ALSO UNIT 4 WENT ALRIGHT ALL THANKS YO YOU, THANK YOU AGAIN GOOD SIR*

yikes this video is bright. still fantastic content though ;)

5:55 in the edexcel book, 1u=931.5 MeV, really small difference lmao but just thought i'd mention it

Why do I keep getting ads of “ A level Physics online” on “ Science Shorts” 😂😂😂

Thank god for this video, got an A level exam tomorrow and I needed this.

Excellent video sir. Please carry on making more videos and you have all our support!

such a concise video! thank you so much for the help! please make more videos :)

So so so so so helpful, you're a god, thank you so much

this is such a good explanation, thank you!

Really helpful and you actually explain pretty well, just wish you had more videos. And past paper solutions.

I need me some medical physics vids pleaseeee

What a good introduction of Binding Energy

thank you really for making these, you are saving my grades dude

Excellent video!

Thank you for this well done video! I’m not sure if it was covered but how do you calculate the potential energy between two points with a known mass number? Could you point me to a resource as well? Thank you!!

Thank you for your amazing videos, they are very helpful! I am confused about the steps in the process of mass defect. Because of the electrostatic repulsion between protons in the nucleus of an atom, there is a strong nuclear force which holds the nucleons in place. Firstly, where does this strong nuclear force come from? Is it generated by the neutrons? And why does the strong nuclear force cause a loss of the mass of protons and neutrons? How is the energy released related to this force? Does the strong nuclear force hold the protons and neutrons only, or their quarks as well? Also, how is binding energy related to all of this? Thanks again

Very clear - thanks!

Excellent explanation sir!

thank you so much for your amazing content!

There should be a heart option for such amazing videos!! THANKS

Ok. This is the part I'm constantly confused about. If total BE increased, then wouldn't that mean that mass is gained rather than lost (mass-energy equivalence)? Or is there something I'm misunderstanding?

.we are doing a mock paper 2 and I'm much confident on it now thanks for ur amazing videos.dont know what I would have done without them.i got a question : is the binding energy the energy needed to overcome the strong nuclear force between the nucleons from 0.5 fm to 4 fm (because it is attractive )and the rest of the energy is provided by the electrostatic force between protons to pull them apart?

Excellent!

i love you for making this video

You sir are a legend

thank you

Thankx bro

Great video however U-238 isn't a fissile isotope of uranium. A better example would have been U-235, which is fissile.

Thank you so much 😭💜💜

wonderful!

I thought that when we convert U to MeV we multiply by (933.75) which rounds to (934) .. atleast that's in the CIE syllabus. We calculate by using E=mc^2 . So E=(1.66x10^-27)(3x10^8)^2 . while U is the atomic mass unit. Then we Get the answer as 1.494x10^-19 (J). Then we divide by (1.6x10^-19) to get (933.75x10^6 eV) which is (933.75) MeV which rounds to (934) MeV

Hello, have you uploaded a video on Medical Imaging?

Have u considered doing these videos for A level chemistry

Am ready for tomorrow's exam☺️...thank you so much

I'm giving you a huge thuumb. Amazing sir Thank you 😌

great video

Nicely explained, thank you! Can you cover the Medical Physics section and Telecommunications for A level physics as well?

thanks!!

do we calculate mass defect the with the same formula in nuclear fission and fusion reaction?

Ohhh this makes so much sense

Thank yooouuuuuuu

great video :)

Thanks bro

I love it it help me teach my daughter

what is stopping everything from tending to Fe56 if thats the most stable nuclei

So the energy released in fission/fusion is equal to the increase in binding energy?

I feel big brain when watching these videos.

at 7:40 can someone explain why the binding energy goes up after uranium decays? - for anyone who needs this is how i understand it during fission energy is released from the system during the decay and to separate the atoms into its base nucleons, that energy will need to be put back in on top of what u already need. as binding energy is the energy used to separate them, it increases the mass decreases due to equation -> binding E = calculated mass - actual mass so an increase in binding E would be caused by a decrease in actual mass - as mass and energy are interchangeable

This guy is better than Einstein

Why does binding energy increase going from heavy to light Or going from light to heavy?

Theres is any website or app that allow us to produce an spherical representarion of what that MeV energy would look like? 🤔

Why does the total binding energy increase in fission?

Does the binding energy include the energy required to reduce the potential of the nucleon to 0, from the strong force?

Why does the neutrons and protons come together by using energy up but when it comes to seperating we have to put energy in ? Cant they use even more energy up to seperate and the mass decreases even further

Thank you for your lecture that made me sure for my knowlage was correct but I was not fulent now I am . 👌👌👌😍😍

this is interliantful

God bless u

He sounds like professor X, the young version.

Why do we take C12 atom to calculate atomic masses when FE56 is the most stable element in the periodic table???

in aqa 1u is 931.5?

7:39, am I right in saying that the total binding energy increases because the total energy in the system has decreased so now it takes more energy to separate the constituent parts? If not then I’m a bit confused on why the total binding energy increases Edit: just seen the fusion bit now as well and my point above wouldn’t work for it so I’m confused on how total binding energy increases for both fission and fusion

Does that mean that the whole universe will finally become a bulk of iron, which is the most stable state?

I had a hard time understanding something and after watching this video I get it! Thank you very much, love your channel.

Does He-2 exist in nature ? If so, it would mean that the binding force between to nucleons is greater than the em repulsive force between protons.

I understand how mass is lost during fission but I'm confused on how the mass is lost during fusion

I wish I found your channel sooner

shouldn't there be less binding energy after fission, since you have less nuclei bound together?

Just noticed your bleeding finger, hope you're okay 7 years later 😭

I’m cramming lol

Love yah♥️

6:37 I thought you Times by 1.6x^-13 to convert to joules but you said divide plz correct me if I'm wrong

6:45 you said that we are given it in formula booklet but in the formula booklet we are given 1u to kg. how do we get from that to 931.3

the voice is kinda makin me feel like im being lectured by Bradley James

Some resources don't include electron and some includes it, I'm confused now. We are talking about the nucleus right? Therefore electron is excluded?

Why does the binding energy increase if energy is released?

When we talk about the mass of an atom, dont we just consider the protons and neutrons, why have you added the u value of electron?

Is this in As level syllabus?

'Before using unlearn i was stuck on Cs eXspecially in economics'

In my book , u=931.5 mev c-² , to find the equivalent energy in mev multiply by c² , but u didn't multiply by c²

Sorted

i feel like im in heaven.... .the light is too much hehe.....btw this is helpful

Can you explain how did E = mc(square) has been came up?

Why are helium nuclei unusually stable for their number of nucleons?

i thought to get u to mev it was times by 931.5 not 931.3 :/

Less than 2hrs before exam

931.5

U238 fissions, does it?

Physics isnt helping itself as a field of study when it does things like defining binging energy as the energy required to sepparate. It serves no purpose to define it that way round and just makes the subject harder to learn.

Lighting

the book says that 1u=931.5 not 931.3