Describes the process of radioactive decay and nuclear fission including the calculation of half lives.
Пікірлер: 21
@6Adolf6Hiller610 жыл бұрын
Even though your atoms look a little like fried eggs, your method of explaining nuclear physics is highly engaging, very interesting and most informative. I often wonder how Sir Isaac Newton would appreciate the technology and the knowledge we have at our disposal today. I can relate to he, as I too have Aspergers Syndrome and have always been fascinated by physics, astronomy and stellar evolution. Thank you very much for all of your presentations.
@Benjones969 жыл бұрын
dude i cannot thank you enough, these videos help so much and are really good to help with revision! will be telling everyone about them because i think they are an extremely good revision aid!
@DrPhysicsA11 жыл бұрын
Yes you are right. I should perhaps have explained that I meant log to the base e. Thanks for your kind comments.
@DrPhysicsA12 жыл бұрын
Yes I fear I was a bit lazy at that point. I've added an annotation to clarify. Thanks.
@JA50N5559 жыл бұрын
thank you soo much....u are a great teacher :)
@DrPhysicsA11 жыл бұрын
The total mass of an atom is not solely the sum of the masses of its nucleons but also the binding energy holding them together.
@terminate58885 жыл бұрын
but a proton does not decay, it is the only know stable hadron.
@mr_killing12 жыл бұрын
Shouldn't the Integral of 1 over N be lnN? Here in the video we find LogN at about 2:00, but that implies that the log has a base of 10, which wouldn't lead to just N when we take the exponential of it. Love the work done with the videos, by the way. Well done! Very helpful indeed.
@alakazam789611 жыл бұрын
i have a question why do you lose mass in nuclear fission when you still have the same number of nucleons at the end of the reaction? i know you lose energy,but the total number of nucleons should determine the mass of the products
@ankit459380410 жыл бұрын
Thanks for the help :)
@IMadeOfClay10 жыл бұрын
Hello. What do you think could be the explanation for why these atoms decay randomly? I'm thinking along the lines of what a determinist might argue e.g. "It's not random! You just haven't figured it out yet!" This is something that has intrigued me on and off for years. Thanks for your video.
@DrPhysicsA10 жыл бұрын
It puzzled Einstein too. He could not accept that things were not deterministic and felt that they only appeared to be based on probability because we were not sufficiently aware of what was really going on in nature.
@MrKurier18 жыл бұрын
I want to ask about one thing... well.... lets say I have a kilogram of particles that have halflife of 1 second.... every second there will be half amount of particles that decay.... what will happen until there will be just 1 particle left? does it mean that every second there is 50% chance that particle will decay or...... ?
@huzaifayousaf267 жыл бұрын
SKGaming Box Though it has been 7 months A radioactive substance won't completely disappear because the decay is applied to the current amount of that substance. If u measure it in mass,It will be like this after every Half-Life 20 to 10 to 5 to 2.5 to 1.25 to 0.625 and so on.
@leAmispoppia8 жыл бұрын
you said that the total mass of an atom are not the nucleons but also the energy bonding then together does it mean that energy is mass or how does this work because there are same amount of quarks so there is total of same mass as i understand it or in which kind of form this mass is or does the strong force create some kind of gravitational field like currency creates magnetic field or am i missing something? (sorry english is not my native language)
@DrPhysicsA8 жыл бұрын
+Le Amispoppia Mass and Energy are equivalent according to Einstein: E = mc^2. So yes a very small amount of mass is lost in energy.
@AttaboyIII10 жыл бұрын
Should be the natural log of N, but never mind.
@kempster199610 жыл бұрын
I'm pretty sure the decay constant is ln(2) over the half life
@samikooldude10 жыл бұрын
Physics Unit 5 tomorrow? :p
@DrPhysicsA10 жыл бұрын
Sami Farooqui Hope it goes well. All good wishes.
@kempster199610 жыл бұрын
Unit 5 is on Thursday mate :P that is if you're doing OCR Physics B