When are people who keep going on about the Lorentz factor going to realise that this is NOT on the AS specification. This in the A2, it is not 'crap', it is actually a teacher who is acutely aware of the qualification that he is teaching. I obviously know these concepts but it is not about me showing off my knowledge, it is about supporting young learners in incremental stages - please don't make arrogant remarks about these videos unless you know the requirements of the course.
jack sheldrake You’re video has really helped me to understand this :) I know this was 4 years ago, but I hope the specification hasn’t changed dramatically because this was an old spec. Is it much difference to the latest, 2017 spec?
These videos are actual quality. That is why today, you have earned an extra subscriber! Please upload more of this because it really does help! Thanks
Thank you so much for this video. It has helped with this part of the topic a lot as i found it difficult to grasp. We need more people like u for every AS subject. Your videos and explanations are excellent. Pls continue make more.
Thank you so much for your feedback, I will be making a lot more videos in a couple of months after I have moved house and have my smartboard up again!
as you have worked out the energy and frequency of the electron, in the last example, would this also then by the frequency and energy of the photon then? thanks in advance!
No coz eV into Joules You multiply by (1.6 X 10^-19) So he basically saw on his data sheet that mass of an electron is (0.510999 MeV) . he wanted it in eV so did (0.51 X 10^6) to get it from MeV to eV. Then he multiplied (0.51X10^6) by (1.6X10^-19) to get eV into Joules. A faster way would be 0.51099 X (1.6 x10^-13) that would give you the same answer.
There appears to be some issues with audio. When using headphones the audio is only playing through one side. I have checked other channels videos and its not a fault with the headphones.
Shouldn't the energy considerations in pair production take into account the energies associated with the electromagnetic phenomena that the electron and positron would be associated with?
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When are people who keep going on about the Lorentz factor going to realise that this is NOT on the AS specification. This in the A2, it is not 'crap', it is actually a teacher who is acutely aware of the qualification that he is teaching. I obviously know these concepts but it is not about me showing off my knowledge, it is about supporting young learners in incremental stages - please don't make arrogant remarks about these videos unless you know the requirements of the course.
jack sheldrake
You’re video has really helped me to understand this :) I know this was 4 years ago, but I hope the specification hasn’t changed dramatically because this was an old spec. Is it much difference to the latest, 2017 spec?
My left ear appreciates this video.
Literally one of the best online physics channels on youtube. Thanks so much for this :-)
My left ear really enjoyed this
These videos are actual quality. That is why today, you have earned an extra subscriber! Please upload more of this because it really does help! Thanks
Thank you so much for this video. It has helped with this part of the topic a lot as i found it difficult to grasp. We need more people like u for every AS subject. Your videos and explanations are excellent. Pls continue make more.
Thank you so much for your feedback, I will be making a lot more videos in a couple of months after I have moved house and have my smartboard up again!
you are really good teaching and great video too, really thanks a lot, it's helping me a lot for a college exam i am going to take on this week
scousers have got themselves a great physician! top videos and the examples help so much! thank you
as you have worked out the energy and frequency of the electron, in the last example, would this also then by the frequency and energy of the photon then? thanks in advance!
Thank you so much, Your courses helped me many times, from ALGERIA !!
my left ear really appreciates this video
Incredible video, helpful, fast and just brilliant thank you so much.
These videos are so useful!!Keep up the good work.
Thanks. Your videos help me a lot in particle physics
Should you not multiply your electron volts value by 1.60x10^-13 and not 1.60x10^-19? Because I thought that 1MeV=1.60x10^-13
Jack Earl He converted the 0.511MeV into eV beforehand by timing the 0.511 by 10^6
doesnt that just make it back intro MeV by doing 10^-19 tho?
No coz eV into Joules You multiply by (1.6 X 10^-19)
So he basically saw on his data sheet that mass of an electron is (0.510999 MeV) . he wanted it in eV so did (0.51 X 10^6) to get it from MeV to eV. Then he multiplied (0.51X10^6) by (1.6X10^-19) to get eV into Joules.
A faster way would be 0.51099 X (1.6 x10^-13) that would give you the same answer.
Great video
Really helpful. I was struggling to understand it but this has helped a lot. thank you. :)
you're a really good teacher, thanks
There appears to be some issues with audio. When using headphones the audio is only playing through one side. I have checked other channels videos and its not a fault with the headphones.
very helpful video thanks
Extremely helpful. Thank you!
these videos are really helpful for my revision thanks! :D
Shouldn't the energy considerations in pair production take into account the energies associated with the electromagnetic phenomena that the electron and positron would be associated with?
Will you update your videos for the new spec?
These videos were really helpful thanks! If you could make some for Unit 2 also that'd be great
Good video
why did you consider mass of electricon as rest mass itself even when it is moving with 0.66C ??
This was really helpful, thanks.
U ARE AWESOME TEACHERR!
thanks, your stuff is so helpful
Thank you very much! This was really helpful :)
Thank you, it's verry helpful
how can i get the smart board which u r using?
No, this is AS
Saved my life cheers
sir the gamma rays is massless particle than how the law of conservation of momentum hold
Conservation of energy. The two gamma photons have energies which equate to the kinetic energy of the two particles that are annihilated.
these are great
Nice.
Electrons with no kinetic energy? I thought it's not possible to have a stationary electron.
Hero
You should consider relativity effects at least, cause the electron is moving really fast. Ekin=(gamma-1)mvv , gamma is the lorentzfactor.
Lorentz factor is only considered in A2 turning points, AS students should not concern themselves with this yet.
Why are two gamma rays always produced?? Why cant we just have one photon with all of the energy??
Two photons are released because one photon cannot ensure a total momentum of zero after the collision .
THANK YOU
when you close your eyes i hear gordon ramsey explaining physics
Why 2 photons are there
positronic!!!
7:05 lol je simply could have divided the number he previously calculated by 2... lmao