Good question. Yes, we (or at least those clever people working with particle accelerators, such as at CERN) can provide evidence for these interactions. When they smash particles together they are initiating different interactions - they don't know exactly what will happen with each collision (because it's probability based, as we see in the array of Feynman diagrams for each interaction) but they do know what won't happen (because everything has to be conserved through the collision: mass-energy, momentum, quantum numbers, etc). They have wrap-around detectors that collect data on what is produced by a collision and can then fill in the gaps by analysing the data. Other interactions can be inferred in different ways, such as the detection of neutrinos that I talk about in my latest video (Particle Physics - Experimental Evidence).
@@claudiamanta1943 Hi, thanks for the comment. I'm trying to aim this at 16-18 year olds who have never seen a Feynman diagram before. Of course, that doesn't mean that my explanation couldn't be clearer or more accurate. If you can add another comment with some more detail that helps towards my aim then that could be useful - there's always room for improvement!
@@BlakeTerrorPhysics It was not a criticism 🙂 I know absolutely nothing about quantum physics and your explanation made me feel that I understood something (which you should take as a huge compliment). I was just thinking ‘out loud’ as I find it interesting.
@@claudiamanta1943 Thank you. I was taking it as constructive criticism! There will be many ways I can improve these explanations, and I found this one particularly difficult because it's such a complex subject.
Thanks for sharing.
Very clear and informative.
Question: can we detect or prove the interactions?
Good question. Yes, we (or at least those clever people working with particle accelerators, such as at CERN) can provide evidence for these interactions. When they smash particles together they are initiating different interactions - they don't know exactly what will happen with each collision (because it's probability based, as we see in the array of Feynman diagrams for each interaction) but they do know what won't happen (because everything has to be conserved through the collision: mass-energy, momentum, quantum numbers, etc). They have wrap-around detectors that collect data on what is produced by a collision and can then fill in the gaps by analysing the data. Other interactions can be inferred in different ways, such as the detection of neutrinos that I talk about in my latest video (Particle Physics - Experimental Evidence).
16:33 Time 0 from whose perspective? Definitely not the positron’s. The positron’s time 0 starts at what and whose time?
@@claudiamanta1943 Hi, thanks for the comment. I'm trying to aim this at 16-18 year olds who have never seen a Feynman diagram before. Of course, that doesn't mean that my explanation couldn't be clearer or more accurate. If you can add another comment with some more detail that helps towards my aim then that could be useful - there's always room for improvement!
@@BlakeTerrorPhysics It was not a criticism 🙂 I know absolutely nothing about quantum physics and your explanation made me feel that I understood something (which you should take as a huge compliment). I was just thinking ‘out loud’ as I find it interesting.
@@claudiamanta1943 Thank you. I was taking it as constructive criticism! There will be many ways I can improve these explanations, and I found this one particularly difficult because it's such a complex subject.
@@BlakeTerrorPhysics I benefited from this video. Keep them coming.