Beta decay - detailed explanation for A level

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Uploaded by on Apr 22, 2008

Beta negative and positron decay alter the nature of the atom. The video explains the changes including the change in the quark balance in the nucleon.

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Education

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Uploader Comments (fizzicsorg)

  • how do scientists know that theres a change of quarks? do they assume that? it hasnt been observed obviously or has it?

  • It is, I think inferred, rather than observed, however the existence of quarks is supported by observation and the different types or "flavours" are supported by observation and mathematical analysis. The structure of each of these hadrons is therefore reasonably firmly established therefore the nature of the change seems a reasonable thing to infer.

  • Hi, does the intermediate stage always occur? ie: an emission of a boson then into the two other particles finally. Thanks

  • Yes, although the stage is very brief.

Top Comments

  • Very Nice! 5/5! I love Science! Ever since I was about 3, I looked up at the stars and always thought, "There has to be so much more out there..." When it comes to nuclear and quantum physics, it's a lot different. I love books like "Hyperspace", or "Beyond The Cosmos", I love Science, because there are so many questions and so little answers, if you think about it, in just our dimension...

  • read "The Elegant Universe" from brian greene. Is a fantastic book!! :)

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All Comments (16)

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  • Is this okay for me to learn, i am 15 only =D (birthday over)

  • So saying that a nuetron 'splits' to form a proton and electron is the dumbed down version?

  • nice. is there MOT experiment video available?

  • He meant the 137

  • You said both the number of nucleons and number of protons are the same on both sides. The number of nucleons is the same but the number of protons isn't, it has to increase from 55 to 56 in order to change from Cs to Ba.

  • This is amazing thank you very much!

  • W- and W+ and Z are the weak nuclear force,

    any anti quark will have a line above its initial

  • Is a W minus boson an anti-bottom quark and a strange quark?

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