Recent content by GregM

  1. G

    A Beta Decay, why did they have to resort to Neutrinos?

    wow, nice find. I want to read that book. The secrets of 1920s of beta decay research are inside. $66 before tax though.
  2. G

    A Beta Decay, why did they have to resort to Neutrinos?

    @mfb @hutchphd @Vanadium 50 @vela Thanks for your comments. I take it that you, like me, haven't found a list of papers from 1911~1929AD on hypotheses for beta decay energy sources.
  3. G

    A Beta Decay, why did they have to resort to Neutrinos?

    Of course. Same if that had been the case with other nuclear rays. An internal nuclear energy reserve for gamma rays was hypothesized: it was found. An internal nuclear energy reserve for alpha rays was hypothesized: it was found. In which paper did who suggest this additional energy? I don't...
  4. G

    A Beta Decay, why did they have to resort to Neutrinos?

    As I said, the info we've got on that period of nuclear research seems incomplete. A review of google scholar papers for beta decay spectrum theory and experiments from 1911 to 1929 gives scant or obtuse results. I think it would be a good project for a science history scholar with access to a...
  5. G

    A Beta Decay, why did they have to resort to Neutrinos?

    >Mass-Energy conservation That might explain it. The pool of energy in the nucleus hypothesis for beta decay would predict daughter nuclei with slight variations in mass, i.e. the mass-energy not taken by the outgoing electron. It would have taken a lot of experiments and refinements to discern...
  6. G

    A Beta Decay, why did they have to resort to Neutrinos?

    >Incoming neutrinos in beta decay? kek. Yes. I know its convention to assume the neutrino is an outgoing product of a spontaneous beta decay. But by the symmetry in energy and momentum conservation, and that neutrinos are directly undetectable, there's no way of knowing if a beta decay was...
  7. G

    A Beta Decay, why did they have to resort to Neutrinos?

    Yes I know already. Perhaps I should reword my OP. I'm interested in the work done from 1911 to 1930. It takes a college student 60 seconds to decide if energy or momentum equations do not add-up. Why did it take the community of leading physicists 19 years to do the same with beta-decay? Your...
  8. G

    A Beta Decay, why did they have to resort to Neutrinos?

    I'm reviewing history of subatomic physics. By 1931AD the nuclear physics community had decided to propose the neutrino because they couldn't explain beta decay without it. Alpha and Gamma decays were more confined wrt the energy they would extract from the nucleus i.e. they had energy bands. By...
  9. G

    B Hexagonal Craters: Airless Worlds & Moons Explored

    Geographic hexagonal fracture lines. I think this lot played too much Civilization 5. Looking at the Earth's geography and geology, hexagonal fault patterns don't exist. I don't see any lab model evidence. Callisto's South Pole
  10. G

    B Hexagonal Craters: Airless Worlds & Moons Explored

    >I don't see the green marked one as hexagonal but a semicircle with two flat side. Perhaps we've got a case of 'I don't think the heart is on the left side of the body'. It took centuries for experts to overturn their preconception that the human heart was in the centre of the chest, even when...
  11. G

    B Hexagonal Craters: Airless Worlds & Moons Explored

    Mimas with its large hexagon crater 'Herschel'
  12. G

    B Hexagonal Craters: Airless Worlds & Moons Explored

    >How many? You've mistaken me for a member of the ESA 10 year long solar system crater survey team. Very flattering, in return I'll mistake you for a fellow member: How many round craters are there in the solar system?>Check this for brief explanation: a rather vague arm wave at possile...
  13. G

    B Hexagonal Craters: Airless Worlds & Moons Explored

    On airless rocky worlds, why are so many craters hexagons? There are even some pentagons. I see them on the Moon, Mercury, Ceres, Mars, Mimas... It's quiker to note the airless worlds that don't have have hexagon craters. This one is Ceres. We can use this thread as an image repository for...
  14. G

    B A moving magnet in a linear electric field

    can't they just report the results of dropping a bar magnet between 2 large long capacitor plates? Debate about interpretation of the results should come later.
  15. G

    B A moving magnet in a linear electric field

    problem with the heaviside equations is they associate electric charge with mass, but not magnetic charge. Its harder to see how magnetic mass experiences force.
Back
Top