Recent content by _PJ_

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    I Is the electromagnetic field of an electron in QFT a real physical field?

    The electron (as a disturbance i the electron field) interacts with electromagnetic field and therefore there are disturbances in the electromagnetic field (photons) Further, since photons are electromagnetic and electrons are charged, they respond to this and there are further disturbances ad...
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    Physics behind carryover cooking

    I understand "carryover cooking" is not specifically a physical process (although of course, ultimately driven by physical relations) - Instead, it is more a combination of chemical reaction and the (okay, more physical) flow of liquid throughout the meat. The chemical process is that of...
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    I Can Black Holes Store More Information Than We Think?

    I think at points throughout this thread, there's some confusion between a generalised information entropy and a more specific thermodynamic entropy
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    I Weight of a relativistic particle

    You could rearrange to work in momentum, this way you can even include massless objects
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    B Survival on Mars: Radiation & Temperature Challenges

    I really feel that any permanent residency on Mars is reallistically a LONG way off. Sure we could (technology and determination, not budget/psychology)establish some form of habitat that could sustain life within 50 years - however, so few people would be there and a single 'disaster' could...
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    B Shape of Universe | Is It Same from Every Point?

    I find a universe centred on !e particularly exciting :) - a joke only.
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    B Shape of Universe | Is It Same from Every Point?

    That's one of the biggest flaws of such analogies. Ther balloon does not represent the universe nor anything about the shape, topology or geometry of the universe. The SURFACE of the balloon 'skin', where drawings of galazy clusters might be made, represents the Relative distances between those...
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    B Understanding Reflection in Light: Electromagnetic Interactions with Matter

    I do recall passages and diagrams concerning internal reflections and the phase-changes as result but the details are fuzzy now. Also, I seem to recall diagrams where light was an oscillating line and matter had a ' surface' marked by a continuous, thin line... I am unconvinced that matter is...
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    B Why do material particles interact?

    Do they exchange bosons? If "an electron" is an excitation of an 'electron field', its electric charge proprerties suggest it excites and interacts with EM field, which is essentially, the photon field. As such, the excitations of the photon field as result of two electrtons can be intetpreted...
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    B Understanding Reflection in Light: Electromagnetic Interactions with Matter

    Yrs i have that book, unfortunately, it's in storage, and I've not seen an english-language version here. Sadly I am unable to memorise entire chapters I had read over ten years ago.
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    B Understanding Reflection in Light: Electromagnetic Interactions with Matter

    If light encounters -normal- matter, the electromagnetic aspects of the influence of the electrons will be interacted with (I'm ignoring any stress contributuins to gravity) which is (scattering matrix?) either nothing at all (translucency) due to quantisation, or absorbtion. Is this correct...
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    I Measuring particles through experiments

    At the end of the day, either i ought to have included quotation from the commentor to which my question was in response to (I did not since in its original location, I assumed the context was appropriate and sufficient), or the moderator ought not to have made this its own thread with such a...
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    I Measuring particles through experiments

    No. Of course I cannot provide that. Whyever would you expect that I might provide such a thing?! I think it extremely unlikely that such a claim would be made in such, nor would that pass publication or review. If ever it did, it would be highly suspect and extremely 'fringe'. The...
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    I Measuring particles through experiments

    "I'm again not sure what your problem really is, but QT tells you that indeed you can not individualize indistinguishable particles. " This is precisely my point. So if a comment claims to measure "THE particle" at one part, then measure THE same particle again at another part of an...
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    I Is Gravitation Responsible for the Stability of the Universe?

    Gravitation provides acceleration, which means that for example, objects pulled together by mutual gravity are accelerated - with just 2 of them, can attract directly - but with n-body at varying distances, they will all be accelerated giving them different velocities - this velocity may be...
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