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nLab > Latest Changes: flux

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  1.  
    • CommentRowNumber1.
    • CommentAuthorUrs
    • CommentTimeOct 13th 2011

    one possible bit of information at flux

    • CommentRowNumber2.
    • CommentAuthorUrs
    • CommentTimeMar 5th 2023
    • (edited Mar 5th 2023)

    I have added a figure (here) showing the schematics of magnetic flux (lines) through a surface.

    This figure is grabbed from hyperphysics.phy-astr.gsu.edu/hbase/magnetic/fluxmg.html.

    From memory, I was expecting to find a good figure of this kind in either Frankel’s “The geometry of physics” or in Misner, Thorne & Wheeler’s Gravity — but looking through both books again, I was surprised that an actual figure showing flux lines/density through a surface is not present in either (the famous “egg-crate figures” of MSW seem more an illustration of the mathematics of exterior calculus than of the physics of flux).

    If anyone knows a good illustration of magnetic flux (lines) through surfaces from a canonical (textbook) reference, please let me know.

    diff, v8, current

    • CommentRowNumber3.
    • CommentAuthorUrs
    • CommentTimeMar 5th 2023
    • (edited Mar 5th 2023)

    have enhanced the figure a little (here)

    diff, v9, current

    • CommentRowNumber4.
    • CommentAuthorUrs
    • CommentTimeJun 13th 2023

    added pointer to:

    • Raymond Brock, Faraday’s Lines of Force – Modern Physics Begins, chapter 11 in: Quarks, Spacetime, and the Big Bang, lecture notes [chapter: pdf, full text:pdf]

    and will add this also to Michael Faraday

    diff, v10, current

    • CommentRowNumber5.
    • CommentAuthorUrs
    • CommentTimeJun 16th 2023
    • (edited Jun 16th 2023)

    added (here) one of the original iron filings pictures by Faraday, from 1851

    diff, v11, current

    • CommentRowNumber6.
    • CommentAuthorUrs
    • CommentTimeDec 14th 2023
    • (edited Dec 14th 2023)

    added pointer to:

    • Michael Faraday, Delienation of Lines of Magnetic Force by iron filings, §37 in: Experimental Researches in Electricity.–Twenty-Ninth Series, Philosophical Transactions of the Royal Society of London 142 (1852) 137-159 [doi:10.1098/rstl.1852.0012, jstor:108540]

    together with a scan of “Plate IX”, now here.

    (Grabbed the scan from Twitter: The resolution is not great, but still much better than what is behind the above official DOIs…)

    diff, v13, current

1 to 6 of 6

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