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Notices by j_bertolotti@mathstodon.xyz

  1. j_bertolotti@mathstodon.xyz's status on Friday, 10-Mar-2023 13:16:43 CET j_bertolotti j_bertolotti

    #PhysicsFactlet #WorkinProgress
    Need to explain students about fixed points in dynamical systems, and I am making a plot of the most common cases (still not sure whether animating it would make it more or less understandable).
    #Visualization #Physics

    In conversation Friday, 10-Mar-2023 13:16:43 CET from mathstodon.xyz permalink

    Attachments


    1. https://media.mathstodon.xyz/media_attachments/files/109/993/767/199/452/332/original/3b5c8734bd6974a8.jpeg
  2. j_bertolotti@mathstodon.xyz's status on Friday, 10-Mar-2023 13:16:42 CET j_bertolotti j_bertolotti
    in reply to

    #WorkInProgress
    The animated version of the one above.
    Not yet satisfied with it.

    In conversation Friday, 10-Mar-2023 13:16:42 CET from mathstodon.xyz permalink

    Attachments


  3. j_bertolotti@mathstodon.xyz's status on Friday, 10-Mar-2023 13:16:42 CET j_bertolotti j_bertolotti
    in reply to

    #WorkinProgress
    An alternative take (this definitively needs to be animated to work).

    In conversation Friday, 10-Mar-2023 13:16:42 CET from mathstodon.xyz permalink

    Attachments


    1. https://media.mathstodon.xyz/media_attachments/files/109/998/452/549/377/350/original/19991f19dabb444e.jpeg
  4. j_bertolotti@mathstodon.xyz's status on Tuesday, 14-Feb-2023 10:38:21 CET j_bertolotti j_bertolotti

    #PhysicsFactlet
    Rutherford scattering: At the beginning of the XX century it was accepted that atoms were a thing, but what an atom looked like was still an open question. An important piece of this puzzle was the realization that, if you shoot charged particles at a thin piece of material, most of them passed through with little to no deflection, but a few were scattered at very high angles, suggesting atoms' positive charge is concentrated in a small volume.
    #Physics #Visualization

    In conversation Tuesday, 14-Feb-2023 10:38:21 CET from mathstodon.xyz permalink

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  5. j_bertolotti@mathstodon.xyz's status on Friday, 23-Dec-2022 12:47:24 CET j_bertolotti j_bertolotti

    2022 has been a very (very) bad year for me. Hoping 2023 is going to be a bit better.

    In conversation Friday, 23-Dec-2022 12:47:24 CET from mathstodon.xyz permalink
  6. j_bertolotti@mathstodon.xyz's status on Wednesday, 21-Dec-2022 15:13:08 CET j_bertolotti j_bertolotti

    #PhysicsFactlet
    Usually to form an image you illuminate your object uniformly and then collect the light with a pixellated camera. But since Maxwell equations are reciprocal, we can swap the role of the camera with the illumination, and use a patterned illumination, and a detector without any spatial resolution.
    This technique is called "ghost imaging" and it is mostly useful in those cases when pixellated cameras are hard to come by (e.g. for THZ radiation).
    #Physics #Optics #Visualization

    In conversation Wednesday, 21-Dec-2022 15:13:08 CET from mathstodon.xyz permalink

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  7. j_bertolotti@mathstodon.xyz's status on Tuesday, 29-Nov-2022 16:13:39 CET j_bertolotti j_bertolotti

    "Girl with a sinusoidal earring"
    #Sinusoidals #Art?

    In conversation Tuesday, 29-Nov-2022 16:13:39 CET from mathstodon.xyz permalink

    Attachments


    1. https://media.mathstodon.xyz/media_attachments/files/109/427/736/103/670/631/original/6574cfd13d833e86.png

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    j_bertolotti

    j_bertolotti

    Associated Professor of Physics at the University of Exeter.Scientific visualizations (grouped under the hastag #PhysicsFactlet).He/lui/on. All opinions are my own fault.

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