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Thread: Anyone good with physics?

  1. Sep 14th, 2004, 12:50 AM #1
    mendhak
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    Anyone good with physics?

    Check out this link

    What's the explanation for that coloring sequence and the bright area at the center?
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  2. Sep 14th, 2004, 02:02 AM #2
    dglienna
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  3. Sep 14th, 2004, 02:58 AM #3
    mendhak
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    Hmm... server seems to be down. Here is the picture.

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  4. Sep 14th, 2004, 05:29 AM #4
    Acidic
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    What is that photo of?
    Have I helped you? Please Rate my posts.
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  6. Sep 14th, 2004, 05:34 AM #5
    mendhak
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    It's originally from this link:

    http://mit.edu/8.03/www/

    Description

    This is a picture of me, by me. Have you ever seen anything like it? Any idea of what causes the colored rings? If you do, send me a note and you may earn some extra course credit. If you want to find out, make sure not to miss my lecture on December 7!
    Then he signs his name off as "\\/\/////@lter Lewin"

    Who knew, MIT professors were t3h Ub@R 1337!!11.
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  7. Sep 14th, 2004, 02:58 PM #6
    wossname
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    Its called "Lens Flare". Its when a bright light enters a lense at a weird angle and causes refraction patterns right across the lens. The only "visible light" part of the spectrum is halfway between the centre of the lens and the outer edge. Since lenses are usually circular, the refraction pattern is also radial and thus a circular rainbow is formed.

    Do not look at the sun through binoculars, because you'd see this effect REALLY BRIGHTLY!!!!

    Any questions?
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  8. Sep 14th, 2004, 03:01 PM #7
    wossname
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    PS. if you want me to be a real smartass, on that picture, the Infrared side of the spectrum is outside the 'ring' and the ultraviolet side is inside it.
    I don't live here any more.
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  9. Sep 14th, 2004, 03:04 PM #8
    wossname
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    I suspect that the shadow of the photographer was superimposed onto a photo of a very bright object (maybe some burning magnesium or an arkweld kit) Which explains why the light source is not visible.

    Not 100% sure though.
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  11. Sep 14th, 2004, 10:25 PM #9
    alkatran
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    My answer: photoshop
    Don't pay attention to this signature, it's contradictory.
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  12. Sep 14th, 2004, 11:59 PM #10
    mendhak
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    Originally posted by wossname
    Its called "Lens Flare". Its when a bright light enters a lense at a weird angle and causes refraction patterns right across the lens. The only "visible light" part of the spectrum is halfway between the centre of the lens and the outer edge. Since lenses are usually circular, the refraction pattern is also radial and thus a circular rainbow is formed.

    Do not look at the sun through binoculars, because you'd see this effect REALLY BRIGHTLY!!!!

    Any questions?
    You better join MIT soon, boy.
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  13. Sep 15th, 2004, 05:39 AM #11
    wossname
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    Elementary my dear Mendhak.
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  14. Sep 15th, 2004, 09:49 AM #12
    Ecniv
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    Hmm Thought it was an eclipse of some sort... but makes more sense... Reflection of some glass structure...

    Photoshop one seems the best.


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