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Thread: Perfect black material

  1. #1 Perfect black material 
    Forum Professor Pendragon's Avatar
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    A method of melting tiny parts of surfaces with laser pulses makes them so irregular that they absorb nearly all light, making them nearly perfectly black. A New Scientist article mentions as possible uses improved Stealth capabilities for planes and ships and improved solar collectors, and even better hydrogen energy-storage devices.

    So if the laser is small enough (or in short enough bursts), it should be possible to make material so light absorbent that a human eye couldn't see the difference between this and perfect blackness. I really wonder what that would look like :wink: And imagine cloths treated in this way, it wouldnt create invisibility, but it would be a very impressive way to disguise yourself.


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  3. #2  
    Forum Professor captaincaveman's Avatar
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    It'll be pretty good when they can cover areas faster(and therefore cheaper)but thats got so many possiblitys. Pretty amazing


    are there any pics of the equipment or results?


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  4. #3  
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    I wanna paint a big black circle in the middle of the M25, I can see the headlines now:-

    "Large hole appears in M25 - Police are looking into it"
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  5. #4  
    Forum Professor Pendragon's Avatar
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    hehe :wink:

    Yea about the results, I haven't seen any pictures yet. So if someone knows where to find them, please share.
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  6. #5  
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    Just erm.... what do you expect to see in this picture of perfect black? :wink:
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  7. #6  
    Forum Professor captaincaveman's Avatar
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    i wanna see the equipment in action. how long before this becomes a useful sensible priced technology? These are the kinda things that i really love about science
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  8. #7  
    Forum Professor Pendragon's Avatar
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    yea I'd love my total-blackness coat 8)
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  9. #8  
    Forum Freshman K.I.T.T.'s Avatar
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    as long as they will not produce a black hole, it hears well...
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  10. #9  
    Forum Freshman Kosta's Avatar
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    Wow...cool stuff
    In order to make an apple pie from scratch, you must first create the Universe. - Carl Sagan
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  11. #10  
    Forum Sophomore Kabooom's Avatar
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    I was wondering if a perfect black was possible the other day in CAD. In CAD, or at least Rhinoceros 3D, if you make something pure black it doesn't shade at all. So I was thinking about what an object would look like in real life. I guess all you would see is the outline of the shape. Also I would think if you left this out in the sun it would have to get pretty hot absorbing all that light.
    WHAT?!
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  12. #11  
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    What's perfectly black? A black hole. While it isn't a metal, that's as close to "perfectly black" as you will get substance wise. So, really, this shouldn't be called perfectly black. :P
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  13. #12  
    Forum Sophomore Kabooom's Avatar
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    I think that's why it's nearly perfect black. I would have to imagine it to be pretty hard for any material to absorb 100% of light. Is there any material that absorbs 100% of anything on the EM spectrum?
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  14. #13  
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    Quote Originally Posted by Kabooom
    I think that's why it's nearly perfect black. I would have to imagine it to be pretty hard for any material to absorb 100% of light. Is there any material that absorbs 100% of anything on the EM spectrum?
    NO - [well not that we know of] if there were, military jets would be painted with it, thus not reflecting any radar EM source.

    black holes are not black, they could be pink for all we know with little flowers painted on them since they do not emit light we can't tell!
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