illuminating a focal point fresnel lens parabolic mirror Double the focal length part 1

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  • Published on:  Monday, September 9, 2013
  • See the focal point of a fresnel lens and a parabolic mirror.
    This is a video from 2008. Youtube allowed the rights of the original 2008 video to be stolen by a 3rd party music company. The ROYALTY FREE MUSIC WAS FROM GARAGEBAND. NEVER USE GARAGEBAND FOR ANYTHING ON YOUTUBE.

    The GarageBand software license agreement says:

    "GarageBand Software. You may use the Apple and third party audio loop content (Audio Content), contained in or otherwise included with the Apple Software, on a royalty-free basis, to create your own original music compositions or audio projects. You may broadcast and/or distribute your own music compositions or audio projects that were created using the Audio Content, however, individual audio loops may not be commercially or otherwise distributed on a standalone basis, nor may they be repackaged in whole or in part as audio samples, sound effects or music beds."

    So don't worry, you can make commercial music with GarageBand, you just can't distribute the loops as loops.

    Last Modified: Aug 27, 2008
  • Source: https://youtu.be/xyKjYvBXBiw
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  • André Jaf

    André Jaf

     3 months ago

    water working like a barlow ...uhmmm

  • Dushyant Singh

    Dushyant Singh

     a years ago

    How to find the concentration ratio?? can you please tell about it in detail.

  • masacatior

    masacatior

     2 years ago

    Which one have the most concentrated focal point?

  • John Smith

    John Smith

     2 years ago

    Turning a light into a spotlight was cool, and the second half of the video is so beautiful :)

  • Sitaifun Mac

    Sitaifun Mac

     5 years ago

    Not quite sure I understand the youtube music licensing issue; sounds like anyone can claim ownership of any music not currently owned as viewed by youtube's automated license-checking software.  If so they really need to address that.  At any rate, I like this source of royalty-free audio loops:  http://incompetech.com/music/royalty-free

  • Canoon Canoon II

    Canoon Canoon II

     5 years ago

    How did you get the light at night?

  • ytugtbk

    ytugtbk

     6 years ago

    Wonder what the neighbors think.

  • Didier Khwartz

    Didier Khwartz

     6 years ago

    Wery Well Done for the focal point teaching :)

  • GREENPOWERSCIENCE

    GREENPOWERSCIENCE

     6 years ago +4

    See the focal point of a fresnel lens and a parabolic mirror.

  • GREENPOWERSCIENCE

    GREENPOWERSCIENCE

     6 years ago

    HVLP works good too. Serious sprayer $ nice.

  • Davy van Oss

    Davy van Oss

     6 years ago

    with panning to the other side, and if you still have some sound left, add and remove a white noise, with remove hiss, or just put some music over it that your neighbour cousin whatever made, with a promise on paper that it is free for you to use, and you share rights.
    I dunno but the covers i made but if you like any of my self composed music, I hereby declare that greenpowerscience can use it for free.
    davy van oss, nijmegen, 14-9-2013.
    ps: maybe i can make some suitable instrumental music 4 u

  • Davy van Oss

    Davy van Oss

     6 years ago

    and i have a solution for your problem!
    a lot of audio editting programs even such as the latest free to get ´´audacity,, has a 3band compressor in its plug ins,
    this allows you to zero in on your own audiogram, wich is your voice, and is somewhere between about 200 hertz till 6000 hertz,
    you basically cut all frequencies of below and above that rate, you will still hear some of what of that sound, maybe its panned left or right, enhance stereo width with for example magix, get rid of it.

  • DystopianEmpire01

    DystopianEmpire01

     6 years ago

    Ever heard of Kevin McLeod? Check him out. I'm sure you'll appreciate his generous nature.

  • Sam Strobel

    Sam Strobel

     6 years ago

    So awesome

  • Robert Dunn

    Robert Dunn

     6 years ago

    Cool video thanks Dan

  • Mike Sheppard

    Mike Sheppard

     6 years ago

    The last comment idiot obviously has never seen dans beautiful wife!

  • Mike Sheppard

    Mike Sheppard

     6 years ago

    I've watched everyone of your videos Dan! This is real entertainment!

  • Rick Stewart

    Rick Stewart

     6 years ago

    Loved it. I already knew what a focal point was and why it is but, this was pretty cool all the same. Keep the vids coming Dan.

  • Gilbert S

    Gilbert S

     6 years ago

    Great video !!!!

  • Josh Carmack

    Josh Carmack

     6 years ago

    Well, at least you are aware of the problem, and always remeber, there are no dumb questions. Asking is how you learn.