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Polarized Light Display Box - Civil Defense Warning Signals

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Uploaded by on Mar 28, 2009

A low quality video without sound of my polarized light display box with a civil defense warning signals transparency. The box uses a motorized wheel with polarized film on it in front of a round lamp. The moving wheel causes the polarized film attached the certain areas of the transparency to appear to move behind the transparency resulting in an animated affect.

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Entertainment

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Standard YouTube License

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Top Comments

  • It pictures teh thunderbolt..

  • Do you have a video of what it looks like inside?

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All Comments (5)

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  • my alert system doesnt use attack tone they use a 3min alert for emergencys for the nuke plant tornadoes and terrorist attacks. they uses a 30sec to 1min blast for fires and tests that happen all the time and they use one for parades to begin

  • i no above the alert siren it sayz: 3-5 MINUTE STEADY BLAST and below the attack siren it sayz: 3 MINUTE WAILING TONE but wut duz the yellow writingz below those sayingz say?

    i couldn't tell

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