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Find out how and where LED lightbars can be mounted legally on your 4×4.

http://www.ted.com What if every light bulb in the world could also transmit data? At TEDGlobal, Harald Haas demonstrates, for the first time, a device that could …

Watch the video and learn more the basic lighting terms such as intensity, flux, Illuminance, exitance, luminance and their measurements. Contact Us: Find more …


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