Wednesday February 8 2012
Introduction to Light Emitting Diodes

Using LEDs as a way to get started learning about electricity.


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LED

Those LEDs that you have are just white with a color coating not true colored LEDs. !great videos thanks!

Why the sky is blue

why is the sky blue????

Hi Robort Krampf, I was wondering why is the sky blue?

thanks Barefoot Clan

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