LIGHT and COLOR

 REMEMBER: 'CLICK' on [CC] so you can read the words, and slow down the SPEED using the ⛭[settings] if you would like.

Bill Nye -Light and Color

What is the Blackest Black?

REMEMBER: 'CLICK' on [CC] so you can read the words, and slow down the SPEED using the ⛭[settings] if you would like.

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