HAWAII -USA
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The sand on this beach is black. That's because the sand is ground up lava which came from the volcano Mauna Loa. The sea pounds the lava chunks into little rocks and then pounds the little rocks into tiny pieces or sand. Black sand is much hotter than white sand when the sun shines on it because it absorbs the sun's energy while the white sand reflects it away. Black is not a color but the absence of reflected light. On sunny days a car with dark paint will be hotter inside than a car with light paint.
An object that absorbs all the energy that falls upon it is called a Blackbody. Because it reflects no light, it would appear black to an observer. (No perfect blackbody exists in nature, but surfaces coated with carbon black or soot absorb 97 percent of incident energy.) A blackbody is also a perfect emitter. At any specified temperature, a blackbody emits, in each part of the electromagnetic spectrum, the maximum energy obtainable from any radiator because of its temperature alone. Bud doesn't really understand that, he just read it somewhere and repeats it to impress people.
