Black body, Kardashev Scale Wiki

A black body is an object that absorbs all electromagnetic radiation, or all colors of light. It emits electromagnetic black-body radiation at Planck scales. A black hole absorbs all the light that hits its event horizon, reflecting nothing, making it almost an ideal black body. Hawking radiation is black-body radiation that is released by black holes because of quantum effects near the black hole event horizon. The universe approximately a second after the Big Bang was a near-ideal black body a

Starting up space industry and solar system civilization

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If we divided the various science fiction universes into leagues based on the Kardashev scale and pitted them against one another, which universe would win each league? - Quora

What is Kardashev's scale for civilizations? Are there any examples of civilizations from science fiction that are similar to types I-III? - Quora

File:Black body.svg - Wikipedia

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Absorbed: What it Means, How it Works, Examples

Why does black absorb heat or get hot?

Are there any liquid materials that absorb heat, other than having a current running through them? - Quora

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Scientists discover ultra-black fish that absorbs 99.5% of light