Heat can be radiated as black body radiation, that is infra red radiation and therefore photons aka light, juts a lower wavelength.
But regula heat transfer is done by molecules bumping into each other.
So the suns light is black body radiation, just super intense. And it heats your shirt, but a black shirt will reflect less light so it will absorb more heat.
But heat and infra red is not allways the same.
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