How did Muhammad peace be upon him know about black body radiation?

When the scientist studied the fire and the relation between its color and the heat degree, they discovered that it was red, and then when we increase the heat degree it became white, but when we increase the heat more, then we will have a black fire, the scientists called this phenomenon as the radiation of the black body, the wonder that our prophet referred to the phenomenon of changing the fire's color as he said in the holy Hadith:

●[The (hell) fire was kindled for thousand years until it reddened, then it was kindled another thousand years until it whitened, moreover it was kindled thousand years until it blackened, so that it is dark black].
[Narrated by Termizhi].

●The Prophet of Islam said:
“Fire as we know it is one seventieth part of the Fire of Hell. Someone said, ‘O Messenger of God, it is enough as it is!’ He said, ‘It is as if sixty-nine equal portions were added to fire as we know it.’” (Saheeh Al-Bukhari)

●The prophet peace be in him said, “Hellfire is black and dark like night.” (Bayhaqi)

●“Those burning in hell fire could find the fire in world; they would sleep and rest in it.”
Malik related to me from his paternal uncle Abu Suhayl ibn Malik from his father that Abu Hurayra said, "Do you think that it is red like this fire of yours? It is blacker than tar." (Malik, Book 57, Hadith 57.1.2)

â–ªTo learn about Black body radiation search Wikipedia for black body radiation And click on "explanation".

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