1400 years ago nobody knew about the Celsius scale however we found its equivalent in the Quran. The melting point of silver in Celsius is the same number of verses between the two occurrences of "the silver الْفِضَّةَ".
Getting the melting point of silver from google:
The melting point of silver is 962 degrees Celsius. This was known recently, however this was portrayed in the Quran 1400 years ago. "The silver الْفِضَّةَ" appears twice in the Quran.
Quran 3:14 "Adorned for the people is the love of desires, such as women, and children, and piles upon piles of the gold and the silver, and branded horses, and livestock, and fields. These are the conveniences of the worldly life, but with Allah lies the finest resort."
The second instance of "the silver الْفِضَّةَ" is mentioned with the heating of Hell.
Quran 9:34-35 "O you who believe! Many of the rabbis and priests consume people's wealth illicitly, and hinder from Allah’s path. Those who hoard the gold and the silver, and do not spend them in Allah’s cause, inform them of a painful punishment. On the Day when they will be heated in the Fire of Hell, then their foreheads, and their sides, and their backs will be branded with them: “This is what you hoarded for yourselves; so taste what you used to hoard.”
The two occurrences of "the silver الْفِضَّةَ" are separated by 962 verses.
From Quran Characters Counter:
1269 -- 307 = 962