Notre Dame
Jul. 12th, 2020 03:45 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
charisstomahttps://eliteherald.com/anthropology-and-history/places/as-scientist-investigated-notre-dames-charred-remains-uncovered-disturbing-secret/11/?utm_source=Taboola&utm_medium=CPC&utm_content=democraticunderground_1036605&utm_campaign=D5_92028_Elite-Herald_As-A-Scientist-Investigated-No_US_DESKTOP_DZ&utm_term=5209025&l=a
At between 570°F and 750°F, for example, the iron inside the limestone decomposes, leaving behind a layer of red. And as temperatures rise even further, the color shifts to black. Ultimately, at around 1,500°F, the blocks are little more than powder. Armed with this knowledge, then, researchers have been able to determine the sturdiness of individual stones simply by evaluating their color.
At between 570°F and 750°F, for example, the iron inside the limestone decomposes, leaving behind a layer of red. And as temperatures rise even further, the color shifts to black. Ultimately, at around 1,500°F, the blocks are little more than powder. Armed with this knowledge, then, researchers have been able to determine the sturdiness of individual stones simply by evaluating their color.
