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hii
by Anonymous - Thu 25 Dec 2025 02:06:AM
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#226458
Tue 03 Jun 2014 03:41:PM
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Joined: Feb 2001
Posts: 381,904
Launch Director
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OP
Launch Director
Joined: Feb 2001
Posts: 381,904 |
Leonardo da Vinci's iconic self-portrait, drawn in the 16th century, is vanishing as the work of art 'yellows' with age. By studying chromophores, the yellowing agents that form within cellulose during the oxidation process, a group of researchers has developed a nondestructive way to determine the state of degradation of ancient documents and works of art.  Source: Vanishing da Vinci: Nondestructive way to determine state of degradation of ancient works of art
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