- Apr 22, 2009
- Reaction score
- Port Angeles, WA
"...I guess that's probably because of the sun heating it enough to slowly undo the changes?"Thanks for the article! Yeah same, I only thought you could get two colours through irradiation. And I had heard references to it being reversible, but was never sure how true that was. I never would have imagined that it would reverse on its own, I guess that's probably because of the sun heating it enough to slowly undo the changes?
That would be my guess, though I wonder if the color would revert even if irradiated glass was stored in a dark, cool place?
I had read about the color reversal process years ago. At the time, I got the impression that significant temperature (on the order of several hundred degrees) was required, but I can't say that I actually recall specifics.
Perhaps some physicist or chemist among the ranks visiting this forum will elucidate for us.