Triangle Self Destruct ...
My father had a very old plastic drafting triangle sitting in a drawer, and when I was cleaning the drawer yesterday, I found the triangle had completely self-destructed into thousands of tiny pieces.Even the tiny pieces were themselves filled with tiny cracks. Another triangle from the same time period was also in the drawer, and it was yellowed but not cracked at all.I wonder what forces and conditions caused the crackup?
Triangle Self Destruct ...
My father had a very old plastic drafting triangle sitting in a drawer, and when I was cleaning the drawer yesterday, I found the triangle had completely self-destructed into thousands of tiny pieces.Even the tiny pieces were themselves filled with tiny cracks. Another triangle from the same time period was also in the drawer, and it was yellowed but not cracked at all.I wonder what forces and conditions caused the crackup?