Andy:
I know you can tell I am in a cynical mood these days. Must have something to do with the holidays. (humbug)!!
When I was a kid (long ago), my late father was head of Analytical Research for the defunct Republic Steel Company.
He use to bring the neatest gadgets home for me and (him) to play with. I remember rolling the balls of mercury around on the concrete basement floor. I asked my dad why the mercury was liquid and he told me that it was because at room temperature it was in a liquid state just like steel would be in a liquid state at 3,000 degrees. I guess he never concerned himself with the fact that the liquid mercury was actually vaporizing into the air.
One day, my father brought some laboratory pure iodine home. Iodine crystals are extremely volatile so it must be kept in a liquid state with distilled water. In comparison, the iodine that you buy at the pharmacy for cuts is about 1/1000 the concentration of what my dad had.
He brushed a small amount of the liquid iodine on the porch railing in the sun. It dried almost instantly. He told me to watch when a bug landed on the crystallized iodine. It only took about a minute before a fly landed on the iodine and BANG--no more fly.
I remember my dad bringing home lab grade Carbon Tet. It is positively the best degreaser known to man. Fantastic for getting grease stains out of clothes. Too bad it's also lethal.
My dad was one of the pioneers in the use of Teflon for lab apparatus. Unfortunately, RSC had the right to all his inventions as he was a company employee.
His tinkering with Teflon in his basement shop got me interested in tool and die making. I used to help him turn and machine blanks of solid PTFE Fluorocarbon over 40 years ago. I remember that we used to save all the swarf. We meticulously swept it up and returned it to the manufacturer. My dad always told me it was very expensive. I bet it was, 40 years ago. I had no inkling that, in about 25 years, Teflon ( which is DuPont's market name for PTFE Fluorocarbon) would effect our daily lives as much as it does.