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Reply
| | | From: Kat (Original Message) | Sent: 6/8/2007 6:05 PM |
I Always Wondered About That
I was working in a scrap yard during summer vacation at engineering
university. I used to work repairing construction equipment. One
afternoon, I was taking apart a piling hammer that had some very
large bolts holding it together. One of the nuts had corroded on to
the bolt. To free it, I started heating the nut with an oxyacetylene
torch. As I was doing this, one of the dimmest apprentices I have
ever known came along. He asked me what I was doing. I patiently
explained that if I heated the nut it would grow larger and release
its grip on the bolt so I could then remove it.
"So things get larger when they get hot, do they?" he asked.
Suddenly, an idea flashed into my mind. "Yes," I said, "that's why
days are longer in summer and shorter in winter."
There was a long pause, then his face cleared. "You know, I always
wondered about that," he said.
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