It is well known that a stopped clock gives the exact time twice a day, while a clock that gains or loses time may not be right more than once over a period of months.

My clever father adjusted his clock to give the correct time at least twice a day, while running at the normal rate.

Assuming he was not able to set it perfectly (a reasonable assumption) how did he do it?

He simply put something in backwards so that while the hands ran at the normal rate, they ran backwards? This would have them show the right time four times a day, but the only requirement was at least two times a day...

Posted by Tiralmo on 2005-06-24 04:39:14