Amazing Week, Day 7: Quartz timekeeping

My first watch was a Timex. It looked like this: It was crap, to be honest. If I remembered to wind it and set it in the morning when I got up, it would generally be no more than a minute or two wrong by the end of the day. A few years later, watching Tomorrow’s World on TV, I heard about a new technology: quartz crystal watches. In a quartz clock, electrical current is applied to a crystal of quartz.