When I have asked an audience this question they have looked at me incredulously and said, “Starting time?” They realize that you cannot know how long the swimmer took unless you knew the time on the wristwatch when the race started.
The information on this site can change lives—former atheists tell us so. Because it’s information people haven’t heard before.
So keep it coming by supporting the researchers and writers at CMI. If you know how far something traveled and the rate at which it traveled then you can find how long it took.
Keep that in mind when you think about working out the age of something. Actually, knowing the starting time is still not enough.
During the race you have to watch the swimmer and count how many laps he has swum so you know that he has done 1,500 metres.
You could describe the atomic workings of the quartz oscillator and how it resonates at a specific and highly stable frequency, and how this is used to accurately pace a timekeeping mechanism.