This need was a major motivation for the development of accurate mechanical clocks.

There exists a very accurate clock in the mind.

Now suppose some people are on a big spaceship and they want to make a very accurate clock.

Today, highly accurate clocks can measure times less than a billionth of a second.

This is the idea that every 30 seconds the code changes, and it's just - you need to have an accurate clock.

Without an accurate clock, it was impossible to fix her.

No, probably not, although Young Sam appeared to have a very accurate internal clock.

Huygens designed more accurate clocks than were available at the time.

"A couple of people have told me I have a pretty accurate internal clock."

When an accurate clock showed these hours it virtually never had to be adjusted.