Time (chronology), time systems and standards

What is time?

Harrison Decoded: Towards a Perfect Pendulum Clock brings together the output of a forty-year collaborative research project that unpicked and put into practice the fine details of John Harrison's extraordinary pendulum clock system.

What is the origin of the universe?

What is the origin of the universe?

What can we learn about the world from engaging with fictional time-series?

Modern physics has revealed the universe as a much stranger place than we could have imagined.

Timekeeping is an essential activity in the modern world, and we take it for granted that our lives are shaped by the hours of the day.

Why do we measure time in the way that we do?

The system of numbering the years AD (Anni Domini, Years of the Lord) originated with Dionysius Exiguus.

Timekeeping is an essential activity in the modern world, and we take it for granted that our lives are shaped by the hours of the day.

Modern physics has revealed the universe as a much stranger place than we could have imagined.

Why do we measure time in the way that we do?

This book is about how big is the universe and how small are quarks, and what are the sizes of dozens of things between these two extremes.

This book is about how big is the universe and how small are quarks, and what are the sizes of dozens of things between these two extremes.

Our engagement with time is a ubiquitous feature of our lives.

From one-celled paramecium to giant blue whales, we all have internal clocks that regulate the rhythms we live by.

Throughout the history of philosophical theology, scholars have reflected on the relationship between God and time.

This is a book about the meaning of time, what it is, when it has started, how it flows and where to.

Why are there morning people and night people?