Beyond the Nanosecond

While computers live in nanoseconds, the fundamental processes of nature—like chemical reactions and the movement of electrons—happen on an even smaller scale: the **picosecond** (one-trillionth) and the **femtosecond** (one-quadrillionth).

The Picosecond (10^-12)

In one picosecond, light travels only 0.3 millimeters—about the thickness of a human hair. This is the timescale of molecular vibrations and the fastest electronic switches currently being researched for future "terahertz" computing.

The Femtosecond (10^-15)

Femtoseconds are the domain of "ultrafast" lasers. Scientists use femtosecond laser pulses to take "photos" of chemical bonds as they break and reform. It is effectively high-speed photography for the atomic world. If a femtosecond were one second, a single second would last 32 million years.

The Attosecond (10^-18) - The 2023 Nobel Prize

In 2023, the Nobel Prize in Physics was awarded for the development of **attosecond** pulses. An attosecond is so short that there are as many of them in one second as there have been seconds since the beginning of the universe (13.8 billion years). This allows us to observe the actual movement of electrons within an atom.

Conclusion

As we measure smaller and smaller slices of time, we move closer to the "Planck Time"—the theoretical limit of time itself. On the Epoch Clock, we provide the steady drumbeat, while these extreme scales reveal the frantic dance of the universe.