Subject: Measuring time down to 1.7 trillionths of a second
I thought this was interesting...

https://www.sciencealert.com/s...

Scientists Found an Entirely New Way of Measuring Time

Determining the passage of time in our world of ticking clocks and oscillating pendulums is a simple case of counting the seconds between 'then' and 'now'.

Down at the quantum scale of buzzing electrons, however, 'then' can't always be anticipated. Worse still, 'now' often blurs into a haze of vagueness. A stopwatch simply isn't going to work for some scenarios.

A potential solution could be found in the very shape of the quantum fog itself, according to a 2022 study by researchers from Uppsala University in Sweden.

Their experiments on the wave-like nature of something called a Rydberg state revealed a novel way to measure time that doesn't require a precise starting point.

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