Herong's Notes on Physics - Version 3.21, by Dr. Herong Yang
List of Various Durations
This section lists various durations to give us a sense of scale about time.
The list below provides some reference durations to give us a sense of scale about time:
230 million years - Duration of Solar System orbiting a circle 1 year - Duration of Earth orbiting a circle around Run 27.3 days - Duration of Moon orbiting a circle around Earth 1 day - Duration of Earth rotating a circle around axis 8.28 minutes - Duration of light traveling from Sun to Earth 9.58 s - World record of time for men to run 100 meters 2 s - Duration of a 1-meter long pendulum swing a period 0.75 s - Average duration of between 2 human heartbeats 20 ms - Duration of a hummingbird wing flapping time 3 ms - Duration of a housfly wing flapping time 0.4 ns - Duration of cycle time of my 2012 laptop processor 2.5 fs - Duration of oscillation period of red light
Last update: 2014.
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