The duration of a blink of an eye is about 2.78 × 10⁴² times planck time. Selected basis: approximate values.
ELAPSED TIME
Too small to see at this scale; the bar has not been widened.
Both timelines start together. Length measures elapsed time, not a physical distance.
5.391 × 10⁻⁴⁴ s - Time; theoretical.
Planck time is the theoretical shortest meaningful interval of time, defined using fundamental physical constants.
A theoretical scale, not an experimentally demonstrated smallest time step.
NIST — 2022 CODATA fundamental constants150 ms - Time; reference interval.
A blink of an eye is the quick closing and opening of the eyelid, usually happening involuntarily.
A chosen 150 ms interval, not a universal blink duration.
Defined examples — our methodology
There’s always another scale
TimePlanck time5.391 × 10⁻⁴⁴ sPlanck time is the theoretical shortest meaningful interval of time, defined using fundamental physical constants.TimeBlink of an eye150 msA blink of an eye is the quick closing and opening of the eyelid, usually happening involuntarily.TimeHuman lifetime80 yearsA human lifetime is the span from a person's birth to their death.
TimeAge of Earth4.54 GyrThe age of Earth is the time that has passed since the planet formed from the solar nebula.TimeAge of the universe13.8 GyrThe age of the universe is the time since the Big Bang, marking the beginning of cosmic expansion.Side by side
Illustrative artwork · not to scale
Illustrative artwork · not to scale
Illustrative artwork · not to scale
Illustrative artwork · not to scaleGot a good eye for scale?