I couldn't find any TAGS that fit my question... I don't know if I'm doing this correctly.
I want to know how long a "twinkling of an eye" would be. A twinkling of an eye is the time it takes from the moment the light hits the front of the eye, until it hits the back of the eye and is reflected back.
I googled some stuff and found that an average human eye is about 26.6666667 mm
, so we'd double that to 53.3333334 mm
, this is the distance light must travel.
the speed of light is 299,792,458 M
per second, which is 299,792,458,000 mm
per second. (notice i took the speed of light from Meters to millimeters).
So, now do i divide 299,792,458,000 mm
by 26.6666667 mm
? if so, google says that's: (299 792 458 000 millimeters) / (53.3333334 millimeters) = 5.62110858 × 109
so how do I turn 5.62110858 × 109
into time, or... i'm confused.. The smallest amount of time is a plank, or, $10^{-43}$ seconds. How close would the 'twinkling of an eye' be to a plank?