Is there a shorter measurement of time than a nanosecond, if so what is it called & how do you calculate it?

Answer 1

A Planck's time 5*10^--44 second. The smallest units of time you can imagine
n physics, the Planck time (tP), is the unit of time in the system of natural units known as Planck units. It is the time it would take a photon travelling at the speed of light in a vacuum to cross a distance equal to the Planck length.[1] The unit is named after Max Planck.

It is defined[1] as

t_P = \sqrt{\frac{\hbar G}{c^5}} \approx 5.39121(40) \times 10^{-44} \mbox{ s}

where:

\hbar = h / 2 \pi is the reduced Planck constant
G is the gravitational constant
c is the speed of light in a vacuum
tP is in seconds.
The two digits between the parentheses denote the uncertainty in the last two digits of the value.

Answer 2

The shortest fraction of time is Planck time which is something like 10^-44 of a second. But that's not measurable, more theoretical.

The shortest measurable fraction of a time is an attosecond(10^-18). They calculated it by measuring the time it took light to travel through 3 hydrogen atoms.

Answer 3

There are several, actually:

picosecond, ps -- 1/1,000,000,000,000 of a second (10^-12)
femtosecond, fs -- 1/1,000,000,000,000,000 of a second (10^-15)
attosecond, as -- 1/1,000,000,000,000,000,000 of a second (10^-18)
zeptosecond, zs -- 1/1,000,000,000,000,000,000,000 of a second (10^-21)
yoctosecond, ys -- 1/1,000,000,000,000,000,000,000,000 of a second (10^-24)

(These, of course, are rarely used.)

The SI prefixes denote a certain quantity or fraction of that specific unit (e.g., "milli-" stands for "thousandth," so a 1000 milliseconds = 1 second). It helps to know that each prefix stands for a certain multiple (or "submultiple") of ten. The attosecond, for example, is 10 raised to the -18th power.

Answer 4

Hi. Yes, many. A femtosecond is one useful one. It is one quadrillionth of a second; one thousandth of a nanosecond.

Answer 5

a picosecond = 10e-12 s
a femtosecond = 10e-15s

Answer 6

... half a nanosecond

Answer 7

you posted that a zeptosecond before i could.

Answer 8

picosecond?