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A millisecond is a thousandth of a second, and a nanosecond is a billionth of a second, but there’s another measurement of time that makes both of them look slow. 

Scientists have for the first time been able to measure something in a zeptosecond, or a trillionth of a billionth of a second.

Laser physicists in Munich fired an extreme ultraviolet light pulse onto a helium atom to excite the electrons, causing one to break free ― a process called photoemission. At the same time, they shot an infrared laser pulse to detect the electron as it left the atom.

That’s when it happened. 

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M Ossiander TUM M Schultz MPQ
This image shows a photon removing an electron from a helium atom, with the remaining electron most likely near the bright nucleus. 

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Click link below for article and slideshow:

http://www.huffingtonpost.com/entry/zeptosecond_us_582be255e4b0aa8910bdb138

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