The researchers from Frankfurt, together with colleagues from Berlin and Hamburg, succeeded in determining the smallest time span ever measured, as the Frankfurt Goethe University announced.
The time span is incredibly short and lies in the range of so-called zeptoseconds.
A zeptosecond is therefore a trillionth of a billionth of a second long.
The researchers measured how long it takes a light particle to traverse a hydrogen molecule - about 247 zeptoseconds.