"In the future, Goulielmakis hopes to produce light pulses of 24 attoseconds, the atomic unit of time, defined as how long it takes an electron to travel from one side of a hydrogen atom to the other.
But Marangos thinks even shorter pulses are possible. 'There's nothing magical about the atomic unit of time,' he says, saying zeptosecond pulses of trillionths of a billionth of a second might be possible. These would be capable of imaging the movement of nuclear particles like protons, says Marangos."
Whoa!
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