One of the mysteries of the English language finally explained.
- ‘A femtosecond is a millionth of a billionth (or one quadrillionth) of a second.’
- ‘With the neutrons traveling much, much faster, I estimate about 28 percent of the material will go critical in that quadrillionth of a second.’
- ‘In addition, LCLS X-ray pulses will be extremely short - lasting only femtoseconds, mere quadrillionths of a second.’
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