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attosecond

(n): one quintillionth (10^-18) of a second; one thousandth of a femtosecond

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3 months ago whichbe said:

0,000 000 000 000 000 001 of a second ("as")

about 1 year ago reesetee said:

one quintillionth of a second

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reesetee (14852 words)

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