quadrillionth การใช้

• A femtosecond is one-quadrillionth of a second.
• His research has helped to better understand processes that occur in ultrafast time frames of 1 quadrillionth of a second.
• The highest calculation, the one quadrillionth digit, took 1.2 million CPU hours and 1, 734 computers from 56 different countries.
• This formula permits one to fairly readily compute the " k " th quadrillionth bit of ( which turns out to be 0 ).
• While the emissions were far stronger than expected, the amount reaching Earth was still vanishingly small _ about one-quadrillionth of a typical dental X-ray.
• The result is devices that may detect new forces of nature by measuring incredibly small phenomena, and with greater precision than ever before, perhaps in trillionths of a meter or quadrillionths of a second.
• One, called PiHex, is currently calculating the quadrillionth bit of Pi, according to its Web site ( www . cecm . sfu . ca / pr4ojects / pihex / pihex . html ).
• But the radio signals, which come from satellites, have a strength of less than one-quadrillionth of a watt when they reach the receiver; a transmitter of only several watts can block the signals from large area.
• Between 1998 and 2000, the distributed computing project PiHex used Bellard's formula ( a modification of the BBP algorithm ) to compute the quadrillionth ( 10 15 th ) bit of, which turned out to be 0.
• Roughly speaking, jamming would involve filling the satellite's radio channel with electronic noise that effectively drowns out the relatively weak navigational signal emitted by the satellite _ a mere whisper at one-tenth of one quadrillionth of a watt.
• Quigley said someone exposed to a millionth of an ounce of the material would inhale " 1 / 23 of a quadrillionth of a gram of plutonium, corresponding to an estimated increase in fatal cancer risk of about one in 13 trillion ."
• In September 2010, a Yahoo ! employee used the company's Hadoop application on one thousand computers over a 23-day period to compute 256 bits of at the two-quadrillionth ( 2?0 15 th ) bit, which also happens to be zero.
• When a number represents a quantity rather than a count, SI prefixes can be used thus " femtosecond ", not " one quadrillionth of a second "  although often powers of ten are used instead of some of the very high and very low prefixes.
• Blood tests showed that children with mothers who did not smoke and no other regular smokers in the household had mean levels of polyaromatic hydrocarbons of 0.15 femto-moles per microgram . ( A femto-mole is a quadrillionth of the amount of a substance having a weight in grams equilavent to its molecular weight .)