| 41. | Monitor refresh rates are measured in hertz, or cycles per second, and rates of 60, 67 and 75 hertz are most common.
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| 42. | For instance, some nerves respond to the middle A on the piano, which vibrates at 440 Hertz, or 440 cycles per second.
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| 43. | Intel's Pentium 4 processor clocks at speeds up to 1 . 7 gigahertz, which is more than a billion cycles per second.
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| 44. | The electrical system was converted from 25 Hertz ( cycles per second ) to 60 Hertz and over 200, 000 meters were replaced.
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| 45. | The instruments record minute pressure changes caused by infrasound, or sound waves below about four cycles per second that are inaudible to humans.
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| 46. | However, low-end circuitry rarely allows the vertical refresh rates beyond 75 hertz ( cycles per second ) that flicker-sensitive souls like me prefer.
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| 47. | The transistor, a primary component in microchips, uses a modified design to run at speeds of 350 gigahertz, or billion cycles per second.
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| 48. | The same kind of binding mechanism may exist for the entire brain at a faster frequency of 40 cycles per second, Llinas said.
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| 49. | In the interests of civility and uniformity, the music world has long since agreed that the note A equals 440 cycles per second.
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| 50. | Further work pushed this system to 50 kW, producing 10 kW of microwaves at a pulse repetition frequency of 2500 cycles per second.
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