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ÂÂ 2013-11-28, 06:18 PM #183
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ÂÂ 2013-11-28, 08:01 PM #184
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ÂÂ 2013-11-28, 08:43 PM #185
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http://en.wikipedia.org/wiki/Heinrich_Hertz

In 1930 the International Electrotechnical Commission (IEC) honored Hertz by naming the unit of frequency¡Xone cycle per second¡Xthe "hertz"
ÂÂ 2013-11-28, 11:07 PM #186
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ÂÂ 2013-11-29, 06:57 AM #189
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V=m/s ¦³¨S¦³¤H´±¼g ³t²v=¤½¤Ø X ÀW²v ?

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http://en.wikipedia.org/wiki/Heinrich_Hertz

In 1930 the International Electrotechnical Commission (IEC) honored Hertz by naming the unit of frequency¡Xone cycle per second¡Xthe "hertz".

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