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fq News'Mother rocket' causes fire in Vigan (Philippine News Agency)VIGAN CITY, Jan. 2 (PNA) -- Investigators of the Vigan Fire Station said the fire that gutted a two-storey grocery store here on December 31 that burned and killed its owner, was ignited by a "mother rocket" bomb. Read more...How To Enhance Non-thermal Effects Of Ultrasound (Medical News Today)In recent years HIFU has been widely used for the treatment of solid tumors, such as liver tumor, bone tumor, and breast cancer. The mechanism for therapeutic actions of HIFU includes thermal effects and non-thermal effects with the latter dominated by cavitational effects. Read more...Grocery owner dies in Vigan City blaze on New Year (Philippine News Agency)VIGAN CITY, Jan. 1 (PNA) - The owner of a grocery store here burned to death when his two-storey establishment was razed to the ground as the people were welcoming the New Year, according to the local fire station. Read more...How to enhance nonthermal effects of ultrasound (EurekAlert!)High-intensity focused ultrasound is a rapidly developing noninvasive technology for tumor treatment. A research group in China investigated the pathological characteristics of nonthermal damage induced by pulsed high intensity focused ultrasound (PHIFU) combined with ultrasound contrast agent (UCA) in rabbit liver VX2 tumor. The results showed that non-thermal effects of PHIFU combined with UCA ... Read more...Pressure mounts on US regulators over Madoff pyramid scam (AFP via Yahoo! News)US financial regulators came under increased attack Tuesday for failing to stop a 50 billion dollar fraud that Wall Street heavyweight Bernard Madoff is accused of running as more banks and investment funds reported losses. Read more...iD Fashion Show 09 comes alive (Scoop.co.nz)Six graduates from the Otago Polytechnic School of Fashion have been chosen from a field of 23 to showcase their cutting edge collections at the 2009 Southern Trust iD Dunedin Fashion Show to be held at the historic Dunedin Railway Station on Saturday 14 March 2009. Read more...2004 Subaru Impreza WR1 from UK and Ireland - Comments (Carsurvey.org)Think the M3 would be a bit quicker than a WR1. FQ 340 is the way to go. Of course it would. But only slightly, after all the M3 (if you're talking about the new one) has a 414 bhp V8. A slight advantage over the WR1... It's an executive performance saloon. It's a completely different car! Read more... |
This article does not cite any references or sources. (November 2007) Please help improve this article by adding citations to reliable sources. Unverifiable material may be challenged and removed. For other uses, see Frequency (disambiguation). Sinusoidal waves of various frequencies; the bottom waves have higher frequencies than those above. The horizontal axis can represent for instance time or space. Frequency is a measure of the number of occurrences of a repeating event per unit time. It is also referred to as temporal frequency. The period is the duration of one cycle in a repeating event. So the period is the duration of one cycle in a repeating event. So the period is the duration of one cycle in a repeating event. So the period is the duration of one cycle in a repeating event. So the period is the duration of one cycle in a repeating event. So the period is the duration of one cycle in a repeating event. So the period is the duration of one cycle in a repeating event. So the period is the reciprocal of the frequency. Contents 1 Definition and units 2 Measurement 2.1 By counting 2.2 By stroboscope effect, or frequency beats 3 Frequency of waves 4 Examples 5 Period versus frequency 6
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