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A Philips Sonicare 5100. This model has 2 cleaning modes . The brush head vibrates at hundreds of times per second, with the latest models at 31,000 strokes per minute (517 Hz) or 62,000 movements per minute [1] (1033 Hz).
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An electric toothbrush can help you get that dentist chair-level clean, but good brushes are costly. Well, it’s almost too good to be true: The 9500 series Philips Sonicare DiamondClean ...
The Sargan test is based on the assumption that model parameters are identified via a priori restrictions on the coefficients, and tests the validity of over-identifying restrictions. The test statistic can be computed from residuals from instrumental variables regression by constructing a quadratic form based on the cross-product of the ...
In statistics, the Phillips–Perron test (named after Peter C. B. Phillips and Pierre Perron) is a unit root test. [1] That is, it is used in time series analysis to test the null hypothesis that a time series is integrated of order 1.
In Denmark, where the Philips circle pattern was invented, it was used by its national broadcaster Danmarks Radio (DR) from its launch of regular colour broadcasts in 1970, [132] immediately replacing Test Card F and Philips PM5552, [133] and later on the monochrome Pye Test Card G and Philips PM5540; as well as its first nationwide commercial ...
The content and layout of the pattern, as well as the generator, was designed and made by Danish engineer Finn Hendil (1939–2011) at the Philips TV & Test Equipment laboratory in Amager, south of Copenhagen in 1965–66. [4] It has been used in Australia, Spain, United Arab Emirates, [5] Denmark, [6] Israel, [7] Qatar, and the Netherlands.
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