Posts by Dale Reese 2 publicly visible posts • joined 11 May 2007
The main parameters of the CD (taken from the September 1983 issue of the compact disc specification) are as follows:
Scanning velocity: 1.2–1.4 m/s (constant linear velocity) – equivalent to approximately 500 rpm at the inside of the disc, and approximately 200 rpm at the outside edge. (A disc played from beginning to end slows down during playback.)
The pages analyzed were selected specifically, *not* as a random sample, from several billion web pages that exhibited suspicious behavior.
Yes, 10% of the 4.5 million (450,000) analyzed in detail were bogus, but a more accurate statistic is: >2G/450K, or about 0.02% (or less) of the web pages Google sampled.
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