The phase velocity of a wave tells us how fast any given phase of the wave is moving e.g. the crest. If we examine some fixed position, then we can count how frequently a full wavelength passes this position as the wave moves with time. This leads us directly to $v = Î»f$.
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Beverly Hills, California. Beverly Hills is a city in Los Angeles County, California, United States, surrounded by the cities of Los Angeles and West Hollywood. Originally a Spanish ranch where lima beans were grown, Beverly Hills was incorporated in 1914 by a group of investors who had failed to find oil, but found water instead and eventually decided to develop it into a town. By 2013, its population had grown to 34,658. Sometimes referred to as 90210, one of its primary ZIP codes, it was home to many actors and celeb