There is a discussion here: http://www.school-for-champions.com/science/ac_world_volt_freq.htm
Tesla, working at Westinghouse, in the 1890's designed some of the first electrical generators, and determined that 60Hz was an efficient voltage.
This system was used in other countries, but German engineers dominated Europe, and they decided that 50Hz was a better fit for the Metric system.
Thinking of 50Hz as Metric-friendly is pretty silly, because all of the other time units are not Metric. Hertz is based on seconds, and there's 60 of them in an minute, not 50. It also influenced television frequencies, where it turns out that 50Hz is barely sufficient, and 60Hz reduces eye strain.
The same as charging at 60 hertz if you are in a county that runs at 50 hertz and have a charger that runs at 50 hertz.
Hertz as in your CPU runs a 3 giga hertz etc....
Trans Canada Trail
only 36 runs were scored by Canada against sri lanka in a world cup match
canada vs Sri lanka,,canada made 36 runs in 2003 world cup
The world's longest recreational trail that runs across the country of Canada is called Trans Canada Trail. The trail is 14,000 miles long.
Yes, Europe has the most ski runs in the world.
mickey mantle has the most world series home runs in a career.
Matthew Hayden has scored most runs.That is 659 runs.
Normally that would be however many volts your house runs on. The US/Canada standard is 120 volts at 60 hertz, while most of Europe runs on 240 volts at 50 hertz. Keep in mind though there are all types of light bulbs that run on all voltages from 12 to 240. It should say the voltage on the bulb though? but if you live in North America and you are asking about a normal house-type bulb, your quest will most likely end with 120.
Mickey Mantle has the most career World Series home runs with 18.
Mathew Hayden have made most runs in world cup.He had scored 659 runs in 2007 world cup.