Chronology Current Month Current Thread Current Date
[Year List] [Month List (current year)] [Date Index] [Thread Index] [Thread Prev] [Thread Next] [Date Prev] [Date Next]

[Phys-L] Re: Why 60 hertz?

According to the Absolute Astronomy Reference

"It is generally accepted that Nicola Tesla chose 60 Hz as the lowest
frequency that
would not cause street lighting to flicker visibly. The origin of the 50
hertz frequency
used in other parts of the world is open to debate but seems to be a
rounding off
of 60 Hz to the 1 2 4 5 10 structure popular with metric standards."

Herb Gottlieb

On Fri, 25 Mar 2005 09:48:53 -0700 Larry Smith <larry.smith@SNOW.EDU>
A student asked the historical question about why America chose wall
AC to be 60 hertz and why Europe chose 50 hertz. I'm interested

Thanks in advance, Larry
Phys-L mailing list