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Re: [TenTec] NEC, ground, grounds, and radials.

 To: tentec@contesting.com Re: [TenTec] NEC, ground, grounds, and radials. "Dr. Gerald N. Johnson" geraldj@weather.net, Discussion of Ten-Tec Equipment Fri, 07 Jan 2011 23:33:31 -0600 mailto:tentec@contesting.com>
 ``` On 1/7/2011 9:54 PM, James Duffer wrote: > > > Doesn't those in the electronics world refer to that as the "j" operator? > 73, Jim, wd4air And the electric power world. Signifies a 90 degree phase angle away from resistive in impedance or voltage or current in complex arithmetic. Math types use i and call it the "imaginary" operator instead which is what made me think hard that day. 73, Jerry, K0CQ > > > >> At my MS final oral I was asked to develop the fourier transform for a >> sinewave. I knew the answer but the math professor (I should have known >> better than to have had a retired head of the math department professor >> emeritus on my committee!). I struggled with it not remembering the >> exponential expression for a sinewave, he finally gave me that, but >> e^it, not jt and I stood there for minutes (felt like hours) wondering >> how I was going to integrate those currents in the exponents... Finally >> I recognized that i wasn't a variable it was sqrt(-1),said "Ahah" and >> rapidly scratched out the solution. I passed and went back for more >> after trying to wear out a new wardrobe of green (not my choice). >> >> 73, Jerry, K0CQ >> _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec ```
 Current Thread Re: [TenTec] NEC, ground, grounds, and radials., (continued) Re: [TenTec] NEC, ground, grounds, and radials., Steve Hunt Re: [TenTec] NEC, ground, grounds, radials (and keying), Mike Hyder -N4NT- Re: [TenTec] NEC, ground, grounds, radials (and keying), Dr. Gerald N. Johnson Re: [TenTec] NEC, ground, grounds, and radials., Dr. Gerald N. Johnson Re: [TenTec] NEC, ground, grounds, and radials., Steve Hunt Re: [TenTec] NEC, ground, grounds, and radials., Dr. Gerald N. Johnson Re: [TenTec] NEC, ground, grounds, and radials., Steve Hunt Re: [TenTec] NEC, ground, grounds, and radials., Rsoifer Re: [TenTec] NEC, ground, grounds, and radials., Dr. Gerald N. Johnson Re: [TenTec] NEC, ground, grounds, and radials., James Duffer Re: [TenTec] NEC, ground, grounds, and radials., Dr. Gerald N. Johnson <= Re: [TenTec] NEC, ground, grounds, and radials., Steve Hunt Re: [TenTec] NEC, ground, grounds, and radials., Rsoifer Re: [TenTec] NEC, ground, grounds, and radials., Rsoifer Re: [TenTec] NEC, ground, grounds, and radials., Dave Kelley Re: [TenTec] NEC, ground, grounds, and radials., Steve Hunt