Lowest Hz moving @ C?

"Lowest Hz moving @ C?"

Essentially zero Hz. The only difficulty is in detection.

"Somewhere between there is a frequency which travels at the speed of light, but if you decrement it one Hz, the lower frequency does not travel at the speed of light."

No, it does not work like that.

http://en.wikipedia.org/wiki/Extremely_low_frequen...

... 3 to 300 Hz.

"That frequency must exist by criteria, unless there is a third category between mechanical waves & e-m waves."

No, it "must" not exist, since you are confusing pressure waves in a material medium, and organized patterns / collections of photons.

"What is the frequency above which all waves move @ C, and who did the preliminary study within that range of frequencies?"

0 Hz. They are called "static electric and magnetic fields", and you'd probably better start with James Clerk Maxwell.

[EDIT: " I am not confusing anything - I am making a point."

You are supposed to ask questions, not "make points".

"My model is both static electricity and magnetism have inherent frequency, which must not zero because the fields shift over time."

OK then one cycle per day (solar wind), one cycle per year (winter/summer), one cycle per 11,000 years (Earth's pole reversal), one cycle per 26,000 years (Earth's polar precession), or one cycle per million years (solar system around the Milky Way). Your assertion that "it must not be zero" is a non sequitur to this argument. Especially when you think sound waves are like slow light waves.

"Your requisite formulae make it so out of rigidly contrived constraint."

It is clearly different stuff, completely different mechanisms, but you keep ignoring this. Please do not get chatty. If you have another question to be answered, append it here, or start another question entirely.

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