Richard Clark wrote:
"Poe got it right."

I had no idea Poe had such a scientific interest. Poe no doubt got many
things right but his observations on the universe are so extensive and
written so long ago that it is unlikely that some errors can`t be found.
Poe`s scientific study is impressive and he got right much of what he
wrote. Where did I get the idea he spent much of his life spaced out on
drugs?

In the years since Poe, much has been added to scientific knowledge.

The antenna section of "Transmission Lines, Antennas, and Wave Guides"
by King, Mimno, and Wing, was written by Ronald W.P. King. On page 73 he
gives the dielectric constant of free-space as:

Epsilon o = 8.85 times 10 to the minus 12 farad / m.

King also gives the permeability of free-space as:

Mu o = 4 pi times 10 to the minus 7 henries / m

From these, King calculates the velocity of light (vC).

vC = 1 / sq.rt. Mu o times Epsilon o = 3 times 10 to the 8th power m /
sec.

On page 117, King elaborates, saying: The existence of a characteristic
resistance for electromagnetic effects is just as mysterious (no volts
and amps in the wave itself), but no more so than the existence of the
finite velocity---3 times 10 to the 8th power m / sec.

---Physical science seelks to provide a mathematical mechanism for
predicting observable effects about nature."

Best regards, Richard Harrison, KB5WZI