charateristic impedance of a vacuum
	E Q U A T I O N S
		A times B
		1		elementary charge		8 pi squared		-0.589878
		2		first radiaton cn		32 pi		0.219921
		3		first radiaton sr		32 pi squared		0.219921
		4		light		permeability magn		0.069229
		5		light squared		sphere radius 1		0.138505
		6		proton spec charg		4 pi squared		-0.308362
		7		wave # /photon en		Zeeman / Gauss		0.109096
		8
		9
		10
		A divided by B
		1		conductance quntm		2		0.069229
		2		pi squared		von Klitzing		1.492496
		3		Zeeman / Gauss		ion conversion fc		0.156684
		4		conductance quntm		inv Planck		-0.012065
		5		permeability magn		sphere radius 1		0.069229
		6		rd surface/ rd vl		second radiation		-0.374561
		7
		8
		9
		10
		11
		12
		13
		14
		15
		16
		17
		18
		19
		20
				The impedance that, when connected to the output terminals of a transmission
				line of any length, makes the line appear to be infinitely long, for there are then
				no standing waves on the line, and the ratio of voltage to current is the same for
				each point on the line. Also known as surge impedance.
				highligted		derivative		nist
				copyright   steve waterman   january 2009