Richard Harrison wrote:
. . .
Strength of an electromagnetic wave is usually measured and quoted in
terms of its electric field in volts per meter. This is the number of
volts which would be induced in a one-meter length of wire placed in the
field parallel to the electric lines of force. . .

If the wavelength is 1 m, the voltage induced in the center of an
open-circuited 1 m diple by a 1 V/m field is 0.5 volt, not 1 volt.

Roy Lewallen, W7EL