In telecommunication, effective Earth radius is the radius of a hypothetical Earth for which the distance to the radio horizon, assuming rectilinear propagation, is the same as that for the actual Earth with an assumed uniform vertical gradient of atmospheric refractive index.
Note: For the standard atmosphere, the effective Earth radius is 4/3 that of the actual Earth radius.
... was Thornton Wilder) who began acting on Broadway in 1936.
He was typecast as the wasp-tongued, supercillious sophisticate. His most famous role is that of the ...