There's been much discussion.

The end-to-end RF loss resistance of a half-wave copper dipole is given by -

R = Squareroot( Lambda / 2 ) / D ohms.

Where Lambda is the free-space wavelength in meters and D is wire or rod
diameter in millimetres. Much more simple and easier than measuring it.

For example, the overall loss resistance of a 14 awg, 40m dipole, is 2.73
ohms.

For another metal, multiply R by the square root of resistivity and the
square root of permeability, both relative to copper.
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Reg, GFGQ