v is the velocity of the earth in its orbit, R the radius of earth's orbit, and δ the sun's declination.
If A=10×10 kilometres,
|v/V=10-4,||R=1.5 x 1011,||λ=5x10-7,|
|sin φ=0.7,||cos δ=1,||then Δ=O.37.|
To obtain this displacement would require a circuit 40 kilometres in length.