Home Is Where The Wind Blows

Henri Wilson: Please explain how radial vectors come into this  (13-Sep-2002)

>> There are a number of possible scenarios relating to how the force q*E
>> might be velocity dependent.
>> For instance the influence of the moving charge on the local field might be
>> time dependent. The magnitude of such an effect would therefore vary with
>> the velocity of the particle.
>
>
E = q(1 - b^2)r/[4*pi*e0*R^2(1-b^2*sin^2(theta))^1.5]
>
>
where r is the unit radial vector and b = v/c.

please explain how radial vectors come into this.

Henri Wilson.
Theoretical and applied Physicist.

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