Problem of formula Hall constant

[thanhmssl10]

Hi, this is my first thread in PF, please help me

My document prove the formula of Hall constant very simply and it's k=1/n.e
But my document also say that it's Approximate, and formula more accurate is k= (2/3).(1/n.e)

I want to know how to prove this formula
I am very curious though i may not need it for exam.

 

[Greg Bernhardt]

Thanks for the post! Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?