| Description | /1 Letter from E. W. Marchant to Oliver Lodge, written from Laboratories of Applied Electricity, University of Liverpool, dated 16 September 1930. Marchant asks Lodge to explain his method for calculating the force between two current-carrying conductors when placed in media of different permeability.
/2 Copy of letter from Oliver Lodge to E. W. Marchant, dated 18 September 1930. Lodge explains his reasoning with regards to the calculation of force between two current-carrying conductors when placed in media of different permeability. With manuscript annotation [by Lodge?].
/3 Letter from E. W. Marchant to Oliver Lodge, written from Laboratories of Applied Electricity, University of Liverpool, dated 22 September 1930. Marchant explains he and Wilberforce's method for calculating the force of attraction between two magnets or coils placed in a medium.
/4 Letter from E. W. Marchant to Oliver Lodge, written from Laboratories of Applied Electricity, University of Liverpool, dated 25 September 1930. Marchant corrects an omission made in his previous letter (OJL/1/268/3).
/5 Copy of letter from Oliver Lodge to E. W. Marchant, dated 25 September 1930. Lodge agrees with Wilberforce and Marchant; their reasoning is identical to his own. |