Description | Asks if a proof of a paper reached Prof. [Owen Willians] Richardson safety. The paper in question is 'The soft X-Ray levels of iron, cobalt, nickel and copper', which was sent 3rd September but never returned. Also mentions the proof of a paper by [Russell] S. Barnett, 'The increase of thermionic currents from tungsten in strong electric fields', which was sent 21 September and returned today. |