From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Page two of a letter from H.D. Symons & Co. Ltd. discussing the properties of varnished silk and aluminium foil samples.
| Identifier | ExFiles\Box 52\3\ Scan053 | |
| Date | 3rd January 1922 | |
| 3.1.22 -2- Contd. and varnished silk. In the first place, it is the soundest and strongest job from every point of view. The dielectric strength will have a factor of safety of somewhere in the neighbourhood of 10 - 12, and the dielectric inductivity is approximately 5.5, the figure you call for. Our Mr. C.B. Angold is bringing these samples of aluminium foil and varnished silk and varnished aluminium with him, and is calling at your works tomorrow, in order to discuss the matter in greater detail. Yours faithfully, H.D. Symons & Co.Ltd., (Sgd) Harold D Symons. | ||