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).
Instruction sheet detailing the performance comparison of different types of electrical condensers based on their material composition.
| Identifier | ExFiles\Box 52\3\ Scan185 | |
| Date | 29th June 1929 | |
| RR 298 (100 BKS.) (BH57.29-6-29.) MP 224350 ROLLS-ROYCE LTD. INSTRUCTIONS. To Order No. PC 74 (4) Customer's No. in the first cycle, while N: 1335 behaved just like a standard varnished paper condenser. No effect due to the introduction of resin, in the case of condenser 1609 can be observed. Here is perhaps a very slight difference between the curves of the three condensers made up with pure paraffin wax, due to the difference in the melting points; this being in favour of the wax with the highest melting point, condenser N: 1576. Signed C A P | ||