| RefNo | MS/603/1/18 |
| Level | Item |
| Title | Letter from H E [Henry Edward] Armstrong, 55 Granville Park, Lewisham, London, to [Joseph] Larmor |
| Creator | Armstrong; Henry Edward (1848-1937); British chemist and educationalist |
| Date | 4 July 1906 |
| Description | Gives a summary of two views on osmotic pressure and notes how Larmor's problem in contrasting osmotic pressure the effect produced by an acid might be removed. He gives an example from Caldwell's experiments. There is much work to be done with solvents other than water, but there is a difficulty in associated molecules of substances not easily broken down into simplexes and there is not a complete dissociation even at extreme dilutions. He hopes that they will have proofs of their papers soon. He has been spending the week with Lord Berkeley who has a delightful laboratory. He know how to work and has a spirit of accuracy, although not well informed. His O.P. apparatus is 'spendidly constructed', but he will not be able to extend its use far, owing to the difficulty in obtaining membranes. His vapour pressure work promises greater value. He is bent on discovering a Van der Waels equation for solutions, perhaps a vain quest, since it must be impossible to evaluate the various factors. Asserts the value of the vapour method, since the O.P. results are subject to corrections on account of the compressibility of solutions. |
| Extent | 6p. |
| Format | Manuscript |
| PhysicalDescription | Ink on paper |
| AccessStatus | Open |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA8105 | Armstrong; Henry Edward (1848 - 1937); chemist and educationalist | 1848 - 1937 |