| RefNo | HSF/3/23/24 |
| Level | Item |
| Title | Letter from J A [Joseph Alfred] Hardcastle, The Dial House, Crowthorne, Berkshire, to 'Dear Uncle Willie' [Sir William James Herschel] |
| Creator | Hardcastle; Joseph Alfred (1868-1917); British astronomer |
| Date | 5 June 1910 |
| Description | He thanks his uncle for sending over the letter by hand and it is clear that they will not want the Jacob [Herschel] letters at all. Dr Dreyer lives in Armagh, but will come over some day if he thinks it worthwhile. The idea that the Royal Astronomical Society might recover William Herschel's letters is a good one and he will put it to the committee. Hardcastle saw Forbes's letter in The Times and was also sceptical about the cloud fringes. It seems likely that they missed the tail. It it had been straight at the moment the comet [Halley's Comet] transited the Sun 'we should have been in it'. That implies 'an infinite repulsive force' or one a thousand times gravity. Eddington has found reasons for repulsive force greater than that. At sixty four times gravity Franz calculated the tail would be curved. |
| Extent | 1p. |
| Format | Typescript |
| PhysicalDescription | Ink on paper |
| AccessStatus | Open |