Identity area
Reference code
Title
Date(s)
- 28 Feb. 1835 (Creation)
Level of description
Extent and medium
3 pp
Context area
Name of creator
Repository
Archival history
Immediate source of acquisition or transfer
Content and structure area
Scope and content
Salford Street, Manchester - Since WW has expressed a desire to publish his paper on impact [see EH to WW, 7 Sept. 1833] in the next volume of the BAAS, EH would like to render it as worthy of the honour as he can: 'Before I sent the paper to Edinburgh, I saw what must be the law that governs the elasticities in collisions between bodies of different natures - but as I had not then sufficient evidence to prove it wholly; I thought it best to restrict myself to what I could prove; I trust however that it is now brought forward with sufficient evidence. Indeed its agreement being greatest where the modulus of elasticity was most in doubt'. This law has an 'interesting application in theoretical inquiries at the end of your mechanics and where the striking body and the body struck are different in nature and introduces modifications which in your hands would be very interesting'.