Item 106 - Letter from George Airy

Open original Digital object

Identity area

Reference code

Add. MS a/200/106


Letter from George Airy


  • 1 Nov. 1854 (Creation)

Level of description


Extent and medium

3 pp.

Context area

Archival history

Immediate source of acquisition or transfer

Content and structure area

Scope and content

Royal Observatory Greenwich - GA is 'busy in the pendulum reductions, and till they are pretty far advanced or indeed completed we cannot tell how good the results are'. He sent six observers to Haston Colliery: 'I put up the apparatus and gave a few lessons, but I did not take a single observation'. GA gives a description of the tests: 'Galvonic wires were laid from one station to the other, and a telegraph needle was mounted by each clock face, and thus our clocks were compared by simultaneous signals without any necessity for chronometers'. GA is surprised at WW's report of Scoresby's remark on the non-correction of varying inductive force, and he should direct Scoresby [William Scoresby] to look at the Phil. Trans. for 1839 (p. 182-183): 'The effect of induced magnetism is very small, and I believe that ship-correcters very commonly neglect it'.

Appraisal, destruction and scheduling


System of arrangement

Conditions of access and use area

Conditions governing access

Conditions governing reproduction

Language of material

    Script of material

      Language and script notes

      Physical characteristics and technical requirements

      Finding aids

      Allied materials area

      Existence and location of originals

      Existence and location of copies

      Related units of description

      Related descriptions

      Notes area

      Alternative identifier(s)

      Access points

      Subject access points

      Place access points

      Genre access points

      Description identifier

      Institution identifier

      Rules and/or conventions used


      Level of detail

      Dates of creation revision deletion




          Digital object (External URI) rights area

          Digital object (Reference) rights area

          Digital object (Thumbnail) rights area

          Accession area