Memoir of Thomas Drummond, R.E.,F.R.A.S., Under Secretary to the Lord Lieutenant of Ireland, 1835-1840 |
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Page 50
... measuring base- lines is such a measure , bar , rod , or chain as shall have fewest of those qualities , and be least subject to those conditions in the use , which are the sources of errors of measurement ; and in regard to the second ...
... measuring base- lines is such a measure , bar , rod , or chain as shall have fewest of those qualities , and be least subject to those conditions in the use , which are the sources of errors of measurement ; and in regard to the second ...
Page 51
... measurements , of the Observatories of Greenwich and Paris , and the exact determination of their latitudes and ... measurement of Hounslow base was truly the commence- ment , had its origin in philosophical operations con- ducted in the ...
... measurements , of the Observatories of Greenwich and Paris , and the exact determination of their latitudes and ... measurement of Hounslow base was truly the commence- ment , had its origin in philosophical operations con- ducted in the ...
Page 52
... measures were , all of them , liable to expansion and con- traction from changes of temperature ; while the rods ... measured as with the instruments it could be , every- thing being done to prevent or allow for instrumental errors its ...
... measures were , all of them , liable to expansion and con- traction from changes of temperature ; while the rods ... measured as with the instruments it could be , every- thing being done to prevent or allow for instrumental errors its ...
Page 53
... measured every hundred miles . By 1806 the triangles embraced part of North Wales , and a base had been measured on Rhuddlan Marsh , near St Asaph . While these operations were being carried on , others of a more purely scientific ...
... measured every hundred miles . By 1806 the triangles embraced part of North Wales , and a base had been measured on Rhuddlan Marsh , near St Asaph . While these operations were being carried on , others of a more purely scientific ...
Page 54
... measured the only base - line measured in Scotland . The triangles included the whole country northwards from Cumberland , embrac- ing the Isle of Man and part of the coast of Ireland ... measure- ments were 54 MEMOIR OF THOMAS DRUMMOND .
... measured the only base - line measured in Scotland . The triangles included the whole country northwards from Cumberland , embrac- ing the Isle of Man and part of the coast of Ireland ... measure- ments were 54 MEMOIR OF THOMAS DRUMMOND .
Other editions - View all
Memoir of Thomas Drummond, R. E. , F. R. A. S. , Under Secretary to the Lord ... John Ferguson McLennan No preview available - 2020 |
Memoir of Thomas Drummond, R. E., F. R. A.S., Under Secretary to the Lord ... John F. M'lennan No preview available - 2016 |
Common terms and phrases
Administration apparatus appears appointed Argand Argand burner Argand lamp bars became Bill boroughs Captain Catholics chief Colby Colonel Commissioners common compensation considerable constables constabulary course crime Crown direction districts Drum Drummond light Dublin duties Edinburgh effect engaged England English Excellency experiments favour force Government heliostat honour House improvement inquiry interest Ireland Irish juries jurors justice labour land landlord Larcom letter light lighthouse lines Lord Althorp Lord John Russell Lord Lieutenant Lord Melbourne Lord Morpeth Lord Normanby Lough Foyle magistrates Maziere Brady measure ment mond Morpeth mother object observation occasion officers organisation outrages Parliament party passed persons police political population present principle proceedings question railways reflector regard Report respect result Ribandism Roden Committee says Secretary society Survey tanistry tenants Thomas Drummond tion Tipperary triangulation Trinity House whole Woolwich