Lewis Dunbar Brodie Gordon (1815–1876) was a Scottish

Scottish people

The Scottish people , or Scots, are a nation and ethnic group native to Scotland. Historically they emerged from an amalgamation of the Picts and Gaels, incorporating neighbouring Britons to the south as well as invading Germanic peoples such as the Anglo-Saxons and the Norse.In modern use,...

 civil engineer

Civil engineer

A civil engineer is a person who practices civil engineering; the application of planning, designing, constructing, maintaining, and operating infrastructures while protecting the public and environmental health, as well as improving existing infrastructures that have been neglected.Originally, a...

.

A student and assistant to Isambard Kingdom Brunel

Isambard Kingdom Brunel

Isambard Kingdom Brunel, FRS , was a British civil engineer who built bridges and dockyards including the construction of the first major British railway, the Great Western Railway; a series of steamships, including the first propeller-driven transatlantic steamship; and numerous important bridges...

, during the construction of the Thames Tunnel

Thames Tunnel

The Thames Tunnel is an underwater tunnel, built beneath the River Thames in London, United Kingdom, connecting Rotherhithe and Wapping. It measures 35 feet wide by 20 feet high and is 1,300 feet long, running at a depth of 75 feet below the river's surface...

, he made a career change to mining

Mining

Mining is the extraction of valuable minerals or other geological materials from the earth, from an ore body, vein or seam. The term also includes the removal of soil. Materials recovered by mining include base metals, precious metals, iron, uranium, coal, diamonds, limestone, oil shale, rock...

. Registering as a student at the Freiburg School of Mines, Germany

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

, he then studied further at the École Polytechnique

École Polytechnique

The École Polytechnique is a state-run institution of higher education and research in Palaiseau, Essonne, France, near Paris. Polytechnique is renowned for its four year undergraduate/graduate Master's program...

 in Paris

Paris

Paris is the capital and largest city in France, situated on the river Seine, in northern France, at the heart of the Île-de-France region...

.

In 1838 he visited the mines at Clausthal, and met Wilhelm Albert

Wilhelm Albert

Wilhelm August Julius Albert was a German mining administrator, best remembered as the first person to record observations of metal fatigue....

. Impressed by what he saw, he wrote to his friend Robert Stirling Newall

Robert Stirling Newall

Robert Stirling Newall FRS was a Scottish engineer and astronomer.Born in Dundee, he was befriended by civil engineer L.D.B. Gordon. In 1838, whilst studying at the Freiburg School of Mines, Germany, Gordon visited the mines at Clausthal, and met Wilhelm Albert...

, urging him to "Invent a machine for making (wire ropes)". On receipt of Gordon's letter, Newall designed a wire rope machine. On Gordon's return to the UK in 1839, he formed a partnership with Newall and Charles Liddell

Charles Liddell

Charles Liddell , was an English railway engineer.Born in Easington, County Durham, he was the son of the Rector. A student and educated by George Stephenson, he resultantly became involved in a number of Styephenson's projects, including the Grand Junction Railway and London and Birmingham...

, registering R.S. Newall and Company in Dundee

Dundee

Dundee is the fourth-largest city in Scotland and the 39th most populous settlement in the United Kingdom. It lies within the eastern central Lowlands on the north bank of the Firth of Tay, which feeds into the North Sea...

. On 17 August 1840, Newall took out a patent for "certain improvements in wire rope and the machinery for making such rope," and R.S. Newall and Company commenced making wire ropes for "Mining, Railway, Ships' Rigging, and other purposes".

Gordon became a mentor to the brothers James Thomson

James Thomson (engineer)

right|300px|James Thomson was an engineer and physicist whose reputation is substantial though it is overshadowed by that of his younger brother William Thomson .-Biography:Born in Belfast, he grew up mostly in Glasgow...

 and William Thomson

William Thomson, 1st Baron Kelvin

William Thomson, 1st Baron Kelvin OM, GCVO, PC, PRS, PRSE, was a mathematical physicist and engineer. At the University of Glasgow he did important work in the mathematical analysis of electricity and formulation of the first and second laws of thermodynamics, and did much to unify the emerging...

, encouraging their interest in the development of a general theory of heat

Theory of heat

In the history of science, the theory of heat or mechanical theory of heat was a theory, introduced predominantly in 1824 by the French physicist Sadi Carnot, that heat and mechanical work are equivalent. It is related to the mechanical equivalent of heat...

. In 1848 he gave the brothers a copy of French physicist Sadi Carnot

Sadi Carnot

Sadi Carnot may refer to:*Nicolas Léonard Sadi Carnot , French physicist*Marie François Sadi Carnot , president of the third French Republic, and nephew of Nicolas Léonard Sadi Carnot...

’s 1824 treatise On the Motive Power of Fire, with which he used to write his first thermodynamics

Thermodynamics

Thermodynamics is a physical science that studies the effects on material bodies, and on radiation in regions of space, of transfer of heat and of work done on or by the bodies or radiation...

 article the 1848 “On an Absolute Thermometric Scale Founded on Carnot’s Theory of the Motive Power of Heat”, which founded the absolute temperature scale.