John loudon mcadam pronunciation
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John Loudon McAdam
Scottish engineer and road-builder (1756–1836)
For other people named John McAdam, see John McAdam (disambiguation).
John Loudon McAdam (23 September 1756[1] – 26 November 1836) was a Scottish civil engineer and road-builder. He invented a new process, "macadamisation", for building roads with a smooth hard surface, using controlled materials of mixed particle size and predetermined structure, that would be more durable and less muddy than soil-based tracks.
Modern road construction still reflects McAdam's influence. Of subsequent improvements, the most significant was the introduction of tar (originally coal tar) to bind the road surface's stones together, "tarmac" (for Tar Macadam.)
Early life
McAdam was born in Ayr, Scotland.[2] He was the youngest of ten children and second son of the Baron of Waterhead. He moved to Lagwine at Carsphairn when still a child to live with his grandparents. The family name was traditionally McGregor, but was changed to McAdam (claiming descent from the Biblical Adam) for politi
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John Macadam
Australian politician (1827–1865)
This article is about an Australian chemist, medical teacher and politician. For other uses, see John McAdam.
John Macadam | |
|---|---|
| Born | 29 May 1827 |
| Died | 2 September 1865(1865-09-02) (aged 38) |
| Nationality | British |
| Occupation(s) | Scientist, Analytical Chemist, Chemistry Lecturer, Health Officer, Member of the Victoria Legislature and Postmaster General |
| Known for | organizing the Burke and Wills expedition namesake of genus Macadamia (macadamia nut) |
The Honorable DrJohn Macadam (29 May 1827 – 2 September 1865), was a Scottish-Australianchemist, medical teacher, Australian politician and cabinet minister, and honorary secretary of the Burke and Wills expedition. The genusMacadamia (macadamia nut) was named after him in 1857. He died at sea, on a voyage from Australia to New Zealand, aged 38.
Early life
John Macadam was born at Northbank, Glasgow, Scotland, on 29 May 1827,[1] the son of William Macadam (1783-1853) and Helen, née Stevenson (1803-1857).[2] His father
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John Loudon McAdam was the son of James McAdam and Susanna Cochrane, the niece of the 7'th Earl of Dundonald. John Loudon was the youngest of 10 children, but the only surviving male from the main line of the Waterhead family. His older brother, James was a Capt. in the military and died in the South Seas when John was about 7 or 8 years old.
John Loudon McAdam was born in Ayr, Scotland in Lady Cathcart's house in the Sandgate, on September 21, 1756. The McAdam of Waterhead's residence at that time was Lord Carthcart's house in Ayr until 1760 when the family built a new residence and moved to Lagwyne. The Lagwyne Castle, now in ruins, is located on the outskirts of Carspairn, Scotland and was part of the property on the Waterhead estate. James McAdam had moved the family residence from Waterhead to Lagwyne because it was more accessible.
Shortly after the family moved into the new residence at Lagwyne it burnt to the ground. James and Susanna were away on business in Edinburgh when the Castle burnt down. A fire from the fireplace is said to have started the fire. John Loudon na
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