Christopher Polhem
Christopher Polhem , 1661-1751, Swedish inventor and industrialist. After studying engineering techniques used in Germany, the Netherlands, France, and England, Polhem set up a mechanical laboratory that gave considerable impetus to Swedish technology. He constructed water-powered machines such as rollers and shearing machines employed in the fabrication of metal products. In gratitude for his services the Swedish government ennobled him in 1716.
Cite this article
Pick a style below, and copy the text for your bibliography.
|
Heat with peat!
Magazine article from: Countryside & Small Stock Journal; 11/1/2000; ; 700+ words
; ...nationally over the decimation of Ireland's peat bogs which are homes to endangered species. This may be a reaction to the huge machines employed in the southern lowland peat bogs, which extrude on a very large scale for the commercial markets. Peat from these bogs...
Read more
|
|
Comment on William C. Brainard and Herbert E. Scarf's "How to Compute Equilibrium Prices in 1891".
Magazine article from: The American Journal of Economics and Sociology; 1/1/2005; ; 700+ words
; ...ca. 1850, Leon Bollee's Multiplier, ca. 1889, perhaps Otto Steiger's Millionaire, ca. 1890, and various special-purpose machines employed by big business and the census office). Yet, that was the age of levers and pulleys, and machines based on mechanical principles...
Read more
|
|
Eli Whitney
Encyclopedia entry from: Encyclopedia of World Biography
...the skilled but expensive master craftsmen required previously. This idea was not a new one. The Swedish inventor Christopher Polhem had used such a system in the 1720s, but no one had carried on his work. By 1799 the government armory at Springfield...
Read more
|
