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Quebec Bridge
Society: ASCE Main Category: Civil Sub Category: Bridges Era: 1910-1919 DateCreated: 1917 Quebec Bridge Quebec City State: Quebec Zip: G1K 4J9 Country: Canada Website: Creator: McLure, Norman , Cooper, Theodore

The bridge is immense, not only in length and weight but in width. At 67 feet wide, it can accommodate two sets of railway tracks, two sets of streetcar tracks and two roadways.

It took three tries and cost 89 lives, but the city of Quebec was determined to compete with provincial rival Montreal for commercial rail traffic in the late 19th century. The solution was a rail bridge across the St. Lawrence River requiring a single cantilever span 1,800 feet long - the longest ever attempted. 

Image Credit: Courtesy Wikipedia/Sebastien Savard (CC BY-SA 2.5) Image Caption: Quebec Bridge Era_date_from: 1917
Peterborough Hydraulic (Canal) Lift Lock
Society: ASME Main Category: Mechanical Sub Category: Water Transportation Era: 1900-1909 DateCreated: 1904 353 Hunter St East Peterborough State: ON Zip: Country: Canada Website: Creator: Rogers, Richard Birdsall , Dominion Bridge Company

Opened July 9, 1904, this lift lock is the highest of its type in the world, transferring boats between two water levels in a single 19.8 m (65 ft.) lift. Designed in place of conventional locks, which would have lengthed the time considerably to transverse a gradual drop, this lift lock was a unique solution made feasible. It operates on a balance principle. Each boat chamber is supported by a ram, 2.28 m (7.5 ft.) In diameter. These move up and down inside water-filled cylinders connected by a pipe.

Image Credit: Courtesy Flickr/Mac Armstrong (CC BY-SA 2.0) Image Caption: Peterborough Hydraulic Canal Lift Lock Era_date_from: 1904
Neil Bartlett and the Reactive Noble Gases
Society: ACS Main Category: Chemical Sub Category: Frontiers of Knowledge Era: 1960-1969 DateCreated: 1962 Dept of Chemistry Vancouver State: BC Zip: V6T 1Z1 Country: Canada Website: Creator: Bartlett, Neil

In 1962 Neil Bartlett demonstrated the first reaction of a noble gas. The noble gas family of elements - helium, neon, argon, krypton, xenon, and radon - had previously been regarded as inert. By combining xenon with a platinum fluoride, Bartlett created the first noble gas compound. This reaction began the field of noble gas chemistry, which became fundamental to the scientific understanding of the chemical bond. Noble gas compounds have helped create anti-tumor agents and have been used in lasers.

Image Credit: Image courtesy University of British Columbia Library. Image Caption: Neil Bartlett and the Reactive Noble Gases Era_date_from: 1962
Ontario Power Generation
Society: IEEE Main Category: Electrical Sub Category: Power, Energy & Industry Application Era: 1890-1899 DateCreated: 1898 Twelve Mile Creek Niagara State: Ontario Zip: Country: Canada Website:,_1898 Creator: Patterson, John, Cataract Power Company

The Decew Falls Hydro-Electric Development was a pioneering project in the generation and transmission of electrical energy at higher voltages and at greater distances in Canada. On 25 August 1898 this station transmitted power at 22,500 Volts, 66 2/3 Hz, two-phase, a distance of 56 km to Hamilton, Ontario. Using the higher voltage permitted efficient transmission over that distance. The Cataract Power Company of Hamilton Limited (the predecessor to the Dominion Power and Transmission Company) was organized in 1896.

Image Credit: Courtesy Flickr/ontariopowergeneration (CC BY 2.0) Image Caption: Decew Falls Hydro-Electric Plant Era_date_from: 1898
Society: IEEE Main Category: Electrical Sub Category: Communications Era: 1960-1969 DateCreated: 1962 Shirley's Bay Research Centre Ottawa State: Ontario Zip: K2K Country: Canada Website:,_1962 Creator: Defense Telecommunications Establishment Electronics Lab
"Driven by the need to understand the characteristics of radio communication in Canada's North, Canadian researchers focused on the exploration of the earth's upper atmosphere, the ionosphere. Canada's satellite program commenced with the launch of Alouette-I on September 29, 1962. Alouette-II followed in 1965, ISIS-I in 1969, ISIS-II in 1971. The Alouette/ISIS tracking antenna serves as a reminder of Canada's contribution to this international effort in space science.
Image Credit: Public Domain; NASA Image Caption: The The Alouette 1, the very first satellite constructed by Canada Era_date_from: 1962
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