Browse "Science & Technology"

Displaying 661-680 of 799 results
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Shaking Tent

Shaking Tent rite was widespread among the Ojibwa, Innu (Montagnais-Naskapi), Cree, Penobscot and Abenaki and involved the shamanistic use of a special cylindrical lodge or tent.

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Shanty

A shanty is a winter lumber camp. The term is derived from the French Canadian word for lumber camp, "chantier."

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Silver Dart

J.A.D. MCCURDY was the principal designer and pilot; Glenn H. Curtiss developed the water-cooled engine, an advance on the association's earlier experiments.

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Silviculture

Silviculture is the branch of FORESTRY that deals with establishing, caring for and reproducing stands of trees for a variety of forest uses including wildlife habitat, timber production and outdoor recreation.

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Smoking

Smoking is a universal health hazard. All forms of TOBACCO smoking are risky. Canadian consumption of cigarettes has been declining since the monitoring of smoking began in 1965, when an estimated 50% of adults smoked. In 1981 smoking prevalence had dropped below 40%.

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SNC-Lavalin

SNC-Lavalin is a global engineering and construction firm based in Montreal, Quebec. It works in several industries including oil and gas, mining, cybersecurity and nuclear power. It also builds public and private infrastructure around the world.

The company began in 1911 as an engineering consultant for power projects. In 1991, the original company, called SNC, merged with competitor Lavalin to become SNC-Lavalin. Today it employs some 50,000 people in more than 50 countries. In 2018, it registered $10.1 billion in revenue.

In Canada, the company has received contracts to build major transit projects in cities including Toronto, Montreal and Vancouver. Worldwide, SNC-Lavalin oversees resource-extraction and infrastructure projects in North America, the Asia-Pacific region, Europe and the Middle East.

Since 2011, allegations of fraud and corruption on the part of SNC-Lavalin and several of its executives have plagued the company with scandal.

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Snowmobile

Most innovations in transportation have been adapted to recreation, eg, the bicycle, boat and car, and widespread use of the snowmobile was a logical development in Canada. Over snow-covered ground it provides transportation previously impossible except on skis, snowshoes or dogsled.

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Snowshoes

Snowshoes for winter travel were almost universal among Aboriginal people in Canada outside the Pacific and Arctic coasts.

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Soaring

Soaring, or gliding, is the sport of flying a sailplane or glider for a sustained period of time by utilizing currents of rising air to stay aloft.

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Sod Houses

Sod houses, or “soddies,” were a common style of dwelling built in the Prairies during the second half of the 19th century. Soddies were small structures cheaply built out of blocks of sod and rudimentary house fittings. Sod refers to grass and the soil beneath it that is held together by the grass’s roots. Although the term “sod house” is primarily associated with Canadian and American structures built during westward expansion, the structures found their architectural roots in Indigenous and Norse practices. Sod houses have come to symbolize the hardship of homestead life, despite shacks and log cabins being the primary form of housing.

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Soil Classification

Classification involves arranging individual units with similar characteristics into groups. Soils do not occur as discrete entities; thus the unit of measurement for soil is not obvious.

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Soil Science

Soil science is the science that deals with soils as a natural resource. Studies focus on soil formation, classification and mapping, and the physical, chemical and biological properties and fertility of soils as such and in relation to their management for crop production.

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Solar Energy

The energy contained in sunlight is the source of life on Earth. Humans can harness it to generate power for our activities without producing harmful pollutants. There are many methods of converting solar energy into more readily usable forms of energy such as heat or electricity. The technologies we use to convert solar energy have a relatively small impact on the environment. However, they each have disadvantages that have kept them from being widely adopted.

In Canada, the use of solar energy to generate electricity and heat is growing quickly and is helping reduce pollution related to energy production. Despite Canada’s cold climate and high latitudes (which get less direct sunlight than mid-latitudes), solar power technologies are used in many places, from household rooftops to large power plants. The Canada Energy Regulator (formerly the National Energy Board) expects solar power to make up 3 per cent of Canada’s total electricity generation capacity by 2040.

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Sonar

Sonar (sound navigation and ranging), method for locating objects by the reflection of sound waves. It is used naturally by such animals as BATS and DOLPHINS to locate food and obstacles.