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Technical Education

From its origins in manual training "shop" and industrial arts, technical education has consisted of practical and applied subject matter that reflects the practices of current society.

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Stress

Stress was originally viewed as an overpowering external force acting upon individuals or objects. The mechanical engineer still uses the word in this sense, but human biologists have been less consistent in their terminology.

Macleans

Nasa's Columbia Shuttle Disaster

This article was originally published in Maclean’s magazine on February 10, 2003. Partner content is not updated.

FOR LONG MINUTES, the crowd of family, friends, dignitaries and spectators stood at the end of the airstrip in Cape Canaveral, Fla., waiting and hoping for a familiar white speck in the distant blue sky. By the time the countdown clock reached zero, it was clear the reunion would never come.

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Multimedia Communications

Multimedia is the combined use of several media, such as video, graphics, sound, lighting and text for the purpose of education or entertainment. More specifically, it refers to the use of digitized media displayed on a computer.

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Talc

Talc is a mineral composed of 31.7% magnesium oxide (MgO), 63.5% silicon dioxide (SiO2) and 4.8% water. It is formed by the alteration of dolomite or ultramafic IGNEOUS rocks. A formula for pure talc would look like this: 3 dolomite + 4 quartz + 1 water = 1 talc + 3 calcite + 3 CO2.

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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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Telegraph

In 1868 the Montreal Telegraph Co began facing direct competition from the newly established Dominion Telegraph Co and price wars broke out.

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Synchrotron

A synchrotron is a source of brilliant light that acts like a giant microscope to allow matter to be seen at the atomic level. Synchrotron light is millions of times brighter than sunlight and millions of times more intense than conventional X-rays.

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Remote Sensing

History The oldest remote sensing instrument is the photographic camera, which has a long history of use in making observations of Earth from aircraft and, more recently, spacecraft.

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Bridges

More remarkable was the use of an ice bridge across the St Lawrence River in the winters of 1880-81 and 1881-82, from Hochelaga to Longueuil [Montréal], to carry a standard-gauge railway; from January to March in each of those winters a small train, weighing 60 tons, safely used this unique bridge.

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Medical Ethics

Medical ethics are concerned with moral questions raised by the practice of medicine and, more generally, by health care.

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Ocean Ranger

On 15 February 1982, the world's largest semisubmersible drill rig, Ocean Ranger, capsized and sank in a fierce storm on the Grand Banks with the loss of all 84 crew members, 56 of whom were Newfoundlanders.

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Cod Liver Oil

Cod Liver Oil was in the past a primary source of vitamin A, essential for bone growth, health of skin and mucous membranes, and night vision. Today, many other preparations containing vitamin A are available. Before the 1920s, most cod liver oil came from Norwegian COD.

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Dioxine

The term dioxin applies to any of 75 chlorinated derivatives of dibenzo-p-dioxin. The various types of dioxin are quite different from one another, the greatest difference being in their toxicity.