Browse "Science & Technology"

Displaying 721-740 of 821 results
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Tantalum

Tantalum (Ta) is a grey, heavy, very hard metal with a high melting point (2996°C). When pure, it is ductile and can be easily fabricated. Tantalum has good rectifying properties (ie, converts alternating to direct current) and dielectric properties (ie, does not conduct direct current).

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TC Energy (formerly TransCanada)

TC Energy Corporation (formerly TransCanada Corporation) is a natural gas, oil and power-generation company headquartered in Calgary, Alberta. TC Energy owns more than 92,600 km of natural gas pipeline in North America and transports more than 25 per cent of the gas consumed on the continent. It also operates power plants and gas storage facilities. A public company, it trades on the Toronto Stock Exchange and the New York Stock Exchange under the symbol TRP. In 2018, TC Energy registered $13.7 billion in revenue and $3.5 billion in profit and held $98.9 billion in assets. The company employs about 7,300 people, more than half of them in Canada.

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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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Telecommunications

Telecommunications is defined as the electronic communication of information over distance. In theory, this definition covers all forms of electronic communication and does not distinguish between different kinds of information: voice, data, text and video.

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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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Telephones

The invention of the TELEGRAPH (1837) by Samuel Morse and the telephone (1876) by Alexander Graham BELL were milestones in the quest to communicate over great distances with reliability, accuracy and speed.

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Television

Overlaying these two perspectives is the reality that Canadians have long been among the world's most avid television viewers with tastes that do not necessarily discriminate between domestic and foreign content, or between entertainment and education.

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Telidon

Telidon, a combination of the Greek words meaning "to know at a distance," was a waypoint en route to the Internet and was an early demonstration of how technology can provide on-demand access to information.

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The Discovery of Insulin

For many years scientists believed that some kind of internal secretion of the pancreas was the key to preventing diabetes and controlling normal metabolism. No one could find it, until in the summer of 1921 a team at the University of Toronto began trying a new experimental approach suggested by Dr. Frederick Banting.

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The Internet and Music

The Internet began in the early 1970s as a "network of networks" involving several different US university and government computer systems. It quickly expanded to incorporate computer networks in other countries, including Canada.

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The Lost Villages

The Lost Villages are nine Canadian communities that were destroyed through the unprecedented land expropriation and construction of the St. Lawrence Seaway and Power Project in the 1950s.