Science & Technology | The Canadian Encyclopedia

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  • Article

    Lac-Mégantic Rail Disaster

    In the early morning of 6 July 2013, a runaway train hauling 72 tankers filled with crude oil derailed as it approached the centre of the town of Lac-Mégantic, Quebec. The tanker cars exploded and the oil caught fire, killing 47 people and destroying many buildings and other infrastructure in the town centre. The fourth deadliest railway disaster in Canadian history, the derailment led to changes in rail transport safety rules as well as legal action against the company and employees involved in the incident. Years after the derailment, re-building was still ongoing and many of the town’s residents continued to suffer from post-traumatic stress.

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  • Article

    Laser

    Laser (light amplification by stimulated emission of radiation), device used to generate high-intensity light.

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  • Article

    Lead

    Lead is extracted from mined ores containing zinc, silver and minor amounts of copper. It is also recovered from recycled materials; more than 50% of world metal production comes from recycling, making lead one of the most recycled metals in the world.

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  • Article

    Lemming

    Lemming, stocky northern rodent related to voles. About 16 species occur worldwide; best known of the 7 Canadian species are brown and collared lemmings.

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  • Article

    Les Éboulements Bus Crash

    Canada’s deadliest road accident to date was a single-vehicle bus crash near Saint-Joseph-de-la-Rive, in the Quebec municipality of Les Éboulements, on Thanksgiving Day, 13 October 1997.

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  • Article

    Les Forges Saint-Maurice

    The most technically advanced ironworks in America in their first 100 years, the forges had long been obsolete when shut down in 1883. The plant employed over 100 specialized craftsmen and 300-400 labourers, and produced forged iron and molded products such as pots, pans and stoves.

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  • Article

    Library and Information Science

    Library and Information Science, which encompasses all aspects of information management and library operations, is an organized graduate course of studies taught at the university level and producing practitioners with a recognized professional qualification.

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  • Macleans

    Life on Mars?

    It was an evening in summer upon the placid and temperate planet Mars. Up and down green wine canals, boats as delicate as bronze flowers drifted ....This article was originally published in Maclean's Magazine on August 19, 1996

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  • Article

    Lighting

    From earliest times it has been recognized that artificial light prolongs daytime activities. Relaxation and social interaction necessarily occurred after the day's work was done; therefore, indoor lighting has always had a special association with this aspect of living.

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  • Article

    Lightning

    As a thunderstorm grows, or a mature storm approaches, this electric field is reversed. In general, the lower part of a cloud is negatively charged; the upper portions, positively charged. A further positive charge is induced on the Earth's surface below a thunderstorm.

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  • Article

    Line 3 Pipeline Replacement Program

    The Line 3 Replacement Program (also known as L3RP) is an upgrade to the Enbridge Mainline pipeline. The existing crude oil pipeline runs from Hardisty, Alberta to Superior, Wisconsin. The 1,660 km long upgrade is the largest project in the history of Calgary-based Enbridge. The Alberta to Manitoba section of the L3RP has been in service since December 2019.

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  • Article

    Linguistic Anthropology

    In Canada linguistics exists as a fully autonomous discipline, represented by about 12 independent programs, as well as by linguistic research within departments of English, various other language areas, education, philosophy, psychology, sociology and anthropology.

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    https://www.thecanadianencyclopedia.ca/images/tce_placeholder.jpg?v=e9dca980c9bdb3aa11e832e7ea94f5d9 Linguistic Anthropology

  • Article

    Linguistics

    Linguistics is the study of language. Language accompanies almost all human activities, and is the medium for many of them.

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  • Article

    Liver Disease

    Liver Disease, see CANADIAN LIVER FOUNDATION.

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  • Article

    Lizard Species in Canada

    Lizards are reptiles that belong to several suborders within the order Squamata (which also includes snakes). They are the most diverse group of living reptiles and are found on all continents except Antarctica. There are six species of lizard currently found in Canada. In addition, one species, the pygmy short-horned lizard, is extirpated. This means that, while it continues to live in other parts of its range, it is no longer found in Canada. Five of the six lizard species in Canada are native, while the sixth, the common wall lizard, is introduced from Europe.

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