Browse "Science & Technology"

Displaying 556-570 of 781 results

  • Macleans

    Parkinson's Disease a Mystery

    A doctor's diagnosis can land like a punch in the solar plexus: you have Parkinson's disease. Chronic, progressive and incurable. In the life-altering reverberations that follow come the questions.This article was originally published in Maclean's Magazine on April 29, 2002

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  • Article

    Patent

    A patent applies to an invention that is determined to be new, useful and inventive. A patent provides an inventor with the exclusive right to make, use or sell their invention for a certain number of years. When a patent expires, the invention becomes public property. (See also Intellectual Property; Inventors and Innovations.)

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  • Article

    Peavey

    The peavey is a lever for handling logs It was designed in 1858 and named after its inventor Joseph Peavey, who was a Maine blacksmith. The peavey, which is a refinement of the earlier cant hook, greatly facilitated the down

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  • Article

    Pediatrics

    Pediatrics is that branch of MEDICINE concerned with the child, its development, care and diseases.

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  • Macleans

    PEI's Engineering Marvel

    This article was originally published in Maclean’s magazine on June 2, 1997. Partner content is not updated. Islanders had never seen anything quite like it. On July 13, 1995, the world's largest floating crane, known as the Svanen, arrived off the coast of Prince Edward Island for work on the $1-billion bridge that has finally linked the province to mainland Canada.

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  • Article

    Petrochemical Industry

    The petrochemical industry, which produces chemicals using OIL AND NATURAL GAS as major raw materials, occupies an important position in Canada's MANUFACTURING and consuming sectors. Oil and natural gas are composed primarily of hydrocarbons. Most petrochemicals contain hydrogen or carbon or both.

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    Petroleum

    Since its first commercial exploitation in the 1850s, petroleum has become the major energy source of Canada and the industrial world.

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  • Article

    Petroleum Industries

    Petroleum industries find, produce, process, transport, refine and market petroleum commodities. 

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    Petroleum Research and Development

    Research has always been the backbone of the petroleum industry. Bringing crude oil, bitumen or natural gas to the surface presents major technological problems and, once recovered, there is little use for the resource in its raw state. 

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    Pharmaceutical Industry

    The pharmaceutical industry involves companies that research, create, market and sell both generic and brand-name drugs.

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  • Article

    Physical Anthropology

    Human biological history is most directly told by the fossil record. Although early hominid remains (fossils in the human line) are not found in the Western Hemisphere, Canadians have contributed significantly to paleontology.

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  • Article

    Physical Education (Kinesiology)

    Kinesiology, a branch of the educational curricula of every province in Canada which originated with a variety of forms of activity and concepts such as drill, calisthenics, gymnastics, physical training and physical culture.

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  • Article

    Physicians for Global Survival (Canada)

    Physicians for Global Survival (Canada) (originally Physicians for Social Responsibility) is a voluntary nonprofit organization dedicated to the prevention of nuclear war. It came into being largely as the result of the efforts of the founding president, Dr Frank Sommers.

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    Physics

    Physics is the study of matter and radiation, the space-time continuum that contains them, and the forces to which they are subject. Physics may be experimental, observing the behaviour of matter and radiation under various conditions, using increasingly sophisticated instruments; or it may be theoretical, using mathematical tools to construct models, to formulate laws governing observed behaviour and to indicate (on the basis of these models and laws) promising avenues for further experimentation. The terms macroscopic and microscopic (or, more accurately, submicroscopic), and "classical" and "modern," refer to aspects of physics characterized by different scales in the phenomena studied. Macroscopic or classical physics deals with matter in bulk, as solids, liquids or gases.

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  • Article

    Pipelines in Canada

    Pipelines are systems of connected pipes used to transport liquids and gases — namely oil and natural gas — across long distances from source to market. More than 840,000 km of pipelines criss-cross the country. They represent part of the oil and gas sector which directly and indirectly employs approximately 740,000 people. According to Natural Resources Canada, the sector earns the government an average of $20 billion in royalties, fees and taxes each year (see Natural Resources in Canada). It also contributes nearly 11 per cent of Canada’s gross domestic product. Pipelines, however, have been controversial in Canada. Pipelines help transport fossil fuels and research indicates that fossil fuel use, is significantly contributing to climate change. In recent years, Indigenous groups, environmentalists, municipalities and labour unions have opposed numerous pipeline projects due to the risk of contaminated local waterways from spills and leaks. (See also Environmental Movement in Canada).

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