The growing awareness of World War I as a grotesque tragedy, where millions of young men were being slaughtered by the unprecedented force of new mechanical weapons, surely influenced Epstein's decision to ruthlessly alter his original idea.

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These are mechanical devices used to provide force in a straight line.

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In terms of reliability impact, more and more work is done in the lab, typically on a dynamometer (a device which measures force), to prove the major mechanical systems on the car.

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That provides mechanical advantage, and thus more force.

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The lower density means dramatically less drag force acting on the spinning disk stack so that mechanical power into the motor is substantially reduced.

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Since they are leveraged institutions (they have a small amount of capital backing lots of assets), with nowadays more or less mechanical risk-management systems that in effect force them to sell when losses mount, this probably also increases volatility.

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In March 2010, pirates hijacked the ship, which had been transporting mechanical equipment and was en route to the United Arab Emirates, the European Union Naval Force Somalia reported at the time.

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