Archive for January, 2009

Jan-8th-2009

Watt-minute

A unit of electric energy or work; one watt exerted or expended for one minute. It is equivalent to 14.4408  gram-degrees C. (calories), 44.240   foot pounds, 60       watt seconds or volt-coulombs, 1/60     watt hour.

Jan-8th-2009

Watt-hour

A unit of electric energy or work; one watt exerted or expended for one hour. It is equivalent to : 866.448  gram-degrees C. (calories) 2654.4    foot lbs. 3600      watt-seconds or volt-coulombs. 60      watt-minutes.

Jan-8th-2009

Watt

(a) The practical unit of electric activity, rate of work, or rate of energy. It is the rate of energy or of work represented by a current of one ampere urged by one volt electro-motive force; the volt-ampere. It is the analogue in electricity of the horse power in mechanics; approximately, 746 watts represent one [...]

Jan-8th-2009

Waterproof Lamp Globe

An outer globe for incandescent lamps, to protect them from water.

Jan-8th-2009

Water Equivalent

In a calorimeter of any kind the weight of water which would be raised as much as is the calorimeter with its contents by the addition of any given amount of heat received by the calorimeter.

Jan-8th-2009

Water

A compound whose molecule consists of two atoms of hydrogen and one atom of oxygen; formula, H2 O. Its specific gravity is 1, it being the base of the system of specific gravities of solids and liquids. If pure, it is almost a non-conductor of electricity. If any impurity is present it still presents an [...]

Jan-8th-2009

Ward

Direction in a straight line; a term proposed by Prof. James Thompson. The words “backward” and “forward” indicate its scope.

Jan-8th-2009

Wall Sockets

Sockets for incandescent lamps constructed to be attached to a wall.

Jan-8th-2009

Wall Bracket

A telegraph bracket to be attached to the external walls of buildings to which wires are attached as they come from the poles to reach converters, or for direct introduction into a building.

Jan-8th-2009

W

(a) A symbol or abbreviation for watt. (b) A symbol or abbreviation for work. (c) A symbol or abbreviation for weight.