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

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.

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 [...]

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

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

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.

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