The chief source of calcium carbide in this country is the electric furnace.
The cheapness of calcium carbide is due to the development of cheap electric power.
So a lump of calcium carbide, with which many readers are familiar, has vast stores of heat locked up within it.
Acetylene, which is so simply made by means of calcium carbide and water, has been a great factor in lighting for navigation.
There are cement factories in the town, and calcium carbide is an important article of export.
In the first place, calcium carbide itself is a very bad conductor of heat.
Yet these two substances are forced into combination in the manufacture of calcium carbide.
This view would be correct if calcium carbide were prepared in a state of chemical purity, for it also is a white body.
A certain amount of the calcium carbide is placed in a gas-tight vessel containing water.
A great deal of heat is developed on adding water to calcium carbide, so that care has to be taken in generating acetylene.