Papurau Newydd Cymru

Chwiliwch 15 miliwn o erthyglau papurau newydd Cymru

Cuddio Rhestr Erthyglau

11 erthygl ar y dudalen hon

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SCIENCE NOTES AND NEWS.

Tlu^ CAUSE OF SLEEP.

"ELECTRIC STEEL" IN GERMANY.

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Rhannu

"ELECTRIC STEEL" IN GERMANY. The Heroult electric process for thA produe tion of steei 11" now in practical operation at Remscheid Haston in Germany, and it is re- ported +* t the steel produced is much superior in many ways to that made by older methods. Steel of great purity and homogeneous quality is made from ordinary scrap-iren rubbish, melted, and then subjected to the action of an electric oven, in which the necessary carbon, manganese, nickel and other substances requ d to produce steel of various qualities are added to the liquid metal. The oven has a capacity of <rom one and one-half to two tons, and is heated by a current of 100 volts. The new steel is said to be stronger and resistant to wear and tear than the old-fashioned crucible steel.

MEASURING THE INFINITE

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FACTS ABOUT BUILDING STONN.