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Train rails are joined together via a seriously awesome process called exothermic welding, which basically involves lighting off a chemical called Thermite and sending molten iron into a sand mould.

Thermites are a double-edged sword. Packing a tremendous energy density, and eager to produce tremendous heat when ignited, thermite is great for welding train tracks. But sometimes you might be ...

Many inventions can be traced back to the scientific curiosity of Prof. Hans Goldschmidt. His most important invention was patented 120 years ago. The THERMIT® process turned out to be a major advance ...