The method of making Japanese swords dates back about 3000 years, with a shift from bronze to steel occurring 1200 years ago. The steel-making process in Japan was influenced by the country’s geology, as it lacked sedimentary iron oxides. The Japanese developed a method to extract iron from sand, which provided a high-quality source for steel production.
Related Posts
A Curiosity About… Spools?
There’s some interesting math to be seen in the action of unreeling a spool—just make sure to unspool…
Scientists unveil a quantum generator of truly random numbers
Researchers have developed a new type of random number generator that uses the inherent unpredictability of quantum physics and verifies its results with cutting-edge cryptography.
The First Computers Were Made of… Lightbulbs?
The advent of the age of computers was ushered in by centuries of research into phenomena surrounding electricity.…
We built a human-skin printer from Lego and we want every lab to use our blueprint
Lego bricks have standardised parts and can be found across the world. Cardiff University, Author provided Sion Coulman,…