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The use of the converter did not really ramp up until about 1867. In 1868, the best performing mill had two 5-ton converters that produced 500 tons per month combined. By 1876 various improvements and …

In the 1980s most people did not have computers, except the college-educated upper middle class, and even then it was mostly knowledge workers, young people and gadget buffs who had them. Nobody had t …

Dimond did not use any computer, he was a researcher/theorist. His paper simply describes a technique that could be applicable for dedicated circuits typical of the time. He was not anticipating the u …

Although the Romans and Greeks used glass to make vessels, the use of glass for window panes did not start until the middle ages. Bede states that the first use of glass in England was in 684. Until a …

The wikipedia article on ARPANET explains the earliest architecture. Communication was over leased telephone lines using acoustic modems. Each node was run by a small, specialized computer that did ro …

The key development was not actually in printing technology, it was in photography. Being able to print in color is useless unless you can generate color images in the first place. …

The ancient Greeks wrote the same way as the Egyptians: on papyrus scrolls. The oldest European manuscript I know of is the Derveni papyrus which is a Greek scroll dated to 362 B.C.. The writing was …

Steam engines, due to the heat and pressure of steam, require strong metal fittings which was technology not available anywhere in the far east until the 19th century. …

I would go farther than you in saying that ALL, not "most", new world indigenous cultures were based on non-metallic technology. … This is a far simpler, easier and more lucrative technology than metalworking, yet the Indians failed to discover it. …

How long it would take for a Viking raider group to get to their favourite destinations using a Viking warship? To go from Scandinavia to Ireland including various stops and diversions might be …

The first unequivocal and provable use of gunpowder in any significant way during a battle which involved an actual gun (cannon throwing shot) was at the Battle of Crecy (1346). Even in this case, the …

The American Indians failed to discover and exploit the technology of charcoal reduction of iron oxide. …

To quote from Field and Stream (1909): All sportsmen are familiar with the bolt action military rifle and the lever-action sporting rifle. Each has advantages over the other according to how a …

The Romans were good surveyors. Vitruvius described surveying tools and methods in a book that was still used in the Middle Ages, hundreds of years after it was written. By laying out stakes at fixed …

It is a bronze lasanum, a very expensive piece of equipment. The way it works is you put charcoal and some oil/wood in it and light it which makes a hot fire (as you can see flames are coming out of i …