Facts
In Germany during medieval times, a red mineral was found that looked like copper ore (rock). When miners couldn't extract any copper from it, they blamed a mischievous sprite of German mythology, Nickel. They decided to call this ore Kupfernickel, with the German word for copper being Kupfer.
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Quotes
Medieval technology? The middle ages invented, among other things, the crank, the horse collar, eyeglasses, the flying buttress, the stirrup, the windmill, the wheelbarrow, printing, firearms, paper, the canal lock, the compass, the rudder, the mechanical clock, the spinning wheel, and the treadle.
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