If you compare a modern PCB with a typical 1980s PCB, you might notice — like [lcamtuf] did — that newer boards tend to have large areas of copper known as pours instead of empty space ...
Copper prices fell to three-week lows early Wednesday as concerns about demand from energy companies pressured the red metal. The NYMEX Copper continuous future contract hit $4.45 a pound in mid Janua ...