The most satisfactory method of driving copper electrodes into the earth is by means of an electric hammer which delivers a large number of light blows. The usual procedure is to choose the ...

earth-abundant electrocatalyst, as well as highly efficient mass transport. Here we report the design of a porous hollow fibre copper electrode with a compact three-dimensional geometry ...

She explains that while the microchips the company uses contain rare earth minerals, around 90% of a finished circuit board is copper. Take LEDs, for example: while the rare earth element terbium ...