When writing bash scripts you sometimes need to run commands in the background. This is easily accomplished by appending the command line to be run in the background with an ampersand "&". But what do ...

THE three principal crystal structures of the metallic elements, the face-centred cubic (f.c.c), the body-centred cubic (b.c.c.) and the hexagonal close-packed (h.c.p.), follow a cyclic pattern as sub ...