There is no light used in a CPU (or any other kind of chip found on a PC motherboard). Grace Hopper was talking about the speed of light, which is roughly how f

There is no light used in a CPU (or any other kind of chip found on a PC motherboard). Grace Hopper was talking about the speed of light, which is roughly how fast a change in voltage will propagate. That can and does curve all around your CPU because the wires are not always routed in straight lines.