At relativistic speeds — that is near the speed of light — time moves more slowly, which would mean the electron beam wouldn't have enough time to spread out, keeping the beam focused.

Cameron Diaz at the Berlin premiere of "Back In Action." Getty Images for Netflix Cameron Diaz made a stunning return to the spotlight at the Berlin premiere of “Back in Action” on Wednesday ...

Multiple sclerosis (MS) hip pain and knee soreness are very common problems. Joint issues are usually due to a nerve-related or muscle-related manifestation of MS rather than degeneration of cartilage ...