Rotating the screws in different directions allows the robot to move forwards, backwards, left and right—as well as to rotate clockwise or ... can then plan its own path independently.

turn anti-clockwise 90° and keep repeating with the squares getting bigger and bigger until no more squares will fit on the paper. Image caption, STEP 4 - DRAW THE SPIRAL: Starting with the first ...

Inspired by a spiral ladder and a double-headed ... ladder is enough for you to know if you are taking a clockwise or counterclockwise path. In the case of photonic nanostructures, you just ...