DR. J. J. HOPFIELD'S description of spiral cracks in glass capillary tubing1 reminds us that similar cracks were observed some ten years ago with thinwalled tubing, during the development of ...

How do you make a robot hand? If you are [Robimek], you start with some plastic spiral tubing, some servo motors, and some fishing line. Oh, and you also need an old glove. The spiral tubing (or pi… ...