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… ...

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 ...

Anyone who finds yellow plastic tubing which could possibly be shock tubing, is encouraged to contact, Todd Randall, at (978) 318-8518 or send an email to todd.a.randall@usace.army.mil.

To the examples cited by Dr. J. J. Hopfield and Messrs. B. N. Clack and N. L. Harris on this subject, I should like to add a further rather unusual example. This was in X8 soda-glass tubing of 6 ...