"Helical" Quotes from Famous Books
 ... off in a shower through the flame and falls once more on the lower side. This again causes it to travel in a similar path, and every rotation of the cylinder produces a like effect, so that by the time it arrives at the lower and hotter end it has pursued a roughly helical path, during which it has been constantly lifted and shot through the flame, occupying about half an ...
— Scientific American Supplement, No. 620, November 19,1887 • Various
... defense: (a) Arrangement in depth. The most dependable defense is in prearranged counter attacks. The system of defense must react like a helical spring. (b) Tenacity of defense. 1. Each unit must be prepared to hold its post to the last extremity. 2. Orders to withdraw will never be obeyed unless unmistakably valid. 3. All ground lost must be retaken at once in counter attack ...
— Military Instructors Manual • James P. Cole and Oliver Schoonmaker |
