Module 5 : Basic Paradigms
  Lecture 11 : Torus, Coil, Helicoids, Spiral
 

(Ref. http://en.wikipedia.org/wiki/Archimedes%27_screw ; Aug 4, 2012)
(Source : http://www.google.co.in/search?hl=en&q=Archimedes+Screw+in+Harvest&bav=on.2,or.r_g
c.r_pw.r_qf.&biw=1328&bih=574&um=1&ie=UTF8&tbm=isch&source=og&sa=N&tab=wi&ei=ebUcUJf
XEobnrAfV4HwBw#um=1&hl=en&tbm=isch&sa=1&q=Archimedes+Screw+in+Windmill&oq=Archime
des+Screw+in+Windmill&gs_l=img.12...96.11259.40.13374.12.12.0.0.0.0.0.0..0.0...0.0...1c.98EE2bB
CeY0&pbx=1&bav=on.2,or.r_gc.r_pw.r_qf.&fp=340b07ee0ef1dc5f&biw=1328&bih=574
; Aug 4, 2012
15B : http://www.texva.com/holland/The%20Dutch%20Windmill.htm ; Aug. 22, 2012

“The Archimedes' screw, also called the Archimedean screw or screw-pump, is a machine historically used for transferring water from a low-lying body of water into irrigation ditches. The screw pump is commonly attributed to Archimedes on the occasion of his visit to Egypt, but this tradition may reflect only that the apparatus was unknown before Hellenistic times and introduced in his lifetime by unknown Greek engineers.”
(Ref. http://en.wikipedia.org/wiki/Archimedes%27_screw ; Aug 4, 2012)

In modern time the same principle is applied for generating electricity from Hydro Turbine (pale 15B) as Green Energy in many Europe. The Netherlands is successfully using the same technique for long time in ‘windmill’ and in hydro turbine’ (plate 15B&C) projects. It is one of the most successful green-energy techniques that are used in various ways through innovative ideas around the world.

SPIRAL Paradigm

Spirals are closely related to coils, but a spiral usually starts at a center point and winds outward, gradually increasing the radius (plate 16A & B).

  Plate 16A Fibonacci Spiral  
 16B Spiral
 16C Spiral- Climber