SAIFUL NIZAM OTHMAN (cikgusaiful)'s Public Profile in the Diigo Community

http://www.myduit4u.blogspot.com/
http://www.khbf3.blogspot.com/

Member since Aug 18, 2008, follows 12 people, 0 public groups, 548 public bookmarks (551 total).

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Recent Bookmarks and Annotations

Selamat Datang Ke www.svr4u.biz on 2009-08-08
EasyTestMaker on 2009-08-05

2.972 How A Sail Boat Sails Into The Wind on 2009-08-03

Lanteen/Triangle Sails 900 AD

http://web.mit.edu/2.972/www/reports/sail_boat/triangular_sail.jpg (4653 bytes)

Two thousand years ago,
triangular sails appeared. With proper orientation, these sails could convert
wind power from any direction into forward thrust. The sail might be pushed or
pulled by the wind force, and the pull was stronger than the push. Although
there was no physical understanding of the pulling force, it allowed the boat to
sail into the wind. In the 18th century, the pulling force was identified as
LIFT, and it was discovered that it was generated by fluid flow over a curved
surface, an AIRFOIL. There are two (often
hotly contested) theories to explain the phenomenon of lift over the top of an
airfoil: BERNOULLI and EULER.

Pusat Pengiklanan Dan Promosi Hot Nusantara on 2009-07-06
KHBf3 on 2009-06-29
Pelan Pelaburan - Unit Dana Amanah Saham, Unit Trust, Skim Pelaburan KWSP, Public Mutual on 2009-06-16
GoingUp! Account::My Websites on 2009-06-11
Teknik rahsia untuk sesiapa menjana duit atas angin paling cepat, senang dan sekelip mata hari ini! on 2009-06-08
e-Tuition on 2009-06-08
Electronic Licensing Application on 2009-06-08