Activate Flash plug-in or JavaScript and reload to view: Surfing: Geometry of tube
riding 2, Online Learning.
Surfing is the term is used for a surface water sport in which the person surfing moves along the face of a breaking ocean wave (the "surf"). However, surfing is not restricted to saltwater, but can sometimes take place on rivers, using a standing wave.
Big Wave Surfing is a discipline within surfing in which experienced surfers paddle into or are towed onto waves which are at least 20 feet high, on surf boards known as "guns" or "rhino chasers".
Tube riding is described as riding inside of
the hollow cylindrical portion of a breaking wave.
There are many ways to tube ride. The most natural and primitive way is by body surfing. Body surfers ride the waves on their stomachs and can easily access the tube. Tube riding can also be accomplished on a boogie board, surfboard, and any other wave riding mechanism one can come up with. Many surfers spend years and even lifetimes surfing without ever really getting “tubed” (the term used for getting inside the barrel of the wave).
This difficult and sometimes dangerous procedure is arguably the most
coveted and sought after goal in surfing.
Geometry of tube shape The geometry of tube shape can be represented as a ratio between length and width. A perfectly cylindrical vortex has a ratio of 1:1, while the classic almond-shaped tube is nearer 3:1. When width exceeds length, the tube is described as "square".
Source
Wikipedia: Surfing.
Peru offers a large variety of waves, that are perfect for beginners surfing on longboards, intermediate, and advanced surfers. It is noteworthy to mention that the northern coast of Peru boasts the largest left hand point break in the world, located in Máncora; and it also figures the longest left-handed wave in the world, this one in Chicama. Chicama is over 4 km long and when finishing a ride paddling back is not an option - just get out and walk right back up the beach.
Lima, the capital of Peru, is also very attractive to surfers because of
the variety of its waves.
Swells are generated far south and most of the spots get consistent offshore winds. The large number of surf spots make it easy to find uncrowded waves.
Surfing is very popular in Peru; so much so, that the 2004 female world champion, Sofia Mulanovich, is Peruvian. Luis Miguel "Magoo"
De La Rosa, a living legend of surfing in Peru, won the ISA World
Masters Surfing Championship in 2007.
A golden rectangle is a rectangle whose side lengths are in the golden ratio, one-to-phi, that is, approximately 1:1.618. A distinctive feature of this shape is that when a square section is removed, the remainder is another golden rectangle, that is, with the same proportions as the first. Square removal can be repeated infinitely, which leads to an approximation of the golden or Fibonacci spiral.
|
