Materials for Snowboard Essay Example | Topics and Well Written Essays - 1000 words

Materials for Snowboard - Essay Example It had a rope attached to the front tip of the snurfer (board) which offered the rider some control, and there were steel tacks poking through the upper deck for putting the rider's feet in place. Snowboarding then gradually started gaining popularity in the 1970's and 80's, when Snowboarding pioneers like Dimitrije Milovich, (East Coast surfer), and Jake Burton Carpenter unveiled new snowboard designs, related materials and machineries. The development has been quite phenomenal since then. By the end of 20th century there are hardly any Ski-resorts around the world without the snowboarding facility. This game has so far gained more popularity in Europe and USA, with rapid stride in other parts of the world as well. Snowboards are generally similar in construction with exception to some tooling modifications. Some designers think that Cap Construction enhances edge hold on hard snow and generally improves board responsiveness while others contend that caps are harder to repair if the sidewall is damaged. Both types have proved their merits though. Snowboards are categorized into groups like race, alpine, all-mountain/all-around/free-riding and half-pipe/free-style depending upon the style of snowboarding. Snowboards are fabricated from advanced composite materials. Composites are combinations of two materials. One of the materials, called the reinforcing phase, is in the form of fibers, sheets, or particles, and is embedded in the other material/s called the matrix phase. The reinforcing material and the matrix material can be metal, ceramic, or polymer. Typically, reinforcing materials are strong with low densities while the matrix is usually a ductile, or tough, material. The eight main materials in a snowboard are: Topsheet with printed graphic Fiber glass or epoxy Wood or foam core Steel inserts Plastic base, (P-tex) Metal edges Resin Sytsem (glue) Rubber Foil Anatomy of Snowboard The length of metal edge on the Snowboard which touches the snow is the effective part that is used to make a turn. So, it does not include the edge of the tip and tail. The effective edge is in contact with the snow when the board is in a carved turn. A longer effective edge makes for a more stable, controlled ride; a shorter effective edge makes for a looser, easier turning board. Contact points are the points at which the board makes contact with the snow without the pressure of the rider being displaced on the board. This is also called the board's "wheel base". Snowboard construction also differs in the type of materials used in several layers. A Snowboard is constructed in the following steps; i. A layer of UHMW (Ultra High Molecular Weight) polyethylene or plastic commonly known as P-Tex (its brand name) is placed at the bottom of the board. This provides the slippery surface that makes the snowboard slide on snow. During the winter months wax is added to this base to keep it running fast. ii. This

Art and Its Political Messages Essay Example | Topics and Well Written Essays - 750 words

Art and Its Political Messages - Essay Example Art and Its Political Messages In his painting about the bad government, crime is way out of control and the people  roam  a collapsing city. On the side, people in the countryside experience drought.  In the work  done by artist Brunelleschi, the Duomo of Florence is now the  mark  of Florence; this is the tallest  structure  and it illustrates availability of  wealth  and the  public  pride of the most  influential  families in town, in the time of revival (Jane 9). Leonardo, in order to  locate  the woman in his  painting  with ease, used the  design  of a pyramid.  In the portrait, the hands that  are folded  shape  the pyramids front corner. The light ensures that the  different  living  surfaces are not only given the significant geometrical spheres, but also given the  underlying  circles. Leonardo used a system that looks easy while creating his figure of the seated female, which entailed the widespread images of the seated Madonna. He perfectly mod ified the technique so as to form a clear visual impression successfully in relation to the distance between the woman seated and the person who observes the chair armrest also becomes an element that creates division between the person viewing and the woman seated. During the Italian revival, new methods developed in the sectors of painting, monuments and architecture. Figures demonstrate feelings in their movement and expressions on their face. The magnificence of the human structure exposes itself, as it happened in the traditional Greeks, naked as the form of art. In naturalism, the artists  put  more attention on exposing the  significance  of nature. In the invention of oil paint, apart from tempera or wet plaster which is easy to  dry, there is the  introduction  of shading regions and the  usage  of silhouette. Using canvas as a  medium  when painting with oil, the artist were able to  mix  color,  create  a vapor, and  perform  their  work  for a longer  duration  and with more effectiveness (Jane 10). Antiquity Italian revival was amongst the significant, useful age, with great figures of  exceptional  masters to be established in  various  centers and every key  field’s work o f art,  sculpture  and structural design. In the revival, there was a close  relation  between art and science. Artists and scientists mutually struggled to  master  the  substantial  environment and the  skill  of work of art profited by the two sectors of  study  that  was termed  as scientific: structure of man, which represented the  body  of  human  in a remarkably accurate manner, and on a mathematical perception (Jane 16). Formerly, painters had accomplished this  cause  by  experimental  ways, but the  invention  of a mathematical  technique  of achieving a three-dimensional  idea  is accredited  to Brunelleschi in almost 1420. Since then, the system could be  thoroughly  premeditated  and explained, and it resulted to the significant mechanisms of artists, more  particularly  painters, in their  search  of reality. The people who were both scientists and artists were Leonardo da Vinci and Piero della Fr ancesca. We are uncertain whether these people would have comprehended  our  dissimilarity  involving science and art. Giotto is amongst the recognized figures in