Tuesday, April 28, 2009

shoes

Before shate shoes were invented skaters shoes looked like they got them out the dumpster. Not only were the shoes not suitable for skating they were also very dangerous because they cant handle the impact. Skateers were brusied and injured badly because they did not have the right equitment. The bruises were a sign of how hard the skater skated.

In the 70's skate boarding exploded in popularity, but quickly it diminished until the late 80's. Skaters then start doing extreme moves .

By 1988 Nike Air Jordans, a basket ball shoe invented the most popular skate shoe. In the late 80's Air Walk challegened Vans. Air Walk created a pair of shoes that had velcro lace protectors with a multi colored skate shoe. The shoe was modeled off of the famous Air Jordans. They were also very bulky. This is why most skate shoes are big and bulky.
History of Rubber
Untill recently many people thought rubber was invented in 19th centuary Europe, but on July 14, 1999 Professor Dorthy Hoseler, Assistant Proffessor Sandra Burkett and an under graduate named Michael Takanian learned that the Myan people invented rubber as long as 1600 BCE.

To make rubber Mayan people used Latex. Latex is the sap of various plants, usually the rubber tree. Whenn exposed to the air the rubber hardens into springy mass. Mayans mixed the rubber sap with the juice from morning glory vines so that it became more durable, elastic, and did'nt get quite as brittle.

Later in 1776 several roles of rubber were sent to France. Next in 1791, an Englishman named Samuel Peal discovered a waterproofing cloth by mixing rubber with turpentine. Joseph Priestly got some rubber and discovered it could be used to erase pencil markings. Charles Goodyear an American also userd rubber to make the tire.

Today about three quarts of the rubber is mad