30 Mart 2010 Salı

Famous Tennis Players











  • Serena Jameka
  • Venus Williams

  • Ana İvanoviç

  • Anna Kournikova

  • Maria Sharapova
  • Roger Federer

Materials

The earliest racquets used in tennis were made of wood which caused a number of inconsistency problems such as the wood warping and the use of different woods in racquets making a different feel when striking the ball.Early designs used metals in their new design many companies experimented with metal such as alimunum,magnesium and titanium.Then many companies experimented with materials such as boron,ceramics,graphite and composites.Each material had its own desirable qualities but ceramics and graphite were the best picks for being very stiff as well as being very good with vibration reduction.

tennis court dimensions


Tennis is played on a rectangular flat surface,usually of grass,clat,concrete or a synthetic suspended court.The cort is 78 feet long,39 feet on a side.Its width is 27 feet from the net.Additional clear space around the court needed in order for players to reach overrun balls for a total of 60 feet wide and 120 feet long.A net is stretched across the full width of the court,parallel with the baselines,dividing it into two equal ends.The net is 3 feet 6 inches high at the posts,and 3 feet high in the center.