Track spikes Emil Zatopek, a distance runner from Czech Republic, wore them during the 1952 Olympics in Helesinki. The front of the sole features a rigid or semi-rigid spike plate containing between 3 and 9 threaded holes called spike wells. Spikes can be screwed into each well using a spike wrench. Recently, some individuals have attempted to add a "through hole" at the bottom of the spike to make them easier to tighten, remove, and install. Some shoes have permanent or "fixed" spikes which are not meant to be removed. Spikes may break during competition. Track shoes are exceptionally light, some shoes
Emil Radok Emil Radok Emil Radok (22 May 1918 – 7 January 1994) was a Czech film director. He was co-inventor of the multi-media show Laterna Magika, , which was a star attraction at the Czechoslovakia pavilion at Expo 67. In 1968 he left to exile to Canada and died there. Probably Radok's most monumental project was the "kinetic mosaic" which he designed for the Universe of Energy pavilion at Walt Disney World's EPCOT Center theme park, which opened on October 1, 1982. Working with WED Enterprises (Walt Disney Imagineering), Radok created a pre-show film for the pavilion that was projected onto