The starting block was a kind of equipment used in track and field competitions, mainly for sprinting events. By using the principle of force interaction, it provided the athlete with a starting point. When an athlete stepped on the starting block, the starting block would give them a force, and then the reaction force would be transmitted to the athlete's feet, helping them start. In addition, the modern starting block also had the function of judging whether the athlete had made a false start. Once the athlete made a false start, the result would be judged as invalid. The method of using the starting block was to install the front starting block at a place about one foot to one and a half feet away from the starting point, and the rear starting block was installed at a place about one and a half feet to two feet away from the front starting block. The distance between the two starting blocks was about 10-20cm. The angle of the starting blocks also had certain requirements. The angle of view between the front starting block and the road was 45 to 50 degrees, and the angle of view between the rear starting block and the road was 75 to 80 degrees. According to the height and leg strength of the players, the installation position and spacing of the starting blocks would also be adjusted. In short, the starting block was an important piece of equipment to help athletes start and ensure the fairness of the race.
One of William Shatner's well - known sci - fi novels is 'TekWar'. It's set in a future where a powerful and addictive drug called Tek is a major problem. The story follows a former cop as he battles against the Tek lords. Another is 'The Ashes of Eden' which also has elements of space exploration and human drama in a science - fiction setting.
The three alleys and seven alleys included Yijin Lane, Wenru Lane, Guanglu Lane, Yangqiao Lane, Langguan Lane, Ta Lane, Huang Lane, Anmin Lane, Gong Lane, and Jipi Lane.
The 10-yuan blocks were the big block, the small block, and the themed block. Among them, the Brook large block was suitable for younger children. The price was relatively low, and it was one of the choices for entry-level blocks. Other specific styles and content information were not in the search results provided.
WM Shatner's sci - fi novels are unique because of their blend of action and philosophical themes. In novels such as 'The Ashes of Eden', there are exciting space battles and exploration parts, but also deep thoughts about humanity's place in the universe. His writing style is also quite engaging, with a fast - paced narrative that keeps readers hooked from start to finish.