Contradiction of length contraction in the theory of relativity Abstract: the relative theory believes that the same moving object has different observation length to observers of different kinetic system but its proper length should be calculated to be identical for everyone. In an ideal experiment, two observers from different kinetic systems were told to calculate the theoretical proper length of the object from the third kinetic system, but the results turned out to be quite different. It proved that the relative theory is not a self-consistent theory. Key word: the relative theory; length contraction 以上来自有道人工翻译，大家觉得如何？我怎么看不如机器？
According to special relativity, the values of the length of the same moving object measured by the observers in different inertial frames are different. However, if the rest length of an object is calculated from the measurement results in different reference frames respectively, the conclusions must be the same. Here an ideal experiment is designed. Observers in different inertial frames calculate the rest length according to their observed movement lengths of the object in the third inertial reference frame, but the results are not consistent, which proves that special relativity is not self-consistent.
Key words: Special relativity; Length contraction.