From: titang78@gmail.com   
      
   Relativistic length contraction is theoretically predicted but not directly   
   tested, which lead to incorrect interpretation of the theory illustrated by   
   Bell's spaceship paradox and Ehrenfest paradox. But these paradoxes can help   
   us designing experiments to test length contraction.   
      
   Ideal direct experimental proof should contain the following steps:   
   1.	Measure the tested object's length at rest, the value l0.   
   2.	Put this object in motion.   
   3.	Measure the object's speed, the value v.   
   4.	Measure the object's length in motion, the value l.   
   5.	Check if these 3 values verify length contraction law.   
      
   For doing this experiment, the difference of length l0 ï=80- l should be   
   in measurable range. If the object is a chunk of matter, l0 ï=80- l is   
   not measurable. For example, matter objects with the highest speed we   
   can make are satellites, whose speed is generally 7.8 km/s. If a   
   satellite is made of a string of 100 km long, the value of l0 ï=80- l   
   would be 0.03 mm, which is absolutely not measurable from the ground.   
   This is why contraction of length has never been measured.   
      
   Below I propose two experiments inspired from Bell's spaceship paradox   
   and Ehrenfest paradox.   
      
   Please read the article at   
   PDF: How to test length contraction by experiment? https://pengk   
   anonphysics.blogspot.com/2019/06/how-to-test-length-contraction-by.html   
   or   
   Word: https://www.academia.edu/39584663/How_to_test_length_contr   
   ction_by_experiment   
      
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