One-way speed of light test. I would be grateful for any views you might have on what is a simple test to measure lights speed one-way on the surface of the Earth. The purpose of this test is to prove that the speed of light is affected by the ether wind and as a consequence Einstein's SR is wrong. This test is unique in that it eliminates clock synchronization errors and I believe it has never been done! Let u be the speed at which the Earth moves through the ether, its orbit speed of 30000m/s. Two clocks A and B are placed on the Earth's surface 10km apart. When the clocks line up in the direction of the Earth's orbit, a laser fires from A to B. Clock A records the start time and B records the stop time. The time difference between the two clocks is td(1) = sync error + 10000/(c-u) seconds Assuming a small synchronization error exists between them. 12 hours later the clocks line up again parallel to the Earth's orbit, but this time in the opposite direction. The laser again fires from A to B and the time difference recorded is td(2), where td(2) = sync error + 10000/(c+u) seconds The two readings are then compared. Now if SR is true the difference between the times should be zero, as the speed of light is unaffected by the ether - if it exists. But I believe that the speed of the Earth through the ether will result in light travelling at different speeds and td(1)-td(2) = 6.7nS This is a simple test and some may consider it irrelevant, as there are many two-way tests that supports SR. But think very carefully, if two-way tests cannot detect the ether then a one-way test must be the answer and to my knowledge no such one-way speed of light test has been done!