First off let me preface this by saying I have limited education and if my idea is wrong / already been tried I'd love to know. This is purely an idea (very basic one) no working out has been done.
Recently ive been thinking about how we could measure the 1 way speed of light. I thought about the idea of not measureing the time light takes to travel a certain distance, but the time it takes to travel a distance comparative to another entity moving a similar speed. For instance an ion / proton from the LHC.
Not measureing the time from 1 gate to another instead measureing the time between light and another entity.
I would appreciate comments on whether this is possible impossible or already done.
Tom