Do you have a question about it?
If you want us to answer the question, it happens because the particle is decelerating, and the blue light you see is the light emitted from the energy lost in this process.
Is it the truth ? I have just known about this problem ?
To abszero Could you explain more about this process ?
Another link you might find helpful: http://hyperphysics.phy-astr.gsu.edu/hbase/relativ/einvel.html#c3
No I just thought intresting
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