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RE: Can we talk about something faster than light? Definitely not Usain Bolt.
According theory, the mass of an object gets heavier as its speed increases while its length reduces.
This is actually a mis-conception. Mass is an intrinsic property of an object. What you actually have in mind here is the'relativistic mass' that is nothing but the energy divided by c2.
By the way, tachyons are often the sign that the considered theory is not in its ground state. Like the mass term of the Higgs field of the Standard Model. It is tachyonic unless we observe that at the minimum of the potential, the degrees of freedom are different.
Nice post by the way :)
I have actually been waiting for your comment :)
This is very correct. It never did occur to me.
I'll also need to read about the Higgs field of the standard model. I am not a physicist but someone who just has a small interest in theoretical physics and I'm glad to have learned a lot from this comment.
Thanks for stopping by.
My pleasure! :)