Re: Why is the speed of light also the max speed for everything else too?

On Aug 6, 12:41 am, The TimeLord <mathnphysics-...@xxxxxxxxxxxxx>
wrote:

Why is mass a constant? *What* is mass?

Mass is constant, because it is defined as the amount of matter. Mass
only changes if the amount of matter changes. It is also a scalar,
which means it can not change unless the amount of matter changes.

Novice here,

I thought matter and energy were discovered to be interchangeable with
matter just being a complex and compact arrangement of energy. Why is
it unreasonable then that as energy is put into matter, a portion of
it might becomes matter/mass?

.

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