bahman wrote: ↑Thu Jan 31, 2019 10:05 pm
The speed of light is a speed at which all events are observed simultaneously. I am wondering why this speed is finite.
"simultaneously"???????
speed of light - in a vacuum is 186k per second.
no matter - nor energy can move faster than that in a vacuum.
space expansion can (and all matter/energy in that space will move (sitting on the space) faster than 186k/sec) - at Event horizon's and edge of visible (WRT- us) universe (sphere edge of Observable Universe (Universe's event Horizon (WRT- us).
bahman wrote: ↑Thu Jan 31, 2019 10:05 pm
The speed of light is a speed at which all events are observed simultaneously. I am wondering why this speed is finite.
"simultaneously"???????
Yes. Time stops in a reference frame which moves with speed of light so all events are seen simultaneously.
bahman wrote: ↑Thu Jan 31, 2019 10:05 pm
The speed of light is a speed at which all events are observed simultaneously. I am wondering why this speed is finite.
"simultaneously"???????
Yes. Time stops in a reference frame which moves with speed of light so all events are seen simultaneously.
yes and how we learned that that that neutrons have mass - back in the 70's.
For quantum particle with constant speed of light the time is ''frozen'' / stopped
But quantum particle needs time when it takes part in interaction with matter
( photosynthesis, photogenesis . . . . etc)
It can mean that quantum particle can have another speed ( relative ) and
another time ( relative )
The speed of light is probably somewhat related to the speed of Universe (History) growth, with the speed of time. mc^2 thus can be considered analogous to the universal kinetic energy of mass m.