## The speed of light

How does science work? And what's all this about quantum mechanics?

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bahman
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### The speed of light

The speed of light is a speed at which all events are observed simultaneously. I am wondering why this speed is finite.

Eodnhoj7
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### Re: The speed of light

gaffo
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### Re: The speed of light

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
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### Re: The speed of light

gaffo wrote:
Fri Feb 01, 2019 5:17 am
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
Posts: 2024
Joined: Fri Aug 05, 2016 3:52 pm

### Re: The speed of light

Basically the speed at which everything is seen simultaneously should be infinite.

gaffo
Posts: 1904
Joined: Mon Nov 27, 2017 3:15 am

### Re: The speed of light

bahman wrote:
Fri Feb 01, 2019 3:27 pm
gaffo wrote:
Fri Feb 01, 2019 5:17 am
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.

gaffo
Posts: 1904
Joined: Mon Nov 27, 2017 3:15 am

### Re: The speed of light

bahman wrote:
Sat Feb 02, 2019 9:30 pm
Basically the speed at which everything is seen simultaneously should be infinite.

I've no clue........

bahman
Posts: 2024
Joined: Fri Aug 05, 2016 3:52 pm

### Re: The speed of light

gaffo wrote:
Sun Feb 03, 2019 12:17 am
bahman wrote:
Fri Feb 01, 2019 3:27 pm
gaffo wrote:
Fri Feb 01, 2019 5:17 am

"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.

Neutron? What you are talking about?

bahman
Posts: 2024
Joined: Fri Aug 05, 2016 3:52 pm

### Re: The speed of light

gaffo wrote:
Sun Feb 03, 2019 12:18 am
bahman wrote:
Sat Feb 02, 2019 9:30 pm
Basically the speed at which everything is seen simultaneously should be infinite.

I've no clue........
Because that is the speed that is constant in all frame of references.

RickLewis
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Location: London
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### Re: The speed of light

bahman wrote:
Sun Feb 03, 2019 3:50 pm

Neutron? What you are talking about?
Possibly it's a typo and gaffo meant to say neutrinos?

gaffo
Posts: 1904
Joined: Mon Nov 27, 2017 3:15 am

### Re: The speed of light

bahman wrote:
Sun Feb 03, 2019 3:50 pm
gaffo wrote:
Sun Feb 03, 2019 12:17 am
bahman wrote:
Fri Feb 01, 2019 3:27 pm

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.

Neutron? What you are talking about?
nutrenos - misstype last week.

Eodnhoj7
Posts: 3475
Joined: Mon Mar 13, 2017 3:18 am

### Re: The speed of light

bahman wrote:
Sun Feb 03, 2019 4:24 pm
gaffo wrote:
Sun Feb 03, 2019 12:18 am
bahman wrote:
Sat Feb 02, 2019 9:30 pm
Basically the speed at which everything is seen simultaneously should be infinite.

I've no clue........
Because that is the speed that is constant in all frame of references.
Yeah, light forms the reference frame with the reference frame being determined by other frames as a frame in and of itself.

Light must be both simultaneous and have relatively different speeds.

socrat44
Posts: 55
Joined: Tue Jan 15, 2019 4:20 pm

### Re: The speed of light

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 )

Cerveny
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Location: Czech Republic
Contact:

### Re: The speed of light

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.

gaffo
Posts: 1904
Joined: Mon Nov 27, 2017 3:15 am

### Re: The speed of light

Cerveny wrote:
Fri Feb 22, 2019 7:44 pm
The speed of light is probably somewhat related to the speed of Universe (History) growth,
no, no relation, the "speed" of the universe is due to the expansion of space, 97 precent of the universe is "Speeding" out faster than light.

Cerveny wrote:
Fri Feb 22, 2019 7:44 pm
with the speed of time. mc^2 thus can be considered analogous to the universal kinetic energy of mass m.
light is without mass, only mass provides kinetic energy.

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