Can Anyone Answer These Black Hole Problems?

[James R]

Here is one paper which claims "Indications for a preferred reference frame from an ether-drift experiment"

And so...?

Clock just measure local time. 'Simultaneity' can be used to explain 'universal time'.

There is no universal time.

Relative to what?

Saying something is relative means that it changes when you change your frame of reference.

Einstein used 'simultaneity' to explain 'time'. In this explanation he considered 'clock' as an event and not as time.

A clock is different from an event, and time is what a clock measures.

The relativity of simultaneity is a derived consequences of the postulates of relativity.

 

[Lady Elizabeth]

You could also add length & mass to the non-universal list.

 

[RJBeery]

przyk, I'm going to start a new thread to separate the noise

 

[hansda]

And so...?

There is a possibility for 'preferred reference frame' or 'universal/uniform time'.

There is no universal time.

What you think about 'universal time' as explained in wiki?

Saying something is relative means that it changes when you change your frame of reference.

So, simultaneity is relative to local clock.

A clock is different from an event, and time is what a clock measures.

Why clock is different from an event?

What is your definition of a clock?

What is your definition of time?

What is your definition of an event?

The relativity of simultaneity is a derived consequences of the postulates of relativity.

What about 'simultaneity' as is observed in quantum entanglement?

or,

What about "simultaneity of existence" which is self evident?

 

[hansda]

You could also add length & mass to the non-universal list.

Problem with 'time' is that, time is not an object like mass and its dimension/length. Time can not be perceived the way we perceive mass. Time is perceived from change by measuring the 'rate of change'.

 

[arfa brane]

A clock is different from an event, and time is what a clock measures.

An observer 'using' (that is, observing) a clock to assign a local time to any event is also an event. When you look at a clock to see what the time is, that's a local event, since you now have a time coordinate and you and the clock have three local spatial coordinates; coordinates define events.