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2007-06-26 07:53:31 · 11 answers · asked by Anonymous in Science & Mathematics Astronomy & Space

11 answers

Spacetime is where events are located, or, depending on your theory of spacetime, it's all possible events. Spacetime is a multi-dimensional space, one of whose dimensions is time. It is often useful to suppose that there are four dimensions of spacetime. These four include the time dimension of before-after and the three ordinary space dimensions of, say, up-down, left-right, and forward-backward.

More technically, spacetime is the intended model of the general theory of relativity. This requires it to be a differentiable space in which physical objects obey the equations of motion of the theory. Minkowski space (that is, Minkowski spacetime) is the model of special relativity. It's a certain 4-dimensional real vector space. General relativity theory requires that spacetime be locally like Minkowski spacetime.

Have past objects, such as dinosaurs, slipped out of existence? Philosophers are divided into three camps on this question, and more generally, on the question of the reality of the past and future. The presentist viewpoint maintains that the past and the future are not real, and that only the present is real, so if a statement about the past is true, this is because some present facts make it true. Advocates of a growing past argue that, in addition to the present, the past is also real. Reality "grows" with the coming into being of determinate reality from an indeterminate or potential reality. "The world grows by accretion of facts,"

Physical time is public time, the time that clocks are designed to measure. Psychological time is private time. It is perhaps best understood as awareness of physical time. Psychological time passes swiftly for us while we are enjoying reading a book, but it slows dramatically if we are waiting anxiously for the water to boil on the stove. The slowness is probably due to focusing our attention on shorter intervals of physical time. Some philosophers claim that psychological time is completely transcended in the mental state called "nirvana." Meanwhile, the clock by the stove is measuring physical time and is not affected by anybody's awareness. When a physicist defines speed to be the rate of change of position with respect to time, the term "time" refers to physical time. Physical time is more basic for helping us understand our shared experiences in the world, and so it is more useful than psychological time for doing science. But psychological time is vitally important for understanding many human thought processes. We even have an awareness of the passage of physical time during our sleep, and we awake knowing we've slept for one night, not for one month. But if we've been under a general anesthetic and wake up, we have no sense of how long we've been unconscious. Psychological time stopped.

2007-06-26 08:28:31 · answer #1 · answered by Mr. Potatohead 2 · 0 1

1 hour till quitting time...so 3:00!

2007-06-26 15:00:55 · answer #2 · answered by cls352 3 · 0 0

12:27 in los angeles, california

2007-06-26 15:27:25 · answer #3 · answered by ? 4 · 0 0

2:05pm. Only 17 more hours till summer vaca!!!!!

2007-06-26 15:03:35 · answer #4 · answered by Sherry 3 · 0 0

2:00 p.m What time is it where you are? I'm in IL.

2007-06-26 15:02:34 · answer #5 · answered by Bethany B 1 · 0 0

15:30 in Cincinnati.

That means it's either too early to tell or too late to do anything about it.

2007-06-26 15:34:08 · answer #6 · answered by Anonymous · 0 0

in pakistan.. 12:03 am

2007-06-26 15:03:47 · answer #7 · answered by Nidz 3 · 0 0

It is all times, troll.

2007-06-26 15:03:37 · answer #8 · answered by Uncle Al 5 · 0 0

Its 5 o' clock somewhere. YAY!

2007-06-26 15:01:54 · answer #9 · answered by Lady Geologist 7 · 0 1

Right now!

2007-06-26 15:10:59 · answer #10 · answered by biblicalfive 2 · 0 0

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