Philosophy Now Forum

On the sky (for example). Any idea?

"Why we can (possibly) see the future?" By the projecting faculties of the mind in the mind AND not on the sky! Just the suggestion.

Cerveny wrote:On the sky (for example). Any idea?

What do you mean?

Arising_uk wrote:

Cerveny wrote:On the sky (for example). Any idea?

What do you mean?

I wonder which of physical law or expression/equation is responsible for it (for we can see only historical part of "space-time")... Why the light cannot go against the time axis?

I suppose this touches upon several of the deepest questions there is.

One is the question of "now", the notion that a point in time separates past from future. What is "now"? In physics, there is no actual difference between past and future. In a sense, we can see the past, since light that has travelled from distant stars for millions of years reaches us here and now. But we can experience neither past nor future. When we look to the stars, what we see is caused by photons hitting our eyes right "now".

Cerveny wrote:

Arising_uk wrote:

Cerveny wrote:On the sky (for example). Any idea?

What do you mean?

I wonder which of physical law or expression/equation is responsible for it (for we can see only historical part of "space-time")... Why the light cannot go against the time axis?

These may be of interest of you:
http://en.wikipedia.org/wiki/Arrow_of_time
and to delve more deeply into the matter:
http://en.wikipedia.org/wiki/Entropy
http://en.wikipedia.org/wiki/T-symmetry

i blame blame wrote: These may be of interest of you:
http://en.wikipedia.org/wiki/Arrow_of_time

I do not ask you about any arrow, I am asking you about any appropriate physical equation or about the appropriate physical law. I do not know the TR deals witht some arrows :( Please mark the equation where such arrow is dealed with...

Notvacka wrote:I suppose this touches upon several of the deepest questions there is.

One is the question of "now", the notion that a point in time separates past from future. What is "now"? In physics, there is no actual difference between past and future. In a sense, we can see the past, since light that has travelled from distant stars for millions of years reaches us here and now. But we can experience neither past nor future. When we look to the stars, what we see is caused by photons hitting our eyes right "now".

Why we can not see the photons created in the future (in case there is not an actual difference betwen the past and the future)?

Cerveny wrote:Why we can not see the photons created in the future (in case there is not an actual difference betwen the past and the future)?

There is no difference. Every future is also a past, it's just a matter of perspective. There is no movement in the four-dimensional space-time of physical reality. Time does not move, but somehow we appear to move through time. But our four-dimensional physical bodies do not move, only the individually, subjectively experienced point of "now" does. What causes this experience of moving through time is not clearly understood, however.

Cerveny wrote: Why we can not see the photons created in the future (in case there is not an actual difference betwen the past and the future)?

We can only see photons that excite molecules in our retina when they cease to exist. This excitation is transmitted to the brain and processed there (possibly). A photon created in the future can't have interacted with our retina yet.

Cerveny wrote:

i blame blame wrote: These may be of interest of you:
http://en.wikipedia.org/wiki/Arrow_of_time

I do not ask you about any arrow, I am asking you about any appropriate physical equation or about the appropriate physical law. I do not know the TR deals witht some arrows Please mark the equation where such arrow is dealed with...

For an isolated system (the only isolated system we know of is the universe):

where S is entropy and t is time.

http://en.wikipedia.org/wiki/Philosophy ... al_physics
http://en.wikipedia.org/wiki/Entropy_(arrow_of_time)

i blame blame wrote:For an isolated system (the only isolated system we know of is the universe):

where S is entropy and t is time.

http://en.wikipedia.org/wiki/Philosophy ... al_physics
http://en.wikipedia.org/wiki/Entropy_(arrow_of_time)

Do you believe the Universe was more ordered in its begining then it is ordered now? BTW any time arrow is in conflict with TR :(

Just to make sure, when you say "TR" is that an abbreviation for "Theory of Relativity"? If so, I do not think those words mean what you think they mean.

Cerveny wrote: Do you believe the Universe was more ordered in its begining then it is ordered now?

Yes.

Cerveny wrote:BTW any time arrow is in conflict with TR

Would you care to explain why you think this to be so?

converge wrote:Just to make sure, when you say "TR" is that an abbreviation for "Theory of Relativity"? If so, I do not think those words mean what you think they mean.

Hi Converge,

Sounds like you know a little about the Theory of Relativity. If you are interested in helping us out, SGR started a thread a long time ago that just seemed to fizzle out...I think because we all got confused. (Well at least I know I got confused.) Anyway, if you would provide any assistance with your understanding of the subject it would be greatly appreciated!


viewtopic.php?f=15&t=3656

artisticsolution wrote:

converge wrote:Just to make sure, when you say "TR" is that an abbreviation for "Theory of Relativity"? If so, I do not think those words mean what you think they mean.

Hi Converge,

Sounds like you know a little about the Theory of Relativity. If you are interested in helping us out, SGR started a thread a long time ago that just seemed to fizzle out...I think because we all got confused. (Well at least I know I got confused.) Anyway, if you would provide any assistance with your understanding of the subject it would be greatly appreciated!


viewtopic.php?f=15&t=3656

Hehe, sure, I'll check it out. I really like relativity. It took me a long time to wrap my head around it but once it finally "clicked" it was a window into just how strange and fantastic the universe really is.