Recent content by aaryan0077

Is everything "else" black hole? A black hole is something form which it is impossible to escape; even for light, and so no information can reach us form it Except for measuring its gravitational effects it produces, we can't tell that its out there or not. So it means that if form some...

Okay, if its info that can't travel faster than light, this means that any other thing. which is not info, or does not contain any info could indeed go ftl. then, consider the time of creation, at instant of BB (big bang) we had nothing, no particles antiparticles, any any other stuff, just...

Not exactly, but I found it http://en.wikipedia.org/wiki/Special_relativity#Causality_and_prohibition_of_motion_faster_than_light"

Can time dilation have any effect on information? I mean "sending (or transfer) of information"?

In many of the posts it is mentioned that the things (as the contact point of scissors, dots, shadows etc.) and all other things that travel at faster than light are not "physical entities". I'll give you two examples of "physical entities, one being 'imaginary' and other being 'real' that...

What do you consider as "information"

Really I didn't understand much of this what you posted before but this one was really helpful. Thanks!

Thanks for the link!

If we turn our laser from planet 'A' to 'B' the light's displacement will be in tangential plane, but not the motion, which would be rotational and hence the velocity would be changing, ( though we all know that speed will be const. ) hence there'll be acceleration, so this cannot be treated...

No, its not like this, http://img240.imageshack.us/img240/1262/478pxlightconesk1.png Here AB is 'timelike' , so that there is a frame of reference in which A & B occur in same location, but just separated in time, and if n that frame A precedes B, than A precedes B in all frame(s). But...

So what about this? http://img188.imageshack.us/img188/9195/wormholetimetravels1.jpg

What do then you consider as "physical entity"?

Okay, so I don't understand how to start exactly, cause it's grown faster than I expected. I'll try to start with simple thing(s), than I may (try to) complicate 'em.

OH! I have started to get headache reading this, First sorry to all for late reply, I didn't had any access to internet for these days. :frown: I hope you understand. :redface:

I know that relativity doesn't permits a motion at speed of light or fast, as the Lorentz factor becomes infinite and we get absurd results, but what about wormholes or something, say wrap drive and what about http://en.wikipedia.org/wiki/Alcubierre_drive" and tachyons. Also I've heard that...