Skip to comments.Recent articles in Scientific American have talked about traveling faster than light.
Posted on 03/20/2005 8:31:45 PM PST by KevinDavis
Einstein's special theory of relativity predicts that nothing can exceed the speed of light. But special relativity applies when spacetime is flat. When spacetime is curved, the theory applies only "locally"--that is, over regions of spacetime small enough to be considered flat. Consider the analogy of a plane that is tangent to a sphere. The flat geometry of the plane is a good approximation to the geometry of the sphere when the size of the plane is very small compared to the sphere's radius of curvature.
(Excerpt) Read more at sciam.com ...
I say we reach light speed first then try to go faster after that. Wake me up when we reach light speed. ZZZZzzzzzzzzzzz.
Never say never. Anything can be done.
No one will ever prove that an angle can be trisected using only an unruled straightedge and a collapsible compass.
No one will ever prove that the square root of 2 is equal to a ratio of two integers.
And these classics are only the tip of the iceberg of things that no one will ever prove.
Sorry, Kevin, but "Anything can be done" is a false statement.
So, you should only go at the speed of light during the day time. Good to know.
What is the Space Time thing?
No, there was an experiment done a couple years ago using the same methodology determining the speed of light - Jupiter and mistimed calculations due to speed of light error.
Jupiter was to pass by a loud radio source, and it was determined when and how the gravity would alter the signal given speed of light values, or instantaneous values.
The speed of the influence of gravitational effects is the speed of light. This means if the sun were to spontaneously vanish from the center of the solar system, it would take 8 minutes for the earth to fly off in a straight line.
It's an issue of dimensions, not speed in space-time.
What is the Space Time thing?
Not sure what your question means.
I don't think so, take into account solar flares cause fuxuations in the Earth magnetic field which might prevent the creation of a 'on planet' stable wormhole for any amount of time.
But I do see the possiblity of this research leading to a gate system that is at one quarter of the speed of light (in a vacuum) like what is shown in the anime Cowboy Bebop and maybe someday a warp drive.
Diamonds reduce light to about 60% of lights speed in a vaccuum. That's why its refraction raating is so high.
Yup, gee, that's really great. Instead of having one solar system to f**k up, you're now gonna give them multiple systems to do their work. Plus, with FTL, there's no way to "vote with your feet" that they can't reach you at. No thanks.
Speaking of diamonds, have you heard about research in light based computers using artifical diamonds as light based CPUs.
I was thinking of sending them into a convenient black hole. Who said anything about installing manual controls on the ships?
What if speed is only relative to where you are actually are and you can continue to accelerate to a unlimited speed. For example, you are actually sitting still in an automobile or airplane, but the automobile or airplane is moving as is the earth.
"What is the Space Time thing?"
A guy on a moving spaceship shoots gun once and again at a later time.
All observers will measure a distance and time between shots where the change in distance squared minus the change in time squared equals a number that is the same for all observers.
That clears that up.WOW what a chowderhead I am.Stupid me!!!
So I says, if one can see, perchance, back through time via the Hubble telescope, the epicenter of the big bang, and if stronger resolution affords me the ability to see the other side of the epicenter of the big bang, do I see time from the beginning to the past?
Is then time travel capable to the future?
Just a barnacle on my hull through life.
You got these twin brothers, see...
One takes off on a space ship, going to point A.. and he then will return..
The round trip, at the speed of light, will take say, 10 years..
Space twin returns to earth in what, to him, was 10 years..
Space twin finds his earth twin has aged say, 50 years, and is now 40 years older than brother space twin..
As you approach the speed of light, time itself is changed.. or how we (travellers) experience time..
The "basic" explanation is that time slows down..
I'm sure that's not accurate, but for the non-physicist layman, it's close enough..
The idea is, when at say, 60 % of light speed, it takes you 200 years to take a sip of your coffee.. to you, it's only 5 seconds.. for anyone observing you from outside of your rapidly moving craft, it's 200 years..
That's where the controversy comes in concerning faster-than-light travel...
Some (sci-fi authors especially) have postulated that travelling FTL would or could result in "time travel", actually reversing time..
Whether time would reverse within the traveller's ship, causing them to get younger is a problem... but, at any rate, travelling to another solar system, or even another galaxy would then be "theoretically" possible..
Simply "time" your round trip FTL travel to bring you back within say, a year of your departure..
All sorts of rules concerning time paradox says this is extremely dangerous, if not impossible..
More than you ever wanted to know about relativity and the space time thing.
When we look at the center we see what happened 10 billion years ago..
In order to see the Big Bang actually happen, you would have to go more than 15 billion light years away from the center of the universe..
You would also have to travel faster-than-light to get there in order to see the BB happening..
Travelling at light-speed, you would always be 5 billion years too late to see the BB happen..
...... Moral Hazard (I'm an atheist gamer. I don't believe in God Mode.)
......Morale Hazard (I'm an relativist gambler. I absolutely do NOT communicate in Moral Mode.)?
Sorry, I'm sure I totally missed your 'point'.....
It be like flying from Atlanta to Birmingham in one of dem fast jets, dat thing is so fast, it get der before it take off.
When you leave, don't forget to turn out the light.
He was multitalented and did more than one thing.
Actually, according to Einstein, gravity travels at exactly the speed of light. If ths sun were to disappear or explode right now, we wouldn't know or feel anything for a full 8 minutes.
I am curious, how can an individual travel through time.
If you did this, you would have no where to stand, until the universe returned to it's position ftom when/where you started your time travel.
Well, there have been many experiments with the earth and sun. It has been proven that the earth tracts to the actual location of the sun, or about 2 degrees ahead of the apparent location that we see as the sun. I remember reading on some website a few years ago that if there were any significant lag in the planetary reaction, that the planets would spiral out of their locations. Think about it! Have some ball orbit a center point and then move the force acting on the ball so that it is pointing a few degrees off the center point. what happens to the path of the ball?
Sounds a bit like the B-Arc to me.
It's not the mass, but the space-time coordinates.
How about saving Terri?
It's travel through space-time, not just time..
Everything is in motion, so any sort of "time" travel would always have to take into account that not only time has changed, but the space-time coordinates of the place ( or point) one wishes to be in that time frame..
"t's travel through space-time, not just time..
Everything is in motion, so any sort of "time" travel would always have to take into account that not only time has changed, but the space-time coordinates of the place ( or point) one wishes to be in that time frame.."
that's the point I am making.
Time travel is impossible, because to travel in time (even one atom only), the whole universe must be moved.
I am familiar with the works of Van Flandern and his finite speed gravity inducing orbital decay. I've not done the calculations myself nor verified the work but his arguments are compelling. Either way, Gravity Probe "B" should provide some conclusive data and it will be very interesting to see the results.
It seems like every week, at least every month, we are that much closer to
Under appreciated flick, imho.