PIC and Vid of black hole eating star

[nervewrecker]

[Duane 3NE 2NR]

Lets see if I remember this correctly..

Imagine standing on a train travelling at the speed of light. If you were to walk forward on that train, technically speaking you would exceed the speed of light, which as we know is impossible.. So in such a scenario, to not break the laws of Physics, time must slow down to compensate..

See, time travel is possible!

You really think you would be able to survive at that speed? Imagine how much force is being exerted on your body at that speed and tell me if you would be able to walk forward

That depends largely on acceleration.. Remember

Force = Mass x Acceleration

Accelerate at a reasonable enough pace and it is theoretically possible to reach 99.999% the speed of light with no ill effects.

To further make this possible, you need to exclude factors like wind resistance etc.. i.e. it must be done in space. Imagine the wind resistance of an object with a large mass moving close to the speed of light! would be epic.

Think of it as being on a plane travelling at 500km/h. Quite comfortable...
Top fuel dragsters can also do 500km/h quite easily, but that as you know is a different story..

that's right

phreakazoid, at the equator the earth rotates at approximately 1,038 miles per hour. Added to that the earth is also speeding at about 66,660 miles per hour in its revolution around the sun.

even at those speeds you still walk forward pretty easily right?

as 3stagevtec mentioned, a passenger plane travels at around 500km/h, yet you can still get up out of your seat and walk forward thereby moving slightly faster than the plane, perhaps at 501km/h

it's all relative.

[mero]

so i read that not even light can escape a black hole yet it spewing light at 95.5% the speed of light out?

[skylinechild]

Of course for that experiment to work, we would need to find a way to travel through space at a speed of at least 2000 light years per hour, if you wanted to get there in an hour.

not gonna happen any time soon

Oh??? I beg to differ.

do you know the star gate address to get there..??...I can give you the 7th symbol....

the first 6....is all up to you

[silent_riot]

so i read that not even light can escape a black hole yet it spewing light at 95.5% the speed of light out?

Light could be from the boundaries of the black hole, outside of its full gravitational field, where light has not yet reached the actual mass of the black hole. The gravitational forces are still having an effect though, by slowing the light down by ~5%.

[skylinechild]

Lets see if I remember this correctly..

Imagine standing on a train travelling at the speed of light. If you were to walk forward on that train, technically speaking you would exceed the speed of light, which as we know is impossible.. So in such a scenario, to not break the laws of Physics, time must slow down to compensate..

See, time travel is possible!

Another cool idea is if someone travels at near the speed of light away from the Earth and back, they would have aged differently relative to those on Earth!

hmmm explain the age difference theory to me....i dont get it.

[~Vēġó~]

take in the first season of "Through the wormhole"...... lots of answers to the questions posed, including that light spewing out of the blackhole, which is supposed to be a gamma stream...

[Corn Bird]

so i read that not even light can escape a black hole yet it spewing light at 95.5% the speed of light out?

Light could be from the boundaries of the black hole, outside of its full gravitational field, where light has not yet reached the actual mass of the black hole. The gravitational forces are still having an effect though, by slowing the light down by ~5%.

I think physicists call this boundary (of a black hole) an 'event horizon'. Inside of the boundary the gravitational pull is strong to capture light; outside the boundary the gravitational pull is not quite strong enough to capture light. It's all in Wikipedia

[Corn Bird]

Lets see if I remember this correctly..

Imagine standing on a train travelling at the speed of light. If you were to walk forward on that train, technically speaking you would exceed the speed of light, which as we know is impossible.. So in such a scenario, to not break the laws of Physics, time must slow down to compensate..

See, time travel is possible!

Another cool idea is if someone travels at near the speed of light away from the Earth and back, they would have aged differently relative to those on Earth!

hmmm explain the age difference theory to me....i dont get it.

I believe silent riot and 3stagevtec are quoting a result/observation which is due to Einstein:

In his famous work on special relativity in 1905, Albert Einstein predicted that when two clocks were brought together and synchronized, and then one was moved away and brought back, the clock which had undergone the traveling would be found to be lagging behind the clock which had stayed put.[A 1] Einstein considered this to be a natural consequence of special relativity, not a paradox as some suggested, and in 1911, he restated and elaborated on this result as printed below, (with physicist Robert Resnick's comments following Einstein's):[A 2][4]

"If we placed a living organism in a box ... one could arrange that the organism, after any arbitrary lengthy flight, could be returned to its original spot in a scarcely altered condition, while corresponding organisms which had remained in their original positions had already long since given way to new generations. For the moving organism, the lengthy time of the journey was a mere instant, provided the motion took place with approximately the speed of light."

If the stationary organism is a man and the traveling one is his twin, then the traveler returns home to find his twin brother much aged compared to himself. The paradox centers around the contention that, in relativity, either twin could regard the other as the traveler, in which case each should find the other younger—a logical contradiction. This contention assumes that the twins' situations are symmetrical and interchangeable, an assumption that is not correct. Furthermore, the accessible experiments have been done and support Einstein's prediction. ..



I think the idea is this -- on a moving object time slows down (called 'time dilation' in Wikipedia) as 3stagevtec says. This has been verified experimentally. And the faster one approaches the speed of light, the slower time becomes for this person. As a consequence, a person traveling within a hypothetical spaceship on a journey of one year (*according* to the spaceship's clock) and at a speed close to the speed of light will as far as he (the traveler) is concerned will experience a normal time lapse of one year. But in fact time is actually slowing down for him -- and so outside the spaceship much more time has elapsed and some *outside* the spaceship a person will age a lot more in this time.

Supposedly, you don't need a need a hypothetical spaceship. These effects can be observed in fast moving objects such as satellites. But these are nowhere near the speed of light...

[Duane 3NE 2NR]

^ the more effective way to travel through vast distances in space is to bend space instead of trying to move quickly over a set distance.

Here if we can bend space we can get to another area that would be usually far away in a small amount of time without having to reach light speed

[Corn Bird]

^ the more effective way to travel through vast distances in space is to bend space instead of trying to move quickly over a set distance.

Here if we can bend space we can get to another area that would be usually far away in a small amount of time without having to reach light speed

More effective in a *very* theoretical sense. Which one do you think is more likely to be achieved within a century

1) building a spaceship that moves close to the speed of light
2) creating a wormhole (which supposedly means that man is going to change (and maintain a change) in the four manifold that is space-time

I am not saying it is impossible (god knows what the physicists are capable of) but in my very layman's opinion I would think it would take a LOT of energy; may need to be able to understand and utilize fusion (not yet possible) before thinking about bending space-time.

Perhaps we're more likely to find (and hopefully exploit) existing wormholes than actually create new ones.

And who knows what may be the possible physics of a wormhole; nature has a way of conserving energy; perhaps the physics of a wormhole may prevent an easy shortcut.

[Duane 3NE 2NR]

^ good point, but if we had both technologies (tried and tested) at our disposal, I think the wormhole would be more effective.

[Seeker]

So you guys are talking about "folding" space like if you take a stick and bend it where the points touches each??

Interesting......it have read Nat/Geo books on this. True it would require tremendous energy to initiate and maintain a wormhole. I even heard about experiments on Dark Matter and if sufficient amounts can be stored, then the potential of this ambition is enormous. After which all we have to do is build a capable engine, Ship (whatever) and fuel cells to properly and safely use this boon.