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Build a man a fire, and he'll be warm for a day. Set a man on fire, and he'll be warm for the rest of his life.
Tapas Chand wrote:
One thing I always thought, there has to be something which travels faster than light.
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Did a rm -R / to find out that I lost my entire Linux installation!
Jelle Klap wrote:How do wormholes work? I'd have to do some research first.
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Ryan McGuire wrote:Wormholes don't work like a transporter, moving objects or energy at faster-than-light (FTL) speeds.
Guillermo Ishi wrote:By the same token, if you swing your arms when you walk, your arms travel faster than the rest of your body and so your arms are continually advanced in time relative to the rest of your body.
There are only two hard things in computer science: cache invalidation, naming things, and off-by-one errors
fred rosenberger wrote:
Guillermo Ishi wrote:By the same token, if you swing your arms when you walk, your arms travel faster than the rest of your body and so your arms are continually advanced in time relative to the rest of your body.
ummm...are you sure? as my arm swings forward, it is moving faster than my body relative to a point on the earth. However, my arm then has to swing backwards, thus my body is now moving faster relative to that point, so wouldn't it catch up?
and if you are saying my arm moves faster relative to a point on my body, then my body is also moving faster relative to a point on my arm. I think all these cancel each other out, no?
Jelle Klap wrote:How do wormholes work? I'd have to do some research first.
Let me get back to you after watching all 10 seasons of Stargate SG-1.
Oh, and 5 seasons of Stargate Atlantis, because I do want to be thorough.
Henry Wong wrote: Without the wormhole, there is no short path between the portals. This is even true for communications, which is restricted to the speed of light. So, if the other portal is light years away, it should take years before the other portal knows that the first portal want to establish a connection...
"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." -- Ted Nelson
J. Kevin Robbins wrote:
Thanks. You just ruined Stargate for me. Stay away from Firefly.
Henry Wong wrote:
My main issue is not the wormhole itself. My main issue is how the wormhole is established. The first stargate portal dials the other portal (like a phone call), and the two portals work together to establish the wormhole... but how is that even possible? Without the wormhole, there is no short path between the portals. This is even true for communications, which is restricted to the speed of light. So, if the other portal is light years away, it should take years before the other portal knows that the first portal want to establish a connection...
Henry
Build a man a fire, and he'll be warm for a day. Set a man on fire, and he'll be warm for the rest of his life.
Jelle Klap wrote:
Subspace communication. All Stargates are permanently hooked up to a subspace network, so intercommunication doesn't depend on an active wormhole. This is how the DHDs reveive periodic updates to account for stellar drift, among other things. This communication network has also been (ab)used serveral times on the show to lock-out stargates or dial them all at once.
"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." -- Ted Nelson
J. Kevin Robbins wrote:
Jelle Klap wrote:
Subspace communication. All Stargates are permanently hooked up to a subspace network, so intercommunication doesn't depend on an active wormhole. This is how the DHDs reveive periodic updates to account for stellar drift, among other things. This communication network has also been (ab)used serveral times on the show to lock-out stargates or dial them all at once.
Thank you! And all is right with the world again!
Wandering a bit off-topic, but I've wondered if quantum entanglement could be used for ftl communication. Could a pair of entangled particles act as a sort of telegraph system?
Build a man a fire, and he'll be warm for a day. Set a man on fire, and he'll be warm for the rest of his life.
The secret of how to be miserable is to constantly expect things are going to happen the way that they are "supposed" to happen.
You can have faith, which carries the understanding that you may be disappointed. Then there's being a willfully-blind idiot, which virtually guarantees it.
fred rosenberger wrote:
Guillermo Ishi wrote:By the same token, if you swing your arms when you walk, your arms travel faster than the rest of your body and so your arms are continually advanced in time relative to the rest of your body.
ummm...are you sure? as my arm swings forward, it is moving faster than my body relative to a point on the earth. However, my arm then has to swing backwards, thus my body is now moving faster relative to that point, so wouldn't it catch up?
and if you are saying my arm moves faster relative to a point on my body, then my body is also moving faster relative to a point on my arm. I think all these cancel each other out, no?
XKCD was there before you.Ryan McGuire wrote: . . . What would happen if one of a pair of siamese twins ran in a circle while the second one just rotated in-place?
Campbell Ritchie wrote:XKCD was there before you.
The secret of how to be miserable is to constantly expect things are going to happen the way that they are "supposed" to happen.
You can have faith, which carries the understanding that you may be disappointed. Then there's being a willfully-blind idiot, which virtually guarantees it.
Campbell Ritchie wrote:
XKCD was there before you.Ryan McGuire wrote: . . . What would happen if one of a pair of siamese twins ran in a circle while the second one just rotated in-place?
You would end up with the fastest twin separation on record and neither would care who had aged more.Ryan McGuire wrote: . . . What would happen if one of a pair of siamese twins ran in a circle while the second one just rotated in-place?
Ryan McGuire wrote:As you walk, your abdomen experiences zero acceleration, for the sake of discussion. Your swinging hands, on the other hand, undergo acceleration alternating between forward and back (+x and -x). So yes... your hands are younger than the rest of your body.
There are only two hard things in computer science: cache invalidation, naming things, and off-by-one errors
fred rosenberger wrote:
Ryan McGuire wrote:As you walk, your abdomen experiences zero acceleration, for the sake of discussion. Your swinging hands, on the other hand, undergo acceleration alternating between forward and back (+x and -x). So yes... your hands are younger than the rest of your body.
I am by NO means an expert. I just read stuff, so I may be completely wrong here...but isn't the point of relativity that you can choose any point as your reference? So if I choose a point on my hand, then my body DOES accelerate both forward and back.
Where am I going wrong here?
Ryan McGuire wrote:[
What to google: twins paradox, minkowski diagram, relativity of simultaneity, Lorentz transformations
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