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✳ This is it ... the scientific topic we always wanted to discuss ...
- Thread starter North_Sky
- Start date
I already read it next week.
- Thread Starter
- #63
We would love to solve the issue in a record time and accessible fashion to all.
Can you help us?
Time travel might be mathematically possible in the sense that Einstein perhaps imagined it: ripples in space time so extreme they fold on each other and where they touch you can hop from one ripple to another. But in a practical sense it's an impossibility in multiple ways. There are no dimensional "coordinates" to "go" to: no element of mass is ever in the same place twice and there are no references. The surface of the Earth is spinning (1,000 miles/hr.); Earth is orbiting the sun; the sun is orbiting the center of our galaxy; our galaxy is moving (1.3 million miles/hr.), and everything is expanding - but differently depending on the vantage point elsewhere in the universe. And who knows if Newtonian momentum is conserved through a time hop? So if I "hop" to "here" in 1 second, "here" has moved, not only over 1,000 feet relative a second ago along a curve (the surface of the Earth), it's moved relative in all the other known and unknown dimensions - and so have all the other molecules. So, just looking at our galaxy moving 1.9 million feet in one second, I might end up 359 miles out in empty space - or inside a tree.
Or maybe Albert was right after all!
Or maybe Albert was right after all!
Mentioning the pandemic IS talking politics, don't you think so?Here @ ASR we don't talk politics. That way we can advance much further in life in our own better direction. And if we start talking politics this thread will evaporate and be no more for eternity. Now, you wouldn't like to see that happening ...
No more than mentioning "the sky is blue".
Mathematics has this odd feature that being able to formulate something mathematically often precedes (or should I say "is required for") the related technology. But that doesn't necessarily mean valid mathematics guarantee workable technology.
- Thread Starter
- #68
Alright, time to hit the next dimension ...
• https://phys.org/news/2020-05-future-totally.html
• https://phys.org/news/2020-05-future-totally.html
There's so much 20/20 hindsight doing the rounds about "what should have been done about the pandemic", that mentioning going back to stop it from happening has decidedly political overtones in my neck of the woods.
- Thread Starter
- #70
Ok, everyone got that so far? We're all on the same page?
Speed of light is our gateway to time travel, period.
I just gave you 15 minutes to be on time; 11 minutes for the video + 4 minutes for the short text reading...plenty of time...couple minutes extra.
Next, a short video ...
weasels
Senior Member
I think the idea that the uni-directional chain of cause and effect is a bypr
That is truly unfortunate, but likely not unique to your neck of the woods.
That is truly unfortunate, but likely not unique to your neck of the woods.
- Thread Starter
- #72
That's not the subject of my thread; that was simply an example as a benefit of time travel, that's all. ...For the good of humanity.
Forget the pandemic, forget the economy, most importantly forget the politics.
* If you mention one more time about political relation or overtone I'm going to ask Thomas to lock that thread forever, for eternity. I'm serious.
Talk science of time travel or go home. Don't screw up in my thread man.
This is science of space travel here, strictly science.
Next ...
Speed of light...
If you drop a rock off the roof, it accellerates downward at an ever increasing rate, 32 feet per second added to the previous 32 feet per second and so on, ignoring air resistance.
If you could accellerate yourself at the same rate with no obstacles blocking your path - it would take nearly a year (ignoring relativistic effects) to reach lightspeed.
If you drop a rock off the roof, it accellerates downward at an ever increasing rate, 32 feet per second added to the previous 32 feet per second and so on, ignoring air resistance.
If you could accellerate yourself at the same rate with no obstacles blocking your path - it would take nearly a year (ignoring relativistic effects) to reach lightspeed.
Not just now, but physics and cosmology are my favorite "go to sleep" TV topics.
Check out Sean Carroll's channel on youTube.
And then you’d need to slow down
Vini darko
Major Contributor
Pah! lights impossibly slow. At the least one needs to travel at relative kilolights to get anywhere.
Roll out the wormholes. Peter Hamilton’s take on them is great fun — going through them using a railway.
Vini darko
Major Contributor
I do enjoy his books. Pandoras star is a personal favorite.
Isn’t that’s the one that opens with the first manned mission to Mars being gatecrashed by two nerds from California using a wormhole?
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