I was wondering why my time travel capers hadn't worked right. Thanks BenLurkin.
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Posted on 09/25/2020 9:15:31 PM PDT by BenLurkin
“Classical dynamics says if you know the state of a system at a particular time, this can tell us the entire history of the system,” said Germain Tobar, a student in the School of Mathematics and Physics at the University of Queensland.
“This has a wide range of applications, from allowing us to send rockets to other planets and modeling how fluids flow.”
“For example, if I know the current position and velocity of an object falling under the force of gravity, I can calculate where it will be at any time.”
“However, Einstein’s theory of general relativity predicts the existence of time loops or time travel — where an event can be both in the past and future of itself — theoretically turning the study of dynamics on its head.”
A unified theory that could reconcile both traditional dynamics and Einstein’s theory of relativity is the holy grail of physics.
“But the current science says both theories cannot both be true,” Tobar said.
“As physicists, we want to understand the Universe’s most basic, underlying laws and for years I’ve puzzled on how the science of dynamics can square with Einstein’s predictions.”
“I wondered: Is time travel mathematically possible?”
Tobar and his colleague, Dr. Fabio Costa from the Centre for Engineered Quantum Systems in the School of Mathematics and Physics at the University of Queensland, found a way to ‘square the numbers’ and their calculations could have fascinating consequences for science.
(Excerpt) Read more at sci-news.com ...
Thanks! You made my point in many less words. “Saving time” is important too.
bttt
Good! I have Questions:
1. Does Harley still make an air cooled V-Twin?
2. Are FReep-a-Thons getting shorter or longer?
Yours truly,
BM (stuck in the present)
lol...
“One problem with time travel that I’ve never had explained: the earth is not where it was in space an hour ago, let alone many years ago. And we’re not just talking about where it is relative to the sun in its orbit, because the sun and its solar system is moving though space; as is the galaxy.
So to go back or forward in time, one would have to move through space as well, find where you wanted to be and make sure you don’t materialize inside a tree or a wall.”
Important safety tip. No wonder my time portal is almost always empty space. Crap. That is another six months of math computations.
lol..Good point. I ask a similar question about ghosts that can walk through walls but don’t fall through the floor.
“For example, if I know the current position and velocity of an object falling under the force of gravity, I can calculate where it will be at any time.”
Not true. It takes a ton of more determinations and calculations, for all the possible things, and circumstances that can possibly change the direction of the falling item. You can neither pretend that those things can be ignored nor fail to account for them.
It’s possible, all right. The other day an older version of me walked up, didn’t say a thing, just punched me in the nose. Dunno what I’m gonna do but it must be pretty bad...
What can be explained as happening at the quantum level does not explain what empirical evidence shows is possible at the human material level. While a single quanta of energy/matter may demonstrate a state of being able to exist in more than one place at a time, that only happens, only exists at that level, at that state - the quantum level. As billions of quanta are combined into a collection of what we call “solid matter”, that which the combined quanta make up is an object that, at its collective state, cannot and does not behave, in that state, as a mere quanta alone can do at its state.
Good points. I wonder if the paragraph:
A unified theory that could reconcile both traditional dynamics and Einstein’s theory of relativity is the holy grail of physics.
Is actually a quote from Tobar, or from the author trying to sum up what Tobar was saying and got it wrong.
I could believe that happened. Many years ago, I was quoted in a well-known magazine, but even when the fact-checker verified I said turbopump, it was printed as turboprop.
When there’s no way to prove or disprove a proposition, speculation can become pretty wild.
IMO, time is just the way our brains deal with the fact that every particle in the universe is in constant motion.
Oh it’s there alright just like the future.
Think of time as a continuous flowing stream with no beginning nor end.
Probably the biggest reason it’s possible is that we really don’t matter. Billions of people on this planet. Billions of planets in this galaxy. Billions of galaxies in the universe. If you go back in time and kill your grandfather before he makes your father the universe is just not effected. It’s like 1 grain of sand on a beach being shaped wrong, just don’t matter.
I was wondering why my time travel capers hadn't worked right. Thanks BenLurkin.
I remember reading an article a while back where a physicist was able to set up a non-paradoxical billiard problem involving balls coming back from the future. Not gonna help with the grandpa paradox, but a step in that direction.
Been there... Done that... Several times...
Maybe time/space appears to move in a straight line because we live here and it’s the only reality we’ve experienced. Similar to defining gravity as being the same on the moon and sun as it is here...
“I came to this thread from the year 5780.”
September 18?
Do you have a World Almanac on you by any chance?
Halucinagenic drugs help, too, I bet.
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