Time Travel

For chatting about non-political topics.

Hot topic: The perils of exercise, Lapidary, food, gardening, brewing & Gallipoli/Anzac Day.

Special feature: WWIi Operation Manna/Chowhound.

Open to guest posting.

Moderator: johnsmith

Forum rules
The rules for this board are in the Charter of Moderation. Off Topic is for fairly serious discussion of things other than politics and current affair.

Time Travel

Postby Miranda » 14 Mar 2019, 13:47

You know how most nights, when you can’t sleep, your brain has a way of making you relive every embarrassing, sad, or regretted decision in your life? Well, that little habit may actually pay off soon if one researcher has his way. And his way, involves going back in time to change the events themselves.

Ben Tippett, a professor at the University of British Columbia, has been doing the math on the feasibility of time travel, and he believes it’s theoretically possible.

"People think of time travel as something fictional," Tippett said in a news release. "And we tend to think it’s not possible because we don’t actually do it. But, mathematically, it is possible."

Tippett says he created a new formula based on Albert Einstein's theory of general relativity, which states that large cosmic objects like stars and black holes tend to distort space and time around themselves. Though widely believed to be true, this was something only conclusively proven recently, when we measured gravitational waves created by a collision between two black holes. In particular, large planets are believed to be capable of bending the time continuum itself, something Tippett says contributes to the curved orbits of planets in solar systems.

“The time direction of the space-time surface also shows curvature. There is evidence showing the closer to a black hole we get, time moves slower,” he explains. “My model of a time machine uses the curved space-time - to bend time into a circle for the passengers, not in a straight line. That circle takes us back in time.”

https://www.indiatimes.com/technology/s ... 76783.html

Scientists 'Reverse' Time Using A Quantum Computer, In Humanity's Biggest Achievement Ever
You know time travel movies talk about how altering the timeline can cause chaos, implode the universe, yadda yadda?
Well, we should probably go ahead and codify those into laws soon, because scientists have just used a quantum computer to effectively reverse time.
Ok ok, so they haven't swung reality backwards or anything, but they have demonstrated a phenomenon that goes against the laws of physics. Allow me to explain.
Researchers from the Moscow Institute of Physics and Technology. Along with colleagues from Switzerland and the US, built their "time machine" using a fairly rudimentary quantum computer. In regular computers, information is stored in bits, which is represented as a 0 or a 1. In quantum computing, qubits can be 0, 1, or even both simultaneously.
Anyway, so they designed an experiment called an "evolution program" that basically causes these ordered qubits to change into increasingly complex patterns of zeroes and ones. However, they also had another program designed to modify the state of the quantum computer in such a way that the experiment evolved backwards.
Basically, the chaos of the qubits rewound to their starting states and became ordered once more. To someone watching, it would have been like time rewinding.
That's in direct violation of the second law of thermodynamics, which governs how order progresses to chaos. It's like how a pile of dead leaves would scatter if the wind blew at it. If you recorded a video of that and played it backward, it would look completely strange.
And yet, that's exactly what this experiment achieved, by calculating the exact kind of gust needed to blow scattered leaves into a neat pile.
"We have artificially created a state that evolves in a direction opposite to that of the thermodynamic arrow of time,"said Dr Gordey Lesovik, lead researcher at the Laboratory of the Physics of Quantum Information at the Moscow Institute of Physics & Technology (MIPT).
Their system was able to perform this metaphorical time reversal with a success rate of 85 percent when using two qubits. When working with three however, it had a 50 percent error rate. However, the researchers believe this error rate isn't insurmountable, they just need more sophisticated hardware.

https://www.indiatimes.com/technology/s ... 63659.html
Feral cat
Posts: 262
Joined: 21 Dec 2017, 12:53
spamone: Animal

Re: Time Travel

Postby Bongalong » 14 Mar 2019, 13:58

Lol, 'order' :roll

-----------> :hot same old f'n bullshite magazine crap!!!!!!!!1
Posts: 2075
Joined: 25 Jun 2018, 12:48
spamone: Animal

Re: Time Travel

Postby Miranda » 14 Mar 2019, 14:32

Bongalong wrote:Lol, 'order' :roll

-----------> :hot same old f'n bullshite magazine crap!!!!!!!!1

Try this then...

Feral cat
Posts: 262
Joined: 21 Dec 2017, 12:53
spamone: Animal

Re: Time Travel

Postby HBS Guy » 14 Mar 2019, 16:45

I might be more interested in telekinesis. Had a nice day out in the Barossa Valley today, then driving back got to the city, same old traffic jam and I really wished there was a way I could instaneously be at home, skipping all the boorrrriiinnnnggggggg driving in heavy traffic!

Time travel, just need a nudge so the Frau Schickelgruber had a headache that night and Adolf never happened.
User avatar
Tractors to Australia
Posts: 51594
Joined: 27 Oct 2009, 15:37

Return to Off Topic

Who is online

Users browsing this forum: No registered users and 0 guests