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Time Travel Impossible,Say Scientists(So Forget The Stakeouts in Early 1960's Kenya)
Discovery News ^ | July 24, 2011 | Staff

Posted on 01/29/2014 11:10:03 AM PST by lbryce


By proving a single photon can't travel faster than light, scientists say they have proven time travel is impossible.

THE GIST
Hong Kong physicists say they have proven a single photon cannot travel faster than the speed of light.

This demonstrates that time travel is impossible, they say.

Hong Kong physicists say they have proved that a single photon obeys Einstein's theory that nothing can travel faster than the speed of light — demonstrating that outside science fiction, time travel is impossible.

The Hong Kong University of Science and Technology research team led by Du Shengwang said they had proved that a single photon, or unit of light, "obeys the traffic law of the universe."

"Einstein claimed that the speed of light was the traffic law of the universe or in simple language, nothing can travel faster than light," the university said on its website.

"Professor Du's study demonstrates that a single photon, the fundamental quanta of light, also obeys the traffic law of the universe just like classical EM (electromagnetic) waves."

The possibility of time travel was raised 10 years ago when scientists discovered superluminal — or faster-than-light — propagation of optical pulses in some specific medium, the team said.

It was later found to be a visual effect, but researchers thought it might still be possible for a single photon to exceed light speed.

Du, however, believed Einstein was right and determined to end the debate by measuring the ultimate speed of a single photon, which had not been done before.

"The study, which showed that single photons also obey the speed limit c, confirms Einstein's causality; that is, an effect cannot occur before its cause," the university said.

"By showing that single photons cannot travel faster than the speed of light, our results bring a closure to the debate on the true speed of information carried by a single photon," said Du, assistant professor of physics.

"Our findings will also likely have potential applications by giving scientists a better picture on the transmission of quantum information."

The team's study was published in the U.S. peer-reviewed scientific journal Physical Review Letters.


TOPICS: History; Science; Travel
KEYWORDS: falsesyllogism; grandfatherparadox; strawman; stringtheory; timetravel
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As noted in the keywords, the grandfather paradox has always relegated the possibility of time travel to the genre of science fiction. The premise of the grandfather paradox seemed to have settled the question of time travel with the sceanrio in which someone goes back in time and kills his grandfather, which ultimately renders him non-existent and if so then he wouldn't be around to kill his grandfather which would then have his grandfather survive, securing the time traveler's existence as descendant, and so going back in time to kill his grandfather.....

And that speaks for any attempts at time travel as means to changing history. So, you might as well conjure up some other scenario for the failure of Obama-Don't-Care.

1 posted on 01/29/2014 11:10:03 AM PST by lbryce
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To: lbryce
I'd be more impressed with this conclusion if the scientists in question could tell me with some degree of certainty just what a photon is.
2 posted on 01/29/2014 11:12:38 AM PST by Oberon (John 12:5-6)
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To: lbryce

This merely proves (if correct) that a packet with zero rest mass cannot travel faster than light. That’s has been known from the math behind special relativity for a long time.


3 posted on 01/29/2014 11:12:50 AM PST by Pollster1 ("Shall not be infringed" is unambiguous.)
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To: lbryce

This can’t be true. I saw the movie Peggy Sue God Married—not to mention Back to the Future. Time travel all over the place. It happened in one of Ray Bradbury’s short stories too. How many examples do I have to give?


4 posted on 01/29/2014 11:15:28 AM PST by Fantasywriter
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To: lbryce

Dammit. I wanted to go back and get some cars.


5 posted on 01/29/2014 11:15:43 AM PST by Jeff Chandler (Obamacare: You can't make an omelette without breaking a few eggs.)
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To: Pollster1

“This merely proves (if correct) that a packet with zero rest mass cannot travel faster than light. That’s has been known from the math behind special relativity for a long time.”

True. And it is not true that faster than light travel necessarily equates to time travel. All of relativity is based on the idea that nothing can travel faster than light, and all of the related math flows from that premise.


6 posted on 01/29/2014 11:16:33 AM PST by PreciousLiberty
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To: lbryce

Agent J: There's no such thing as time travel.
Agent O: Well, there is.
Agent J: No. There's not. Because if there were, a class-one senior agent such as myself would have been made aware of it, wouldn't he have?
Agent O: Were it not classified and way above his pay grade.
Agent J: You know what? I need a pay raise.
7 posted on 01/29/2014 11:18:52 AM PST by DannyTN (A>)
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To: Fantasywriter

“Simpsons did it”


8 posted on 01/29/2014 11:21:12 AM PST by MrB (The difference between a Humanist and a Satanist - the latter admits whom he's working for)
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To: MrB

I didn’t know about that one. But as seen above, it’s in Men in Black too. Now the Simpsons.

The evidence just keeps piling up. I’d call it ‘settled science’ at this point.


9 posted on 01/29/2014 11:25:09 AM PST by Fantasywriter
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To: lbryce

I read about this in June 2045.


10 posted on 01/29/2014 11:25:12 AM PST by JRios1968 (I'm guttery and trashy, with a hint of lemon. - Laz)
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To: lbryce

Yes, of course, but this will not put an end to the wild-eyed believers who are absolutely convinced that “time travel” is possible.

Time is the measurement of motion. (St Thomas of Aquinas. Right then, right now, right always.)

As such, there is no way to travel in it.


11 posted on 01/29/2014 11:26:54 AM PST by I want the USA back (Media: completely irresponsible traitors. Complicit in the destruction of our country.)
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To: lbryce

Tell me that story again, Grandpa!


12 posted on 01/29/2014 11:27:27 AM PST by 1010RD (First, Do No Harm)
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To: lbryce
Did someone forget to tell this guy?


13 posted on 01/29/2014 11:28:27 AM PST by Lx (Do you like it? Do you like it, Scott? I call it, "Mr. & Mrs. Tenorman Chili.")
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To: Jeff Chandler

“Dammit. I wanted to go back and get some cars.”

Fret not, there’s still Cuba. But, then again, it’s in a different time dimension too :)


14 posted on 01/29/2014 11:29:13 AM PST by snoringbear (E.oGovernment is the Pimp,)
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To: lbryce

So that means we’re STUCK here??!!!!


15 posted on 01/29/2014 11:29:55 AM PST by Argus
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To: lbryce

Maybe they should test a faster proton. The one they picked might have been an out of shape overweight smoker.


16 posted on 01/29/2014 11:30:00 AM PST by smoothsailing
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To: lbryce

Yep. That’s what we thought in 2025, too.


17 posted on 01/29/2014 11:30:34 AM PST by Billthedrill
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To: Fantasywriter

There certainly is a “consensus”.

I believe it was one of the Halloween specials...


18 posted on 01/29/2014 11:33:09 AM PST by MrB (The difference between a Humanist and a Satanist - the latter admits whom he's working for)
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To: lbryce

“The possibility of time travel was raised 10 years ago when scientists discovered superluminal — or faster-than-light — propagation of optical pulses”

And at the time I said that “time travel” was impossible.


19 posted on 01/29/2014 11:33:27 AM PST by I want the USA back (Media: completely irresponsible traitors. Complicit in the destruction of our country.)
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To: lbryce

IOW, light cannot travel faster than the speed of light.


20 posted on 01/29/2014 11:35:51 AM PST by USFRIENDINVICTORIA
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To: smoothsailing

. . . or a Democrat.


21 posted on 01/29/2014 11:37:09 AM PST by MrChips (Ad sapientiam pertinet aeternarum rerum cognitio intellectualis - St. Augustine)
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To: lbryce

If time is simply the movement of system from a state of higher energy to a state of higher entropy, can someone explain how a particle’s ability to exceed the speed of light can equate to a reversal of entropy?


22 posted on 01/29/2014 11:38:52 AM PST by IronJack
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To: lbryce

Hmmmmm...and all these years I thought ludicrous speed was faster than light..my bad.


23 posted on 01/29/2014 11:39:35 AM PST by ratzoe (damn, I miss Barbara Olson)
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To: lbryce

I would like to travel to 2015, buy a copy of the Wall Street Journal, and then come back to today.


24 posted on 01/29/2014 11:41:46 AM PST by Fiji Hill
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To: lbryce
"If you're traveling in your car at the speed of light, and you turn on your headlights...do they do anything?"

--Steven Wright
25 posted on 01/29/2014 11:46:13 AM PST by Milton Miteybad (I am Jim Thompson. {Really.})
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To: lbryce
A few years ago an imaginative young man conjured up an intriguing emphatically unscientific approach to testing whether time travel was possible or not. This is a true story.

He rented a suite at some hotel, summoned a gathering of friends, acquaintances under the title of "2005 First Annual Time-Travel Symposium", hoping that a true time traveler would find the novelty of appearing at the very first Time Travel Convention much too alluring to pass up.

And while the concept appeared really interesting as some sort of temporal flypaper in getting time-travelers to appear and reveal the concept as very real, it was just too hokey to actually work. Besides, what aspect of time travel did the symposium offer to actually entice a true time traveler to show up other than mere rhetoric?

Perhaps, a souped-up Delorean or two might have done the trick.

26 posted on 01/29/2014 11:46:19 AM PST by lbryce (Obama:The Worst is Yet To Come)
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To: ratzoe

Still, it could have been worse. You might have beamed up, re-materialized with your face and ass heading in the same direction. :-)


27 posted on 01/29/2014 11:49:17 AM PST by lbryce (Obama:The Worst is Yet To Come)
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To: MrB

“I believe it was one of the Halloween specials...”

Sounds like a good one. Sorry I missed it.

And how about that great time travel classic, Idiocracy.

‘But Brawndo’s got what plants crave. It’s got electrolytes.’


28 posted on 01/29/2014 11:50:21 AM PST by Fantasywriter
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To: Fantasywriter

A great movie that I can’t talk about with my present circle of friends.
A great movie that I will never allow my kids to watch.


29 posted on 01/29/2014 11:52:27 AM PST by MrB (The difference between a Humanist and a Satanist - the latter admits whom he's working for)
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To: lbryce

“There was a sound of thunder.”

Anyone get the above reference?


30 posted on 01/29/2014 11:52:32 AM PST by Drawsing (Fools show their annoyance at once, the prudent man overlooks an insult. Proverbs 12:16)
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To: Fantasywriter
The evidence just keeps piling up. I’d call it ‘settled science’ at this point.

Agreed. The speed of light limitation is perhaps an intentional misdirection, as in sailing off the edge of the earth.

What is relevant and much more practical is to consider that all one has to do is to travel to one of the infinite number of parallel universes that is some precisely measured amount of time different (+ or -) than ours.

31 posted on 01/29/2014 11:52:48 AM PST by frog in a pot (We are all "frogs in a pot" now. How and when will we real Americans jump out?)
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To: USFRIENDINVICTORIA; lbryce

But, a photon with a flashlight traveling at the speed of light could turn on the flashlight, and voila, speed of light squared!


32 posted on 01/29/2014 11:53:22 AM PST by Larry Lucido (If you like your all your base, you can keep your all your base. - CATS)
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To: Fantasywriter
Time and Punishment
33 posted on 01/29/2014 11:54:01 AM PST by MrB (The difference between a Humanist and a Satanist - the latter admits whom he's working for)
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To: lbryce

Sheldon & Leonard will be saddened to hear this.


34 posted on 01/29/2014 11:54:08 AM PST by YHAOS
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To: lbryce

“By proving a single photon can’t travel faster than light, scientists say they have proven time travel is impossible.

My dad, who was a physicist in his own right, used to say “it’s impossible for something to be impossible...”


35 posted on 01/29/2014 11:55:23 AM PST by babygene ( .)
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To: lbryce
Hong Kong physicists say they have proved that a single photon obeys Einstein's theory that nothing can travel faster than the speed of light.

What about spooky action at a distance?

36 posted on 01/29/2014 11:59:03 AM PST by Slicksadick (We accept the love we think we deserve.)
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To: MrChips

LOL!


37 posted on 01/29/2014 11:59:28 AM PST by smoothsailing
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To: MrB

‘A great movie that I will never allow my kids to watch.’

You got that right. Starting w the futuristic version of Fuddruckers, and earns its rating from that point onward. Still a good movie, though.


38 posted on 01/29/2014 12:04:31 PM PST by Fantasywriter
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To: lbryce
Nonsense, I myself am a time traveler. I go only into the future though, one day at a time.
39 posted on 01/29/2014 12:05:17 PM PST by Vince Ferrer
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To: I want the USA back

But this was based on a NEW grant. So that’s different.


40 posted on 01/29/2014 12:05:19 PM PST by SgtHooper (If at first you don't succeed, skydiving is not for you.)
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To: babygene
Click Here:YouTube:Perry Como:It's Impossible


41 posted on 01/29/2014 12:06:48 PM PST by lbryce (Obama:The Worst is Yet To Come)
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To: Milton Miteybad

Nope. They just sit there turned on.


42 posted on 01/29/2014 12:07:20 PM PST by SgtHooper (If at first you don't succeed, skydiving is not for you.)
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To: frog in a pot

‘What is relevant and much more practical is to consider that all one has to do is to travel to one of the infinite number of parallel universes that is some precisely measured amount of time different (+ or -) than ours.’

Gmta. I had the same idea, though admittedly in a fictional format.


43 posted on 01/29/2014 12:08:18 PM PST by Fantasywriter
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To: MrB

Thanks!


44 posted on 01/29/2014 12:09:12 PM PST by Fantasywriter
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To: lbryce

I was just discussing this with someone next week.


45 posted on 01/29/2014 12:09:12 PM PST by GreenHornet
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To: Oberon
...it's a floor cleaner...No!...it's a dessert topping! I think a photon is a particle produced by an energy wave. If that's true, then the question becomes...Where is the photon produced? Do you see a particle that has travelled (like produced on the Sun) or do you just see the particle from the atoms surrounding your eyes?

Regarding time travel, I think these guys are off base and so was Einstein, a bit. How can a universal constant use a time division unique to only one planet in the universe?

46 posted on 01/29/2014 12:12:35 PM PST by gr8eman (How ya doin Bob?...Bitchen!)
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To: lbryce

It has long been established that the rules of normal space are such that the speed of light cannot be transcended within it. But that is just normal space. So for years theorists have supposed an alternative space with different rules.


47 posted on 01/29/2014 12:13:00 PM PST by yefragetuwrabrumuy (WoT News: Rantburg.com)
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To: GreenHornet

It’s funny but just last week I laughed at your joke all day.


48 posted on 01/29/2014 12:17:24 PM PST by lbryce (Obama:The Worst is Yet To Come)
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To: smoothsailing

“Maybe they should test a faster proton.”

Or how about a Tachyon?

https://en.wikipedia.org/wiki/Tachyon


49 posted on 01/29/2014 12:17:28 PM PST by Dr. Bogus Pachysandra ( Ya can't pick up a turd by the clean end!)
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To: lbryce

I’m thinking that in order to “time travel” we need to step into another dimension. The speed of photons has nothing to do with it. The Risen Christ’s comings and goings on the first Easter Suggest to me that He merely switched from our dimension to another to deliver His she blood to the Heavenly Mercy Seat, and be back again in just a few hours to walk with Mr. & Mrs. Cleopas to their home in Emmaus, etc. Just my humble opinion.


50 posted on 01/29/2014 12:17:46 PM PST by Tucker39 ("Having their conscience seared with a hot iron.")
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