China Swears It Isn't Building a Time Machine

That's actually no secret, they're already leading the way in quantum entanglement data transfer over the longest distances in space.

 

Because no one says it works, doesn't it mean it doesn't work.

How do we know that China didn't go back in the past and help it's culture already?
They probably just went back and helped dynasties from Shang to now, helping make China
over 3, 000 years old now, when perhaps before, it was only 70?..
Point is, how do we know it doesn't work?

That Great Wall of China as seen from Space?
Maybe it was inspired by Donald Trump?

How do we know it doesn't work?

 

OMG... It's the dragons init.

Flying, fire breathing "scales"....

It's the dragon.

It always was;

The Dragon.



least I know UK is gonna get one (a time machine).

 

I've never heard of a physicist who thought quantum entanglement could be used to pass information - to communicate.

The reason is that when you have a particle that is entangled with another particle somewhere else in the universe, all you can do is ASK your particle what state it is in. The result is really cool, BUT it doesn't include any news you may want to communicate. All you did was ASK the particle. That's not news. The particle at the other end has no information that you may have wanted to communicate.

If you want to communicate, you have to TELL the particle what news you have to communicate, and telling the particle anything breaks the entanglement.

Here's a description:

Link -> The real reason quantum entanglement doesn't allow faster than light communication

 

Quantum entanglement has been demonstrated when used to send secure messages from Earth to a satellite that are impossible to decode by someone eavesdropping. It relies on the fact that as soon as someone intercepts the message it immediately becomes garbage due to the principles of entanglement. If memory is correct it relied on the header information being known by the receiver and transmitter The experimental details were released a couple of years ago and short messages were "sent"successfully

My memory of the details is a bit sketchy so I might look it up to see if I've remembered correctly

 

Interesting. Of course, we should get a more detailed explanation of exactly what was done.

I curious about what is meant by "header information", as the entanglement only involves the entangled particle.

I certainly agree with the security angle! Nobody is going to be able to intercept the entanglement.

 

I've found these two linkd which describes the principles but can't find the actual report that I was referring to.
https://www.livescience.com/59810-quantum-teleportation-record-shattered.html

https://www.google.com/url?sa=t&sou...FRAB&usg=AOvVaw3SgSYnqlXJUfyvHSu1cHnY&ampcf=1

It looks like I was confusing header info with key info

 

Cool links!!

The first one includes:

That first paragraph is what I've pointed to.

The second is clearly interesting in that there IS something significant to be gained by an authentication system that would be literally impossible to defeat, if such could be created.

But, I don't see them claiming that there is a message being sent at faster than the speed of light. It's just the authentication that includes faster than light speed. (And, I don't understand that authentication system, so??)

Or, so I think is the case - I'm not a physicist!

 

great book and movie

 

The idea has been kicking around for at least 70 years.

 

And it's basically unhackable because it's a paired particle mirrored to it, and only it.

 

It cannot be detected as a transmission because it isn't one.

When you study this in QM, the first thing you have to do is to prove it cannot be used to communicate faster than the speed of light. That possibility is every student's first impulse. But no cigar.

 

I see you already covered it. *whoops.

 

I never said I knew how it was unhackble, just that it's unhackble.

 

Back to Time Machine...

Do you think that's why China is like 3, 000 years old (now)?
And what's up with all those dragons in different parts of the world including China?!
Time Travel?

The Great Wall of China, based on Donald Trump's wall, built in a more 'Fuedle Era'?
Who knows?
The Chinese, that's who.

 

So, if I go back a week in time to buy a winning lottery ticket would the act of buying a ticket change the result?

 

Time travel probably would not work that way. In all likelihood if a time machine were possible each time it was used would move a person into what amounts to a parallel universe alive the original one he or she left in virtually all respects but still different in a few. Thus it would be impossible to "return" to the same universe or timeline that you started at.

 

We Americans have been doing that for decades, it's called "watching C-SPAN".....

 

And it is crackpot nonsense.

We know how to slow down time. You travel near the speed of light or you are located near a massive body.

That's it.

 

Ha, you got me there!

 

china doing an humble-brag?

 

I believe there was a time machine in the 1950's / 1960's in Liverpool, England operating somewhere around Bold Street causing anomalies that was momentarily dragging modern day people back to this time period in a phenomenon known as 'timeslip'.
I only say this because last night 'out of nowhere' I learned of heightened cases of 'timeslips' occurring around a concentrated area in Liverpool.

After lock down and if we get our freedoms back, I plan to take a trip up there (I'm from London, never been to Liverpool in my life) to check it out.

But to investigate, how would I go about doing that?

Would I need any equipment to detect and what should it even look for?
'Tachyons spring to mind', or whatever the Chinese are working on, their research could help me in to 'what to look for', before I worry about 'how to look for it'.

If in the likely case of having no equipment handy, what do I do?
Hit the streets asking friendly locals working in the shops there (it's a retail district) and track down potential witnesses to those who were around in the 1950's / 1960's as well as people who claim to have timeslipped to then?

 

Just so you don't have a completely wasted trip I recommend you visit the maritime museum. Failing that you could go on the Beatles tour and visit the houses the Fab Four grew up in or sites such as the Strawberry Fields children's home or Penny Lane.

 

That's funny, I've never even heard of that, but did want to go to a maritime museum in Portsmouth to see the wreck of the Mary Rose (random day trip idea I had), which coincidentally was next to the HMS Victory so would have saw that too - and I'm not really into that type of stuff, hence the randomness of your suggestion and me actually having another one in mind already.

I figured I'd gauge how big Liverpool was from any trip to Bold Street and... Look for things I recognised, and maybe a Beatles museum lol.

So...

What's at this Liverpool Maritime museum then if you suggest it for a thing to do while in Liverpool.

To be honest, I've never even heard of Bold Street until last night.

 

To be honest with you I never went to the Maritime museum. My girlfriend at the time wanted to go on the bloody Beatles tour and even though we had agreed to do both she dragged me into an Elvis memorabilia exhibition on the way to the museum and we ran out of time. So instead of doing what I wanted to do we had to look at fricking ticket stubs and silly sequined costumes in glass cases at the really disappointing Elvis exhibition.
I never did forgive her.
Have you been to the Cutty Sark in Greenwich? If I ever go to London again it's very high on my list of places to visit.