Time Travel

Emp_Fab

No.  Nothing like it at all sorry.

octatonic

Caffeine_Vampire said:

I’m confused. Why would anyone want to revisit 2018?

£5 says 2019 will be worse.

Emp_Fab

Travelling backwards in time is not possible.  Travelling forwards at different rates is possible though.

Emp_Fab

Anyone care to calculate at what latitude you would need to fly West at 500mph in order to remain 'stationary' in time?

scalino65

hang on though. If you were standing right on the exact north (or south) pole wouldnt it be all times at the same time? thats like, far out, man.

Fretwired

Emp_Fab said:

Travelling backwards in time is not possible. 

That's not strictly true ... ;-)

https://medium.com/starts-with-a-bang/how-traveling-back-in-time-could-really-physically-be-possible-b212517d01c9

octatonic

Emp_Fab said:

Travelling backwards in time is not possible.  Travelling forwards at different rates is possible though.

Not currently possible is more accurate.
Travelling forwards at different rates: If you mean time dilation then yes this demonstrably possible but it doesn't preclude time travel into the past.

General relativity does provide scenarios where it is possible to go back in time, according to NASA- at least mathematically.
We also don't know if wormholes are a thing yet, nor if cosmic strings, or infinite cylinder theory are.
It isn't likely to happen in our lifetime.

Emp_Fab

No.  It is true.  That article discusses an unproven hypothesis.  Time dilation, to the best of my knowledge, is a demonstrable phenomenon.

Funkfingers

Caffeine_Vampire

octatonic said:

Caffeine_Vampire said:

I’m confused. Why would anyone want to revisit 2018?

£5 says 2019 will be worse.

No way am I taking that bet. 

ICBM

octatonic said:

Emp_Fab said:

Travelling backwards in time is not possible.  Travelling forwards at different rates is possible though.

Not currently possible is more accurate.
Travelling forwards at different rates: If you mean time dilation then yes this demonstrably possible but it doesn't preclude time travel into the past.

General relativity does provide scenarios where it is possible to go back in time, according to NASA- at least mathematically.

At quantum level. Backwards time travel at any larger scales is likely to be impossible, rather than a technological problem.

octatonic said:

£5 says 2019 will be worse.

Is that £5 at pre-Brexit or post-Brexit values?

ArchtopDave

Emp_Fab said:

In reality, any plane that is near to a time-zone border today can experience this.  e.g. A flight heading West over Ireland at 23:59 will be in 2018 until midnight arrives, when it will be in 2019.  However, once it crosses the West coast of Ireland, it will move into the UTC -1 zone, which will be 23:XX back in 2018.

Depending on the ground speed of the plane and the latitude it’s flying at, it will either end up back in 2019 if it fails to reach the next time zone within an hour, or - if it’s northerly (and fast) enough - stay in 2018 until it lands.

I'm surprised Ryanair don't offer annual Irish Time Travel Experience flights.

prowla

Don't mess with time or there could be riots!

https://www.historic-uk.com/HistoryUK/HistoryofBritain/Give-us-our-eleven-days/

digitalscream

Fretwired said:

Emp_Fab said:

Travelling backwards in time is not possible. 

That's not strictly true ... ;-)

https://medium.com/starts-with-a-bang/how-traveling-back-in-time-could-really-physically-be-possible-b212517d01c9

That article kinda glosses over the actual problem inherent with the very beginning of their idea - the supermassive black hole and its negative counterpart. Sure, you could create the wormhole, but in order to actually use it you'd have to - at some point - end up inside the event horizon of a black hole.

As I understand it, that's not an especially comfortable place to be.

RaymondLin

Back in when concord was in operation you could in theory celebrate New Years in London then go to NYC and do it all over again.

quarky

Fretwired said:

Cool, but its not technically time travel though ....

Just being a pedant, but it probably is. Because of the general theory of relativity and the constant speed of light, you can imagine that you are always moving at a constant speed through space/time. As your speed in space approaches the speed of light, it distorts your speed through time. 

Admittedly, there would be measurable effect on a commercial jet crossing the date/line, but there must be *some* effect

Fretwired

Emp_Fab said:

No.  It is true.  That article discusses an unproven hypothesis.  Time dilation, to the best of my knowledge, is a demonstrable phenomenon.

The ancient Greeks never thought man would set foot on the Moon. Our knowledge of science is limited so who knows what maybe be possible.

PhilW1

If I could turn  back time I would never have bought that fuckin time machine.

thecolourbox

quarky said:

Fretwired said:

Cool, but its not technically time travel though ....

Just being a pedant, but it probably is. Because of the general theory of relativity and the constant speed of light, you can imagine that you are always moving at a constant speed through space/time. As your speed in space approaches the speed of light, it distorts your speed through time. 

Admittedly, there would be measurable effect on a commercial jet crossing the date/line, but there must be *some* effect

But time "on the clock" and when years start and end address surely made up concepts so measuring an absolute truth by them is moot.

Emp_Fab said:

Anyone care to calculate at what latitude you would need to fly West at 500mph in order to remain 'stationary' in time?

 Wherever you like, just take the battery out of your watch

quarky

thecolourbox said:

quarky said:

Just being a pedant, but it probably is. Because of the general theory of relativity and the constant speed of light, you can imagine that you are always moving at a constant speed through space/time. As your speed in space approaches the speed of light, it distorts your speed through time. 

Admittedly, there would be measurable effect on a commercial jet crossing the date/line, but there must be *some* effect

But time "on the clock" and when years start and end address surely made up concepts so measuring an absolute truth by them is moot.

Absolutely not. Time measured on a super-accurate watch would be different from someone who flew at speeds approaching the speed of light for a short distance than for someone who didn't, when they both got back together.