Are time machines possible? (serious)

[sumana]

Hello.

I have read a little about time machines and going back in time, and whether that is considered possible according to modern physics.

[mentor's note - some additional text not relevant to the physical question has been removed]

 

[phinds]

Are time machines possible?

No.

 

[sumana]

Thanks. That's what I thought.

Can I ask which particular law of Physics prohibits it?

 

[phinds]

Thanks. That's what I thought.

Can I ask which particular law of Physics prohibits it?

Basically, it just causality. There are MANY threads on this forum about "time machines" so a forum search would likely give you some good discussion. A good place to start is the set of links at the bottom of this thread.

 

[sumana]

Thanks.

 

[Nugatory]

What phinds said.
Thread closed.