So parallel universes really do exist?

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[quote="Max1951"]"I don't get it. Quantum physics are totally beyond me."

A great Physicist, Richard Feynman, said "If you think you understand quantum mechanics, you don't understand quantum mechanics."

Don't try to understand it. It works for GPS and so many other gadgets we've made, that we know there must be a lot of truth in it.

[/quoute]

Quantum physics is necessary for making atomic clocks that keep very accurate time. However the main theories underlying GPS are the Special Theory of relativity and the General theory of relativity. Both are necessary for correcting the timing transmitted from the GPS sattalites. Special theory is using for compensating the slow down of clocks when moving at non zero velocities and General Theory is used for compensating clocks that speed up when they are in a lesser gravitational field.

ruveyn

"However the main theories underlying GPS are the Special Theory of relativity and the General theory of relativity."

Thanks of the correction and the info on how the GPS works.

Wouldn't LED, LCD, and LASERs be other examples of gadgets based on quantum theory?

Have you ever had someone say they feel like they've known you for a long time, but you just met the person? (Excluding people who want to have sex with you.) Or you feel like you have SO much in common with someone you just met? If there are parallel universes, could each one be just one step different than the one you're aware of? Could someone step from one universe to another? Could Kaspar Hauser have dropped in from a parallel universe? Could certain authors have glimpsed such a place and then written about it?

doppelgangers?

Prof_Pretorius, those are very exciting ideas!

auntblabby, that's another interesting idea. Two real stories here:
Not just once, but twice in a rather short time when I was in my early/mid teens, a younger girl I didn't know asked me if I was the sister of Lars Kristian (possibly spelled Christian, both spellings are allowed here).
No idea who any of them are. She was alone too, so I don't think it was some kind of joke.


My aunt was on a train some decades ago when she saw my father sitting in the same car. She said hi, but he just stared at her. Next day she asked him why he hadn't greeted her on the train yesterday.
He hadn't been on the train the day before.
That actually gives me shivers that someone was so alike my father that his sister didn't tell them apart.

It would be very interesting if we slid to parallel universes that only had minute differences to an extent that we wouldn't even know.

I wasn't aware that alternate universes would be so close together.

If we're speaking of relativity is there really such thing as a "close together" or "far away?"

way above my pay grade. but I was speaking of the seeming transient intermingling of dimensions that would allow for people to see their alternate selves.

Very much so. Without quantum physics these devices would not have been invented.

ruveyn

It would be exciting...

is there [out of countless parallel universes] one "master" or "first among equals" universe?

That idea was the basis of Roger Zelazny's "Amber" series. There is one "real" world and all the others are offshoots, or "shadows." Its a cracking series of books, with the characters jumping between the various worlds.

something like "sliders"?

something like "sliders"?

Oh, "Sliders" were exciting!