Quantum time machine mooted (17 Jun, 2014)

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Quantum time machine mooted (17 Jun, 2014)

Postby aardvark_admin » Tue Jun 17, 2014 8:30 am

This column is archived at: http://aardvark.co.nz/daily/2014/0617.shtml

Will we ever truly understand the quantum world and what magic will we be able to create if we do?

If/once we do understand crucial forces such as gravity, will this open the door to warp-speed space travel, levitating craft and all manner of other things that have been predicted by scifi writers for decades?
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Re: Quantum time machine mooted (17 Jun, 2014)

Postby latewings » Tue Jun 17, 2014 9:13 am

Will we ever truly understand the quantum world and what magic will we be able to create if we do?


Never fear, there will be a journalist who's escaped his village to clear it all up for us.
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Re: Quantum time machine mooted (17 Jun, 2014)

Postby Stevesub » Tue Jun 17, 2014 9:30 am

FYI, there is now an atomic clock on a chip

http://www.microsemi.com/products/timin ... omic-clock

This is actually an option on some of the instruments that I sell.
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Re: Quantum time machine mooted (17 Jun, 2014)

Postby Hiro Protagonist » Tue Jun 17, 2014 10:06 am

aardvark_admin wrote: Because we're trying to detect the presence of marbles by throwing bowling balls at them, our very observations create massive disturbance at a quantum level -- and that's why we're stuck with the situation described by Heisenberg's Uncertainty Principle

<pedant>
Actually, what you're describing above is known as the Observer Effect. The Uncertainty Principle is thought to be an inherent property of quantum systems. From the Wikipedia entry: "the uncertainty principle actually states a fundamental property of quantum systems, and is not a statement about the observational success of current technology".
</pedant>

Interestingly an implication of uncertainty being a fundamental property is that quantum systems violate Local Realism: http://en.wikipedia.org/wiki/Local_realism, which is why entangled particles are able to maintain coherent quantum states while macroscopically separated .

"Anyone who is not shocked by quantum theory has not understood it" - Neils Bohr.
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