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posted by n1 on Friday May 22 2015, @05:09AM   Printer-friendly
from the no dept.

Owen Maroney worries that physicists have spent the better part of a century engaging in fraud.

Ever since they invented quantum theory in the early 1900s, explains Maroney, who is himself a physicist at the University of Oxford, UK, they have been talking about how strange it is — how it allows particles and atoms to move in many directions at once, for example, or to spin clockwise and anticlockwise simultaneously. But talk is not proof, says Maroney. “If we tell the public that quantum theory is weird, we better go out and test that's actually true,” he says. “Otherwise we're not doing science, we're just explaining some funny squiggles on a blackboard.”

It is this sentiment that has led Maroney and others to develop a new series of experiments to uncover the nature of the wavefunction — the mysterious entity that lies at the heart of quantum weirdness. On paper, the wavefunction is simply a mathematical object that physicists denote with the Greek letter psi (Ψ) — one of Maroney's funny squiggles — and use to describe a particle's quantum behaviour. Depending on the experiment, the wavefunction allows them to calculate the probability of observing an electron at any particular location, or the chances that its spin is oriented up or down. But the mathematics shed no light on what a wavefunction truly is. Is it a physical thing ? Or just a calculating tool for handling an observer's ignorance about the world ?

http://www.nature.com/news/quantum-physics-what-is-really-real-1.17585

 
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  • (Score: 5, Interesting) by JeanCroix on Friday May 22 2015, @02:15PM

    by JeanCroix (573) on Friday May 22 2015, @02:15PM (#186460)
    After earning my bachelor's engineering degree, I started down the path toward a masters in applied physics. It was exactly the kinds of questions this article discusses which sent me screaming back to the engineering department after a single semester. Even applied physics seemed far to intangible (and not very practical for earning a future living outside of academia) to my engineer brain.
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