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Physicists Smash Record For Wave-Particle Duality
KentuckyFC writes "One of the central concepts in quantum theory is wave-particle duality — that every object can be thought of as a particle and a wave. Indeed every object has a quantum wavelength associated with it and so can form a quantum superposition with itself. That's easy to demonstrate with fundamental particles such as photons and electrons by passing a beam of them through a double slit and watching the interference pattern that forms on the other side. In this way, physicists have observed the interference patterns associated with atoms and even molecules such as buckyballs. Now, a group at the University of Vienna has observed the interference pattern formed by the quantum superposition of molecules containing over 800 atoms, or around 5,000 protons, 5,000 neutrons and 5,000 electrons. That's the most macroscopic occurrence of wave-particle duality ever observed, they say."
Wake me up when they can find the wavelength of a Turtle, because quantum theory holds that the universe is made of picoturtles. Why should anyone believe quantum "science"?
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I won't be happy until they get a whole cat to exist in superposition.
Then a lab assistant.
THEN THE WORLD!
There are some really interesting experiments going on these days with QM behavior of macroscopic objects (micrometer-scale). I've seen descriptions of MEMS cantilevers built and they measure its vibrational modes, and these guys describe how they did it using reflected laser light. The trick is to cool the device to get rid of the phonons and detect when it falls into the ground state.
No. They observed what we already expected. Our currently best theories predicted it. But then, our then-best theories didn't predict the null result of the Michelson-Moreley experiment, or the photoelectric effect. We don't really know it until we tried.
Note that there are theories which postulate a modification of quantum mechanics for sufficiently large objects as solution to the measurement problem. Therefore measurements like this can indeed differentiate between competing theories. Although I think you'd need to test even larger objects to test those theories.
The Tao of math: The numbers you can count are not the real numbers.
Finally they can stop scratching at doors until you let them through. Best invention ever!
Socialism: a lie told by totalitarians and believed by fools.
love this one:
"In 1906, J.J. Thompson had received the Nobel Prize for proving that electrons are particles;
in 1937 he saw his son awarded the Nobel Prize for proving that electrons are waves.
Both father and son were correct, and both awards were fully merited."
http://en.wikipedia.org/wiki/J._J._Thomson
http://en.wikipedia.org/wiki/George_Paget_Thomson
It's the political holy grail! They will be able to vote yes and no at the same time.
Politicians are already in a superposition of their principles - the measurement of what those principles are depends entirely on the who the observer is doing the measuring.
My God, it's Full of Source!
OUTSIDE_IP=$(dig +short my.ip @outsideip.net)
yes most marriages until recently were single slit experiments, but now we allow double-slit marriages
Indeed, the understanding of decoherence has fortunately made great strides since Bohr and Heisenberg coined the Copenhagen Interpretation, and we have a much better understanding of how the interference 'dissipates'.
You are exactly putting the focus on the remaining most intriguing puzzle, why do we experience a single reality? I.e. only see one moon, as Einstein put it. To me it seems there's a deep link between decoherence and entropy lurking in there, something, that despite all the QIS progress, we still don't quite capture.