what does quantum mechanics mean? (UPDATED)

speed limit of light is a problem for should be no speed limit I like in the woods should be back there even know I'm not a factor to look at it and he's a big pig problems any I lied to me that more live inside a simulation.

another problem would be the speed limit of light and how to time slows down when you get close to the speed of light now if you went past the speed of light time with starts ticking slower then go back  again which everything would go back to the way they came and this cannot happen there's a paradox.

the other little problem black holes and the surface of  blackholes and of the universe that we supposed to live on and yet we see that were inside part of the universe or not it's all in allusions and so is time and it's only happening in  a simulation .

is a lot of things about the laws of physics that are not the should not be possible it's a pretty easy to imagine a ball goes down a hill it never goes any other way there shouldn't be a speed limit on any speed to break the speed of light anytime time. the moon should always be there even when you're not looking at.

is time an illusion. is the moon always up there even when you're not looking at it. can you ever go past speed of light. are we really living inside of a hologram. 

what is a brain what does a brain do and bring your dreaming of your brain create a reality  even thou you're not in it. 

 is this what it's like to be awake

christopher stokes
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Back in 2011, a survey was taken of various physicists and mathematicians at a conference on “Quantum Physics and the Nature of Reality” in Austria. Thirty-three of the world’s top experts were asked to list their favorite interpretation of quantum mechanics.

Niels Bohr is very disappointed in you all.
The result? Not a single one of the interpretations could even garner a simple majority vote. Ninety years after the theory was first developed, there’s still no consensus on what quantum physics actually means. “I’ll go out on a limb to suggest that the results of this poll should be very embarrassing to physicists,” wrote cosmologist Sean Carroll.
(On the plus side, the theory turns out to be very, very, very, very accurate in making experimental predictions. So there’s that!)
In the video below, Carroll breaks down the basics of why scientists can’t seem to agree on how to interpret quantum mechanics — and explains why it’s so critical: ”What is quantum mechanics, really? I mean, that’s like saying ‘what is the Universe?’ What more important question is there than that?”
It’s a little longer and nerdier than our usual Lunch Break videos, but probably worth it in the end.
By Tia Ghose, LiveScience

They knew it was true, but now they've shown it: Scientists have demonstrated that the uncertainty principle, one of the most famous rules of quantum physics, operates in macroscopic objects visible to the naked eye.

The principle, described by physicist Werner Heisenberg nearly a century ago, states that the mere act of measuring the position of a particle, such as an electron, necessarily disturbs its momentum. That means the more precisely you try to measure its location, the less you know about how fast it's moving, and vice versa.

While in theory this principle operates on all objects, in practice its effects were thought to be measurable only in the tiny realm where the rules of quantum mechanics are important. In a new experiment, described in the Feb. 15 issue of the journal Science, physicists have shown that the uncertainty principle effects can be detected in a tiny drum visible to the naked eye.
Small world


The uncertainty principle is based on how disruptive any act of measurement is. If, for instance, a photon, or particle of light, from a microscope is used to view an electron, the photon will bounce off that electron and disrupt its momentum, said study co-author Tom Purdy, a physicist at JILA, a joint institute of the University of Colorado, Boulder and the National Institute of Standards and Technology. [Wacky Physics: The Coolest Little Particles in Nature]

But the bigger the object, the less of an effect a bouncing photon will have on its momentum, making the uncertainty principle less and less relevant at larger scales.

In recent years, however, physicists have been pushing the limits on which scales the principle appears in. To that end, Purdy and his colleagues created a 0.02-inch-wide (0.5 millimeters) drum made of silicon nitride, a ceramic material used in spaceships, drawn tight across a silicon frame.


Tom Purdy


The tiny drum was placed between two mirrors and illuminated with laser light, and the shaking of the mirrors revealed the uncertainty principle in action.

They then set the drum between two mirrors, and shined laser light on it. Essentially, the drum is measured when photons bounce off the drum and deflect the mirrors a given amount, and increasing the number of photons boosts the measurement accuracy. But more photons cause greater and greater fluctuations that cause mirrors to shake violently, limiting the measurement accuracy. That extra shaking is the proof of the uncertainty principle in action. The setup was kept ultra-cold to prevent thermal fluctuations from drowning out this quantum effect.

The findings could have implications for the hunt for gravitational waves predicted by Einstein's theory of general relativity. In the next few years, the Laser Interferometer Gravitational Wave Observatory (LIGO), a pair of observatories in Louisiana and Washington, is set to use tiny sensors to measure gravitational waves in space-time, and the uncertainty principle could set limits on LIGO's measurement abilities.

LIGO's measurements "will be many orders of magnitude more microscopic than ours," Purdy told LiveScience.

The results of the recent experiment are novel in that they show both classical and quantum mechanics operating on the same scale, said Saurya Das, a theoretical physicist at the University of Lethbridge in Canada, who was not involved in the study.

"Half a millimeter is like something which we can actually hold in our hand," Das told LiveScience. "Obviously classical mechanics is valid, but they make quantum mechanics relevant at that size."

As a technical accomplishment, it's also impressive, Das said.

"At that scale, even 10 years ago people would have thought there's no point of doing this experiment, because you wouldn't have seen anything."



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