quantum mechanics

Hi. It's me again. You may know me from my previous thread "I don't think space is expanding". Well, here's another idea for you. Background: when I first came up with this, it was in the context of photons work on electrons, and gravitons must work on photons, so .... what we see is actually...

Sorry to be starting a new topic just to ask a question about David Bohn but I couldn't see anywhere else to tag it onto. I find it extremely difficult to use the 'search' facility. David Bohn was mentioned in a topic on GH, by a poster who leans towards woo! I listened to the Wikipedia page...

https://www.forbes.com/sites/startswithabang/2020/05/26/observing-the-universe-really-does-change-the-outcome-and-this-experiment-shows-how/ An interesting read. As usual I don't understand it all so no point my putting up an incorrect interpretation of what it means or even how correct it is...

So part of writing is world building, and based on the idea that different Universe can have radically different physics, one of things I have been considering is how a universe would work if physics worked slightly differently to how it is believed to work in our own. My idea is a universe...

The Observer Effect The unobserved quantum realm doesn't care about time or distance so the order goes something like this: quantum field excitation of a new particle is about to happen it gets assigned a path in the quantum field if the path contains a spacetime enactor (a detector), it...

Physicists can predict the jumps of Schrodinger's cat (and finally save it) Yale researchers have figured out how to catch and save Schrödinger's famous cat, the symbol of quantum superposition and unpredictability, by anticipating its jumps and acting in real time to save it from proverbial...

Every Australia Day this award has been given. There are far too many sportspeople, a country and western singer and, to our eternal shame, con man, thief and jail bird Alan Bond. But last year it went to a Biomedical Scientist and this year to Michelle Simmons...

I'd like to introduce people to this talk titled The Higgs Boson and the Fundamental Nature of Reality by physicist and skeptic Sean Carroll. Vrs-Azp0i3k In it, Dr Carroll explains that while there is still much left to discover about the Universe, the fundamental physics of everyday life is...

Quantum information transfer confirmed. Einstein wrong (didn’t he say it couldn’t happen?). Is this news? If this experiment turns out to be reliable, what explains it? How does it happen? http://hansonlab.tudelft.nl/teleportation/ http://www.sciencemag.org/content/early/2014/05/28/science.1253512

I had a great high school physics teacher back in the '70s, and felt pretty confident about my ability to understand Newtonian physics. We covered a lot of material, and it happened that the material fit in very well with the math courses I was taking. Maybe that wasn't a coincidence; I don't...

Okay. Here's hoping to hear from some of you theoretical physicists and cosmologists. Particle-antiparticle pairs are popping into existence all the time, but the energy of the universe as a whole is conserved because they annihilate each other quickly. When this occurs near the event horizon...

Sometime in the my dim distant past, before the days of the Internet when paper still ruled, I remember reading an article in ISTR a science fiction magazine that claimed the the Universe was a Black Hole because it was of the right density to be one -- the size of a black hole been dependent on...

We are familiar with the idea that mass and energy are equivalent from the famous equation E= mc2. If mass and energy are one and the same, why do we need two different forces- gravitational and electromagnetic? As photons ‘aggregate’ into matter, the resultant decrease in the number of ‘free...

Do you think it is possible to directly measure the wave-function of quantum mechanics?

I was listening to a proposal requesting that my office purchase some new project management software and the guy told us that adopting his stuff would provide a "quantum leap" in capabilities. In my purely social scientist (psychology and conflict analysis) mind, quantum physics relates to the...

Hello Forum I have come across the research of a scientist named Frank Znidarsic and wondered what others think about its focus. His work in Bose-Einstein condensates, advancement of the super-conductive work of Eugene Podkletnov, and the transition of an orbital electron to a different...

http://www.uncletomsclassroom.com/ I don't know where to begin...

I watched my first "Through the Wormhole" episode last night on time travel. What do others think of the series? I was underwhelmed. Pizzas and cartoonish figures with hammers, and a whole lot of "If this were true, then that would be true and time travel might be possible," etc. Is it worth...

This has, almost surely, been answered somewhere in thei forum in the last two years, but as everyone kno0ws, the noise in cosmology and astrphysics is abnormally high, and so I'd like to seek a specific answer from our panel of experts. For those who don't know about it already, the Cassiopeia...

Not that that's a bad thing, but I just wanted to cogitate out loud about this. "Science, all science, is founded on the idea, the belief, if you will, that laws that affect A at location X, will also affect B at location Y in the same way. That laws are universal." I was taught this by my...

Do you have 5 minutes and 48 seconds to watch the late Robert Anton Wilson give his thoughts on Quantum Physics and a few other things? http://www.youtube.com/watch?v=XEZtw1yt8Kc If anyone cannot access youtube just send me a P.M. and I'll compress and send this 10.9 MB flv to you. I can...

Ok, I have never taken a physics class, and readily able to plead ignorance whenever the subject comes up. However, between the recent article about building a larger QM structure, and the new movie Repo Men which contains a narrative by Jude Law on the scientist, cat, and poison filled box, I...

This sounds pretty far-fetched to me. I'm not even sure what it means. http://www.nature.com/news/2010/100317/full/news.2010.130.html

I'm John Duffield, and a few weeks back I was talking to a guy who's a member of the ISST. I was looking something up and bumped into a discussion here about causality, FTL, and time travel, so I explained why time travel is science fiction. I then got sucked into backup details that rather...

I know next to nothing about quantum physics, but just having read “The Fabric of the Cosmos” by Brian Greene feel that I now have a good layman’s understanding of the principles. While pondering the weird and wonderful quantum world I came up with the following setup: A photon emitter (PE)...

I'm about two thirds through Anathem, by Neal Stephenson. It is a well-written story that attempts to cover many of the issues of science, philosophy and religion dealt with in threads on this forum. If you enjoy stories where people have obscure arguments for page after page (I do) then it's...

I find science fascinating and baffling in equal measure but I think I had a mini breakthrough moment today regarding the QM double slit experiment. I wonder if someone can confirm my thinking. Recapping... The experiment has the following results for patterns detected on a screen: A full on...

Had a quick read of this article: http://news.bbc.co.uk/2/hi/science/nature/8363934.stm And have a question about just this: How small do the slits have to be in order to let only one photon through??

I'm delurking for some help with some basic quantum curiosity. I'm fairly comfortable with the double slit experiment. What I would like to know is what would happen with a slight modification. If instead of using single particles or a bunch.... what if everything ejected at it was an...

Here they view the electron cloud of an atom in unprecedented detail, including the first two orbital types: sphere and butt Xerox. So far so good. But I thought these were "probability clouds", i.e. just a mathematical definition of the satistical probability an electron would be at each...