The quantum nature of the system may be generating a negative acceleration rather than a negative mass. Question is how to determine which of the two terms on the right side of the equation is negative.
This is the start of anti gravity.
Hmm, wonder why my reference to reversing gravity was deleted.
I do agree - it seems the laser cooling violates equivalence principle
The lack of "antigravity" that people seem to be expecting might come from a slight oversight in how gravitic attraction is calculated. Instead of accounting for just "mass", the proper equation might posit that this attraction accounts for the absolute value of the mass, not whatever state the mass might be in.
Of course, given that we haven't experienced "negative mass" before, it requires more study.
By the way, what do we seen in the picture
By the way, what do we seen in the picture
Go to the link at the bottom of the above article. There you can click on the image and get a full text description.
In short: You are seeing the expansion of a Bose-Einstein Condensate. The right side does not expand as expected and hence has a negative effective mass.
(Note that having an 'effective negative mass' is about the same as saying a photon has 'effective mass' via E= mc^2. We are not talking *real* negative mass, here. And most definitely we are not talking anti-gravity. We are talking "behaves as if it has negative mass", not "has negative mass". That's an important distinction)
From the diagram above the image of the expanding cloud I surmise that the momentum is captured in spin transitions. But without access to the full article that is just a guess.
Yes - it can be interpreted in the way, the vacuum fluctuations are wiggling with tiny particles - so that they cannot attract itself properly. This also gives them minute intrinsic acceleration, which doesn't require any apparent inertial force for to manifest itself - thus violating Newton inertial law. In MOND theory this acceleration is utilized for explanation of dark matter and its value https://ned.ipac....om3.html would lead into expansion and spreading of wave packet instead of its collapse with gravity. It also means, that if we divide and spread the matter in sufficient fine way, it will never collapse again, until its total mass will remain lower than so-called Planck mass. It's not very small value: for example the body mass of a flea is roughly 4000 - 5000 Planck masses.
It's an interesting bit of research, but why is it necessary to hype it by throwing around incendiary nonsense terms?
I am reminded of the search for Majorana fermions, and the confusion engendered when detection of Majorana bound states was announced. We still have never detected a free Majorana particle, though we are still looking; the most promising sector is neutrino physics, but we've pushed the possibilities down pretty far and not found anything. And this was ignored in the popular treatment of the bound Majorana states.
Positive polarity attracts, while negative polarity repels
These scientists are not seeing what they think they are seeing. The atoms are reacting to the laser beams. The rotating electrons change course when illuminated. The direction of this force depends upon the electron velocity vector and the polarity of the laser light beam. Positive polarity attracts, while negative polarity repels
I am confused. If F = ma, then if the mass (m) is negative, then either F or a has to be negative**. But if the mass accelerates towards the push, then is that negative or positive acceleration? Would seem to have to be positive acceleration.Traditionally, Newtonian mechanics (which is where F=ma comes from) doesn't differentiate; it's only when you start to talk about momentum that you need to start paying attention to signs. Force and acceleration aren't conserved; momentum is.
I am confused. If F = ma, then if the mass (m) is negative, then either F or a has to be negative**. But if the mass accelerates towards the push, then is that negative or positive acceleration? Would seem to have to be positive acceleration.Traditionally, Newtonian mechanics (which is where F=ma comes from) doesn't differentiate; it's only when you start to talk about momentum that you need to start paying attention to signs. Force and acceleration aren't conserved; momentum is.
That said, if you do elect to consider signs, then you can either choose to talk about positive and negative accelerations, OR talk about positive and negative forces, but not both. If you talk about both, then those two negatives would cancel.
Good question; for more information you should look into vectors, which you will find holds the answer to your question in detail rather than broad strokes as I have given here.
I'm reading the pdf and find that many of the statements in it offer direct support for my string theory variant. :)
I'm reading the pdf and find that many of the statements in it offer direct support for my string theory variant. :)
ST? Nice try. Start with a given truth. Charge exist, both negative and positive. OK, it's an isomorphic mathematical representation; however, with logic one sees that E is portional to the surface area of the sphere about the charge. Charge is Bipolar and is contained in "all" things. Therefore the idea, no matter what the representation, negative mass, and not a bipolar response has no defense. juz say'n
JongDan
Apr 17, 2017Apply a force – a potential field, and atoms will flow towards higher energy states – towards the direction the force was applied from.