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[BBC] Physicists observe 'negative mass' - Page 4

post #31 of 47
Quote:
Originally Posted by Omicron View Post

This is easily way, way beyond me, so I'll leave this question to those who understand this better. (Yeah, this is probably a stupid question.)

Assuming you could take this "material" (it just sounds like atom level stuff at the moment,) and mix it with regular matter with mass, could this somehow make the material weigh "nothing" and have zero mass characteristics? Like, take a bar of gold, mix it and have it solid, and throw this "bar" as if it is Styrofoam?

I get the feeling this would never work and this "negative mass" stuff would try to rip through the mass it is mixed with and push the opposite direction when pushed... sort of like magnetic metal in someone during a MRI scan...

This sounds like something out of one of those troll physics memes.

I believe this has "negative mass" in the same way that some things can have "negative temperature", which is to say they don't really have it, but exhibit properties of it.
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post #32 of 47
So if this is negative mass could this possibly imply negative energy? Aka the stuff that we need to make a lot of the FTL Hypothesis work? I.E. The Alcubierre Drive?
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post #33 of 47
Quote:
Originally Posted by Zen00 View Post

I believe this has "negative mass" in the same way that some things can have "negative temperature", which is to say they don't really have it, but exhibit properties of it.

Thanks, I wonder if the properties could still be utilized in some useful way. No idea.
post #34 of 47
The scientific advances the west has discovered have raised the standard of living in africa more then all aid money combined, so this advance obscure and esoteric as it is is probably more helpful to african children then aid money and "peace" keeping combined.
post #35 of 47
Quote:
Originally Posted by Omicron View Post

This is easily way, way beyond me, so I'll leave this question to those who understand this better. (Yeah, this is probably a stupid question.)

Assuming you could take this "material" (it just sounds like atom level stuff at the moment,) and mix it with regular matter with mass, could this somehow make the material weigh "nothing" and have zero mass characteristics? Like, take a bar of gold, mix it and have it solid, and throw this "bar" as if it is Styrofoam?

In a word, no. The only way you can maintain a BEC is to keep it in complete isolation from other matter. As soon as it makes contact with other matter, you get a whole bunch of energy transfer to the BEC that destroys the very carefully constructed quantum mechanical structures, and the whole thing is just a blob of normal gas again.
Quote:
Originally Posted by Zhany View Post

So if this is negative mass could this possibly imply negative energy? Aka the stuff that we need to make a lot of the FTL Hypothesis work? I.E. The Alcubierre Drive?

Also no.

The term "negative mass" I'm rather certain is there to grab headlines and be overly dramatic. What they've done is construct a particular quantum state that is self-trapping, in that when they apply a force to it it stays in one spot. This isn't even remotely close to the weirdest thing done with quantum mechanics, and it has precisely zero applicability to normal matter because you can't take a spaceship and turn it into a BEC. You probably wouldn't like the results even if you could, either.
post #36 of 47
So if they are applying force, what are they applying force with and where does it go to get out of the way for the backwards acceleration? I have all sorts of layman's things going through my head which I know don't apply....like pushing on a yoga ball and although it might not really move it pushes back...or the car door vs a biker scenario where a vacuum is responsible for the bikers "negative acceleration".

I would read the journal but after reading that one quote...I try my luck here
post #37 of 47
Quote:
Originally Posted by Tjj226 Angel View Post

1: I couldn't care less about the children in africa. I tried to care about them. Saw several solutions to their problems. The solutions did not work because people weren't willing to leave their homes and culture behind. So if people put feelings above health and safety, then let Darwinism take its natural course.

2: Children are dying from just about everything other than cancer. Child cancer is actually pretty rare.

3: The scientists should be worried about solving the alternative energy problem, fusion, and cheap large scale desalination.
Quote:
Originally Posted by sumitlian View Post

Emotionally stupid comment in ^here.

You ought to, instead, tell that to those who approve $1 Trillion just to take care of a single type of fighter jet. Do you even have a slightest idea on what tiniest amount of money is spent on scientific research and space exploration as compared to unnecessary military equipments, Globally ?

Scientists should develop you people better sarcasm detectors, LMAO. Doesn't "Large Halcyon Coliseum" sound the least bit odd??

By the way it's rampant corruption the greater source and predecessor to those ills but whatever.
post #38 of 47
it's just like negative temperature

not really what you think it is.
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post #39 of 47
Quote:
Originally Posted by Zhany View Post

So if this is negative mass could this possibly imply negative energy? Aka the stuff that we need to make a lot of the FTL Hypothesis work? I.E. The Alcubierre Drive?

Actually you have a very valid point.

Instead of creating propulsion the normal way through combustion and thrust.
We can repel the matter underneath away from us and move in a forward lateral way. Sortof like an negative-gravity engine or something of the like.
post #40 of 47
Quote:
Originally Posted by Tjj226 Angel View Post

1: I couldn't care less about the children in africa. I tried to care about them. Saw several solutions to their problems. The solutions did not work because people weren't willing to leave their homes and culture behind. So if people put feelings above health and safety, then let Darwinism take its natural course.

2: Children are dying from just about everything other than cancer. Child cancer is actually pretty rare.

3: The scientists should be worried about solving the alternative energy problem, fusion, and cheap large scale desalination.

Not to mention the more humans we save as a species, = acceleration of deforestation and dead fishing zones (of which there are lots) some Malthusian theorists estimate a great famine is already going to occur within 30 years of cultures that rely heavily on fishing industry. (thankfully mother nature has a way of balancing herself out)

Humans are a virus, we consume everything in our path. It still blows my mind only 400 years ago the entire United States was still like 80% forest and now its like only 20% (just numbers pulling out of my butt, but I remember reading something like that in Time magazine).
    
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