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re: The case against dark matter
Posted on 5/7/18 at 7:53 pm to DavidTheGnome
Posted on 5/7/18 at 7:53 pm to DavidTheGnome
My theory is that dark matter/dark energy is the remnants of matter/energy that has been sent through the event horizon of a blackhole in a different dimension and finds itself into our dimension/universe.
Can't understand it or see it because it's of a whole different dimension.
Can't understand it or see it because it's of a whole different dimension.
0
Posted on 5/7/18 at 7:57 pm to mofungoo
quote:
M Theory and Superstring theory contain explanations for dark matter and dark energy.
Ding ding ding
Posted on 5/7/18 at 8:02 pm to rmnldr
I don’t know if I’d use the word pull. That involves a proactive force reaching out from mass, and as far as we know that’s not the case. Gravity doesnt work like a tractor beam.
Who knows though, if what the guy is saying in the OP turns out to be true that’s a radical departure from current understanding. I can’t wait for the next breakthrough to upend everything, that always opens lots of interesting doors.
Who knows though, if what the guy is saying in the OP turns out to be true that’s a radical departure from current understanding. I can’t wait for the next breakthrough to upend everything, that always opens lots of interesting doors.
This post was edited on 5/7/18 at 8:12 pm
Posted on 5/7/18 at 8:12 pm to DavidTheGnome
I obviously don’t think Einstein was completely off his rocker or anything. I’m just saying that general relativity and the equivalence between energy and mass are incomplete and we all know that what we observe doesn’t work into that perfectly.
That’s where quantum mechanics and quantum gravitational theory comes in and, like you said, the bridge between the two must be built. That’s where I think we’re heading.
ETA: I like how I agree with you and your OP and still get downvoted
That’s where quantum mechanics and quantum gravitational theory comes in and, like you said, the bridge between the two must be built. That’s where I think we’re heading.
ETA: I like how I agree with you and your OP and still get downvoted
This post was edited on 5/7/18 at 8:28 pm
Posted on 5/7/18 at 8:33 pm to DavidTheGnome
Gravity is not a force. Rather, it's an effect of the influence of mass upon spacetime.
If you've studied fields then you know that there's a Higgs Field. There's also a spacetime field. The Higgs boson (and other bosons yet to be discovered) assigns mass to particles as they travel through the Higgs Field and, of course, the spacetime field.
Particles with mass exert an effect of "warping" or "bending" on spacetime. I put those words in quotes because they only approximate the effect we call gravity. The more massive the particle, the stronger the effect. When masses join, they exert a cumulative gravitational effect.
Although it seems counter-intuitive, the gravitational effect is truly not attractive. The real effect is more one of masses being pushed together by spacetime.
If you've studied fields then you know that there's a Higgs Field. There's also a spacetime field. The Higgs boson (and other bosons yet to be discovered) assigns mass to particles as they travel through the Higgs Field and, of course, the spacetime field.
Particles with mass exert an effect of "warping" or "bending" on spacetime. I put those words in quotes because they only approximate the effect we call gravity. The more massive the particle, the stronger the effect. When masses join, they exert a cumulative gravitational effect.
Although it seems counter-intuitive, the gravitational effect is truly not attractive. The real effect is more one of masses being pushed together by spacetime.
Posted on 5/7/18 at 8:42 pm to Kentucker
Agreed.
What’s your opinion on dark matter though, undiscovered particle or flaw in our current models. They use the gravitational lensing effects of dark matter (assumedly) to map it which suggests an actual thing with mass but like the gravitational constant it just seems to be a tack on idea to make our models work to be and in the end the real solution is a lot more elegant.
What’s your opinion on dark matter though, undiscovered particle or flaw in our current models. They use the gravitational lensing effects of dark matter (assumedly) to map it which suggests an actual thing with mass but like the gravitational constant it just seems to be a tack on idea to make our models work to be and in the end the real solution is a lot more elegant.
Posted on 5/7/18 at 8:44 pm to DavidTheGnome
quote:
Gravity doesn’t "pull" though, it makes objects "fall" towards each other.
What?
Posted on 5/7/18 at 8:46 pm to rmnldr
quote:
That’s where quantum mechanics and quantum gravitational theory comes in and, like you said, the bridge between the two must be built.
The bridge is String Theory. It seems solid and has withstood every challenge to date. The only reason it isn't universally proclaimed is because there doesn't yet appear to be a way of empirically observing strings or even their effects.
Posted on 5/7/18 at 8:53 pm to rmnldr
I didn’t downvote you 
eta just added an upvote to prove
eta just added an upvote to prove
This post was edited on 5/7/18 at 8:55 pm
Posted on 5/7/18 at 9:00 pm to DavidTheGnome
quote:
What’s your opinion on dark matter though, undiscovered particle or flaw in our current models.
Because dark matter is behaving like ordinary matter, regarding the gravitational effect at least, there's no reason to think it isn't a form of matter that we just can't detect yet. Hell, some forms of ordinary matter, such as neutrinos, are practically undetectable as well.
quote:
They use the gravitational lensing effects of dark matter (assumedly) to map it which suggests an actual thing with mass but like the gravitational constant it just seems to be a tack on idea to make our models work to be and in the end the real solution is a lot more elegant.
The most elegant solutions in nature are always the simplest, I think. Vera Rubin discovered dark matter when she showed conclusively that the behavior of stars in galaxies required the presence of far more matter than was detectable.
The gravitational lensing of far away galaxies via undetectable matter between here and there is also conclusive. Both of these indirect observations of dark matter are easily understandable because of their simplicity. Dark matter is behaving a lot like ordinary matter. We just can't detect it. Yet.
Posted on 5/7/18 at 9:08 pm to Kentucker
It’s just the aether, bro.
Posted on 5/7/18 at 9:09 pm to DavidTheGnome
Al-Khalili is my favorite "public educator" for science. His current thrust regards quantum biology. He's becming a leader in that new field.
Posted on 5/7/18 at 9:09 pm to Kentucker
quote:
We just can't detect it. Yet.
Like WIMPs?
Posted on 5/7/18 at 9:11 pm to Bullfrog
quote:
It’s just the aether, bro.
In a way, it is. Spacetime can be considered to be the aether of old science. It's a physical presence everywhere. Absolutely everywhere in our Universe.
Posted on 5/7/18 at 9:14 pm to rmnldr
quote:
Like WIMPs?
Maybe, sure. Weakly Interacting Massive Particles, WIMPs, are only theoretical at this point but they sure explain a lot about gravity.
Posted on 5/7/18 at 9:18 pm to Kentucker
quote:
Spacetime
Since you seem to understand this well. Can you explain how we're currently defining this?
Posted on 5/7/18 at 9:23 pm to rmnldr
quote:
Can you explain how we're currently defining this?
Well, Einstein said space and time were the same thing with his Theory of General Relativity. The easiest way to understand spacetime for me is to think of space as the agent of change in the Universe and time as its measurement, or pace.
Posted on 5/7/18 at 9:25 pm to DavidTheGnome
You know what else bends space time?
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