Comments by "bj0rn" (@TheLivirus) on "The search for dark matter -- and what we've found so far | Risa Wechsler" video.

Care to be more specific about what qualifies gravity as the God of psuedoscience?
4
@DegreesOfThree I don't intend to reproduce the experiment. I'm just interested in what they did and how they arrived at their conclusions. Also, I can't see how the conclusions they did present contribute to improve predictions of movement of stellar objects past general relativity or even Newtonian gravity.
4
@simsational... The reason I'm asking is I suspect no evidence meets your criteria, so I'd waste my time telling you.
4
@DegreesOfThree Alright. Sounds like you're on to something. Are there any attempts to model galaxy rotation on the basis of electricity? If so, does it agree well with observations?
3
@DegreesOfThree The strong interaction holds atomic nuclei together by overpowering the repelling force between positively charged protons, yet some believe electric charge is the 'driving force'.
3
An educated guess: Orbital period is related to mass, so by observing how fast stellar objects rotate in a galaxy as a function of distance from its center, you may infer approximately how much mass is involved.
3
Also: gravitational lensing. Gravity bends light. So by measuring how strongly light bends around a gallaxy, its mass can be inferred. The lensing can be observed by comparing how the apparent positions of more distant objects are distorted as a massive object passes in front of them.
3
@simsational... What kind of evidence would you find convincing?
3
@simsational... I'm still waiting for you to make an argument against any specific claim. I'm starting to think you have nothing but edgy catchphrases to bring to the discussion.
3
@DegreesOfThree Driving force in what sense?
2
@DegreesOfThree Yeah, I'm looking for details about their methodology, observations, analysis, conclusions, etc. Are they sharing these? They draw conclusions but don't explain well how they arrived at them.
2
@simsational... There are many methods of measuring stellar distances, with more or less assumptions. What's your opinion of the parallax method?
2
@DegreesOfThree Good question. There are ways to measure attraction between small objects on earth. You can measure the mass of these objects independently by observing how they accelerate in response to other forces than gravity. With these tools you should be able to come up with an equation which relates attraction, mass and distance. Orbital period emerges from this equation.
2
@DegreesOfThree It means you can measure the gravitational constant without making assumptions about mass. Now you can measure the downwards pull on an object towards earth and infer its mass.
2
@DegreesOfThree You made me curious, so I read the Safire Project Report. Many nice photographs of plasma and some basic descriptions about the experiment. But I can't see how it relates to your claim that electricity somehow helps explaining the movement of stellar objects. Also, the report is just a brief summary. Is there some more in-depth publications available somewhere?
1