Talk:List of unsolved problems in physics

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Science
Unsolved problems in : Note: Use the unsolved tag: {{unsolved|F|X}}, where "F" is any field in the sciences: and "X" is a concise "explanation" with or without links. The appropriate category tag will automatically be added.

Indirect Detection of Gravitational Waves[edit]

I have deleted the entry claiming that gravitational waves have been directly detected for the first time, as this is untrue. BICEP2 did not directly detect gravitational waves; it measured their influence on CMB polarization. The only prospect of a direct detection of gravitational waves is through interferometric methods, e.g. LIGO. Journalists this week are really skewering the science, but The Guardian gets it more right than "I Fucking Love Science", which is what was referenced for that claim. See: http://www.theguardian.com/science/2014/mar/23/primordial-gravitational-waves-tantalising-cosmic-birth-big-bang— Preceding unsigned comment added by 2607:f470:24:2:cc05:415f:b4d7:8728 (talk) 03:33, 23 March 2014

Dwarf galaxy problem[edit]

Should it be included? Paradoctor (talk) 23:10, 26 July 2014 (UTC)

The dwarf galaxy problem is really one particular problem with some versions of Cold Dark Matter theory, rather than a problem related to dwarf galaxies per se.Ohwilleke (talk) 02:10, 29 August 2014 (UTC)

Planar Galactic spheroid[edit]

See this edit. I think think this merits inclusion as soon as the relevant content is in shape. Paradoctor (talk) 23:25, 26 July 2014 (UTC)

Remove quasars from the Solved list?[edit]

The article says that quasars are now generally understood. Yes, the current view is that they are galactic cores where the enormous energy output results from matter falling into a massive black hole in the center of the galaxy. However, observations show that they can vary their light output daily, suggesting a quasar diameter constrained by a light-day's distance, and that would limit their radius to just more than four times the distance of the Sun to Pluto, far to miniscule to represent a galactic core. Perhaps healthy scientific skepticism would keep quasars, for now, off the Solved list. Thoughts? Bob Enyart, Denver KGOV radio host (talk) 18:46, 28 November 2014 (UTC) Bob Enyart, Denver KGOV radio host (talk) 02:38, 23 February 2015 (UTC)

Typo in dimensionless constants[edit]

Is this a typo: What is the minimum number of dimensionless physical constants from which all other dimensionless physical constants can be derived? Shouldn't that be minimum number of dimensionfull physical constants? Erwin (talk) 20:38, 6 July 2015 (UTC)

The word you mean is "dimensionful" (one "L"). But I think it should say "dimensionless". I would think there are other dimensionless physical constants that can be derived from the minimum set and then from the set of all dimensionless physical constants all the dimensionful constants are derived, although the question leaves that part out. Richard-of-Earth (talk) 07:39, 7 July 2015 (UTC)