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by Watsisname
07 Dec 2019 00:38
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy News
Replies: 737
Views: 112548

Science and Astronomy News

A-L-E-X wrote:
Qr Bbpost Wat, out of these possibilities, which would you rank as having the highest probability of being true


I'm an observational cosmologist, not a theorist.  :)
by Watsisname
06 Dec 2019 13:48
Forum: Off-topic Discussions
Topic: Totally off-topic thread
Replies: 1003
Views: 178785

Totally off-topic thread

32286 When I saw some of the tainting being done in some industries to skew the numbers, thats what got me down on statistics. Your comment and story reminds of people who dislike or even reject evolutionary theory because of atrocities with eugenics.  But evolution is not inherently good or bad, i...
by Watsisname
06 Dec 2019 07:26
Forum: Off-topic Discussions
Topic: Totally off-topic thread
Replies: 1003
Views: 178785

Totally off-topic thread

32259 Scientists use statistics all the time to back up their research, yet few have any academic background in statistics to speak of.  This may be a serious problem (I have to say "may be", as I never did statistics at university myself and I regret it, so I can't really back up that cl...
by Watsisname
06 Dec 2019 04:32
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy Videos
Replies: 457
Views: 75553

Science and Astronomy Videos

AWYvmBVpU8M Abstract:   The region around the Galactic Center contains a well-characterized excess of gamma rays, which has garnered great interest as a possible signal of either dark matter particles colliding and annihilating, or a previously undiscovered population of pulsars in the stellar bulg...
by Watsisname
04 Dec 2019 17:47
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy News
Replies: 737
Views: 112548

Science and Astronomy News

32256 So "good" ways to render energy pretty useless would be to turn it into gravitational waves or neutrinos. Definitely.  I think this is roughly equivalent to saying that radiating energy in these forms is a good way to increase the entropy of the universe.  Probably the best  way to ...
by Watsisname
04 Dec 2019 00:46
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy News
Replies: 737
Views: 112548

Science and Astronomy News

32247 Indeed, yet it takes an extremely sensitive instrument to detect it!  How much energy could be "hidden" in frequencies we can't realistically measure?  Less than than 1eV/cm 3 , or in perhaps more familiar units, less than 10 -13  Joules per cubic meter, on average in the universe. ...
by Watsisname
03 Dec 2019 13:22
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy News
Replies: 737
Views: 112548

Science and Astronomy News

A-L-E-X , it's no secret or surprise that black hole mergers release a lot of energy in gravitational waves.  Detailed simulations of mergers and the gravitational waves they emit have been performed for about a decade, largely so that scientists can interpret the results of LIGO detections and tes...
by Watsisname
03 Dec 2019 11:41
Forum: Off-topic Discussions
Topic: Totally off-topic thread
Replies: 1003
Views: 178785

Totally off-topic thread

32221 Who cares if casusation can be proved or not I do.  And so should you. Any scientist who says what you just did has ceased to be a scientist.  "Correlation = causation" is one of the most pervasive fallacies in science and human psychology, and it is absolutely important to understa...
by Watsisname
03 Dec 2019 00:11
Forum: Off-topic Discussions
Topic: Totally off-topic thread
Replies: 1003
Views: 178785

Totally off-topic thread

32205 And they just happen to cause autism out of all the thousands(?) of mental illnesses. This is a point that deserves further emphasis.  One of the papers Alex linked showed a correlation between number of superfund sites in a state and the frequency of autism cases, with a correlation coeffici...
by Watsisname
02 Dec 2019 23:51
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy News
Replies: 737
Views: 112548

Science and Astronomy News

A-L-E-X wrote:
Qr Bbpost I read that some computer simulations hint that the merger of two supermassive black holes may provide the impetus to generate a new universe (because it would have two horizons, and the new universe would be inside that second horizon.)

Where did you read that?
by Watsisname
27 Nov 2019 14:32
Forum: Off-topic Discussions
Topic: Show off your work
Replies: 403
Views: 89631

Show off your work

A cat,
Image

and a fractal,
Image

blended by an artificial intelligence:
Image
by Watsisname
24 Nov 2019 15:14
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy Questions
Replies: 1635
Views: 235201

Science and Astronomy Questions

32107 I know it's just shifting the problem but it's quite possible that overall the amount of matter and antimatter universes is similar or even nearly equal and we just happen to live in a matter universe. The problem is that pair production must produce a lot of both matter and antimatter in thi...
by Watsisname
24 Nov 2019 07:45
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy Questions
Replies: 1635
Views: 235201

Science and Astronomy Questions

32098 But what I believe to have been understood is that Hawking radiation has not been proven yet, no one really knows what it is and that it's just a mathematical construct to preserve the entropy! Energy is also just a mathematical construct so that we can write formulas and describe physical pr...
by Watsisname
24 Nov 2019 05:54
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy Questions
Replies: 1635
Views: 235201

Science and Astronomy Questions

32089 Assuming that the Big Bang produced exactly equal amounts of matter and anti-matter, could the creation of anti-matter black holes be what shifted the balance and prevented everything from just annihilate into pure energy? Interesting idea.  Unfortunately I don't think this would solve the pr...
by Watsisname
24 Nov 2019 04:05
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy Questions
Replies: 1635
Views: 235201

Science and Astronomy Questions

32092 Then I probably always misunderstood the Hawking radiation.   I have always thought that this is caused by virtual particles that emerge outside the black hole. Join the club!  There are a lot of confusing things about black holes, but the mechanism behind Hawking radiation might be one of th...