Started by Unbeliever, July 08, 2019, 02:29:34 PM
Quote from: Unbeliever on July 09, 2019, 01:22:26 PMCould the 10 second difference in neutron decay have anything to do with the difference in motion of the respective cases? It seems like someone would've ruled that out already though, so I guess not.
Quote from: Sal1981 on July 09, 2019, 10:56:43 AMWell, that conclusion seems flawed.I'm probably talking out my ass, but if you looked at a million different clocks, and they all started at the same time at midnight, and you only waited for 11 hours, and somehow, expected some of them to strike at noon, you wouldn't see any of them strike at noon.
Quote from: Hydra009 on July 09, 2019, 02:47:52 PMCorrect me if I'm wrong, but radioactive decacy is probabilistic - a gram of a substance with a half life of one second means that on average, half of it has decayed into something else in a second - individual atoms might decay faster or slower than one second. So you wouldn't necessarily have to watch the full second.
Quote from: trdsf on July 15, 2019, 06:02:51 AMAbout all you can say regarding parallel universes is that they're not impossibleâ€"although I think they're quite a bit less impossible than a god existing.It was put forward that one of the cold spots on the Cosmic Microwave Background could have been caused by a collision with a neighboring universe, but that remains only a proposal, it's nowhere near the theory stage. It's just a way to try to explain a cold spot on the CMB that doesn't have an intergalactic void associated with it, and current cosmological theories state such a cold spot has a 1 to 2% chance of occurring naturally. Hardly lottery odds, that, and a much simpler explanation than having to reach for the universe next door.Still, I don't see the harm in looking. You never know what might turn up along the way. Remember that the teams that uncovered the accelerating expansion of the universe were actually looking to measure the rate at which it was decelerating.
Quote from: trdsf on July 15, 2019, 06:02:51 AMStill, I don't see the harm in looking. You never know what might turn up along the way. Remember that the teams that uncovered the accelerating expansion of the universe were actually looking to measure the rate at which it was decelerating.
Quote from: josephpalazzo on July 15, 2019, 11:32:03 AMThere would be no harm done except some of these people are now trying to change the very definition of what is a scientific theory. Unknown to the public there is a deep riff between those who want to consider such things as multiverse, parallel universe, etc. as valuable fields of research and those who see the futility. So much so there is an attempt to revise the traditional concept of what is science. The danger is that we might end up in the obfuscation that prevailed the Medieval Age. https://platofootnote.wordpress.com/2018/01/22/peter-woit-vs-sean-carroll-string-theory-the-multiverse-and-popperazism/
Quote from: Unbeliever on July 15, 2019, 01:20:17 PMYeah, there are no laws of physics, there are only suggestions of physics. :-P
Quote from: josephpalazzo on July 15, 2019, 02:44:02 PMThere's a lot of misconception about the meaning of the word "law" in physics - plainly speaking, it's just a description of what is observed. If you have an aversion to facts, then "law" is just a suggestion or an opinion. The dude in the oval office is a good companion to our permanent troll.
Quote from: Hydra009 on July 15, 2019, 11:34:39 PMThat's been bothering me for a long time now. From the way people talk about them, you'd think they were divine edicts or governmental laws, as if the speed of light was enforced by some photonic traffic cop. Utter nonsense brought about by the inability to conceptualize the same word having two wholly different meanings.Physical laws are descriptive, not prescriptive. They just tell us about how things usually behave and interact. Laws are useful in that they inform us that some phenomena have predictable results - by anticipating what will happen (and what will not) we can make useful predictions (and reverse it to figure out what did happen in the past). Refining these generalizations to greater and greater precision is the true virtue of science - slowly but surely bringing to humanity a rigorous awareness of what exactly is going on around us and allowing humanity the potential to act rather than just be acted upon.It's disgusting that this wonder of hard-fought knowledge is conflated with things that are either comparatively banal or utterly ridiculous.