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  • Consistent Histories interpretation of quantum mechanics?

    So I just recently heard about this interpretation of quantum mechanics. The Wikipedia article is poorly written, so it's of no help. So my understanding of it seems to be that it describes particles that can take many paths, but all of its paths end up in the same place at the end once it's measured. So somewhat like the Many Worlds Interpretation, but instead of it resulting in multiple universes, it results in all multiverses converging into one universe again. Does that sound about right for this interpretation?

    Physics6 days ago
  • Who is Jake Paul (Youtube)?

    So this guy has been trending on Twitter today, apparently the FBI is searching his house for something. I've never heard of his Youtube channel before, even though apparently he's pretty popular, so what was his channel about?

    2 AnswersYouTube7 days ago
  • Was Superstring Theory doomed all along?

    So SST postulated that we replace point particles with string particles. Around the same time, the world of experimental physics was converging on the idea of Quantum Field Theory (QFT), which was the theory that was starting to come to the conclusion that particles don't actually exist, that they are just more constricted waves. QFT was less theoretically ambitious than SST, but more experimentally supported. It would seem that QFT was quietly converging on the right answer, but SST was going the exact opposite way, and turning particles into the main focus, and turning waves into an afterthought. When the experiments are saying one thing, and your theory is saying another, shouldn't the experimental theory win out? It seems that was a major problem with SST.

    1 AnswerPhysics7 days ago
  • What was the name of that video streaming service that went out of business a few years ago?

    I think about 5 years ago, there was this video streaming service that had 7 second videos that repeated on a loop. It had a lot of hype back then, but in the end it didn't generate a lot of actual interest. I just can't remember the name of that service. Anybody?

    2 AnswersOther - Internet1 week ago
  • Mai Tai mix?

    What do you usually mix with Mai Tai mix?

    3 AnswersBeer, Wine & Spirits4 weeks ago
  • Anybody know what happened to the Space Travel Calculator?

    This webpage was used to calculate how close to the speed of light you needed to get to get anywhere in the universe within the span of a single human lifespan. It used to be at this link, but it's gone now. Is there an alternative or mirrored copy of the calculator?

    http://nathangeffen.webfactional.com/spacetravel/s...

    2 AnswersAstronomy & Space1 month ago
  • Facebook, inviting someone to a group?

    I was trying to invite one of my general FB friends to a private FB group which I'm a part of. Now, for some reason, while trying to invite him, his name was not showing up, as someone I could invite. Instead, I had to get him to request to join the group, and that's how he got it. BTW, I'm the administrator of the group, so I was the one who approved him to come in. But it's weird that I wasn't allowed to invite him to my own group?

    2 AnswersFacebook2 months ago
  • How do you pronounce this Spanish name?

    Any Spanish speakers care to teach me how to pronounce this name, which I believe is Spanish: Loaiza?

    2 AnswersLanguages2 months ago
  • Is there any difference in accuracy between digital or analog quartz watches?

    Quartz watches are said to be on average accurate to about 15 seconds/month, but they don't mention whether that's for digital or analog quartz watches. Is there a difference?

    4 AnswersEngineering2 months ago
  • How is orbital precession calculated in Newtonian gravity?

    So one of the big test successes of General Relativity over Newtonian gravity was the precession of Mercury's orbit. Mercury's orbit precesses 5600 arcseconds/century, but Newton's laws only accounted for 5557 arcseconds, and Relativity came up with the remaining 43 arcseconds. But where do you find precession from the Newtonian formula F = GMm/r^2?

    3 AnswersAstronomy & Space2 months ago
  • Does it matter to you that statues of Christopher Columbus were torn down in several American cities?

    If your answer is that he's part of American history, then why is he part of it? Columbus never stepped foot in any land that is now part of the USA. Why are there statues of him, when America was named after another explorer Amerigo Vespucci? I don't think Columbia has as many statues of Columbus as America does. Also, not even counting the fact that there were people living in this continent for tens of thousands of years previously: if you think because he was the first European to discover this continent, then the Vikings landed here 500 years before him, and they actually made it to lands that are now part of the USA.

    4 AnswersPolitics2 months ago
  • Spam from Google Hangouts?

    Over the past couple of weeks, I've been getting daily notifications from Google Hangouts to connect with users there. All of the users are complete spam, not real. I don't know why I'm getting these notifications now, I don't think I ever joined Hangouts, unless it comes automatically with other Google services? Is there a way to unjoin Hangouts?

    Google2 months ago
  • Why birds and not dinosaurs?

    So one of the main theories about why birds survived the mass extinction, but not dinosaurs is because the birds were smaller. But does that really make any sense? There were numerous small species of dinosaurs around, and numerous large bird species around before the asteroid impact. If size were the limiting factor, then wouldn't some toothed dinosaurs have made it through to present? Is it more truthful to say beaks vs. teeth were the true filter for the extinction? And if so, why would beaks allow them to survive an asteroid impact?

    10 AnswersZoology2 months ago
  • Calculating Kerr black hole dimensions?

    Follow-up to this previous question:

    https://ca.answers.yahoo.com/question/index?qid=20...

    Without having to go through all of the calculus, is there an equation (simple algebraic) to calculate the maximum and minimum oblate event horizon sizes of Kerr black holes. Same with its ergosphere.

    Astronomy & Space3 months ago
  • Spinning Kerr black hole shape?

    Okay, can somebody explain if a Kerr black hole has an oblate event horizon, or does it have a spherical event horizon and an oblate ergosphere?

    3 AnswersAstronomy & Space3 months ago
  • Why did life choose calcium?

    Are there any theories about why life ended up choosing calcium as the non-organic mineral from which its skeletons are built from? As far as skeletons go, wouldn't choosing metals like iron, aluminum, etc. have been a stronger choice?

    3 AnswersBiology3 months ago
  • Does anybody remember the name of that video website for shortform videos that went out of business?

    A few years ago, there was this video website that was designed for super-short-form videos, like about 10 seconds or less. And they kept repeating after you got to the end. I generated a lot of buzz for years, but it didn't seem be able to break-through fast enough, so it went out of business. For the life of me I can't remember it's name, but it's likely on the tip of my tongue.

    Other - Internet3 months ago
  • Why not re-evolve gills?

    So we've seen many land animals over the course of millions of years re-evolve back into the seas, from extinct Ichthyosaurs, to extant Blue Whales. They've all re-evolved water dwalling bodies, from streamlined shapes to fins and tails designed only for motion in the water. But none of these animals have ever re-evolved gills so that they can breathe underwater without needing to surface. Everything else comes back, except the very important method of breathing in water??? In fact, we're even seeing some fish lose their gills and develop lungs too, while still living in the water! Why are gills such one-off evolutions that everything evolves away from, and can't evolve back to?

    7 AnswersBiology3 months ago