Jump to content


Popular Content

Showing content with the highest reputation since 11/05/19 in all areas

  1. 3 points
    I bet those who support the president wish it was functionally different from what actually occurred. But alas... they’re so convinced it was a perfect call where this poor righteous saintly president of ours merely wanted to end corruption in the world that they probably don’t care. It’s called an analogy, JCM, and you’re attacking it for its lack of perfection.
  2. 3 points
    I can't see anything wrong with the quoted comments. ! Moderator Note As the only purpose of the thread seems to be to ridicule a member of another forum, the thread is closed. If you want to start a thread to discuss the relationship of mass and energy, then feel free to do so. But don't use it as an excuse to insult members of this or any other forum.
  3. 2 points
    In various threads we have (albeit briefly) touched on the fact that resistant bacteria are starting to overwhelm our ability to treat them. Now the CDC has issued a new antibiotic resistance threat report, Basically every 4 hours a new resistant strain is detected and about 35k people die every year due to resistant strains. Countermeasures that have started since the last report came out (2013) were less effective than hoped. Among the biggest threats currently are resistant Acinetobacter, Candida auris, Clostridioides difficile (formerly Clostridium), carbapenem resistant Enterobacteriaceae, and resistant Neisseria gonorrhoeae. There are a lot of issues that have to solved outside the clinical environment, such as reducing or stopping the massive use of antibiotics in agriculture. There, antibiotics are routinely used to fatten animals which results in massive amounts of antibiotics released into the environment and enter the human food chain. Another aspects are procedures in health care (including elderly care) which are often not up to par to limit microbe spread. The challenge is that a single failure can lead to spread through the health care services. There are folks still hoping that we will find an alternative treatment that will be as useful as antibiotics (which we messed up badly) but so far not alternative golden bullet is really in sight (yes there are some developments which can be useful but for the most part they have potential and/or have not shown to be effective in vivo). As a result, it seems that we are indeed moving straight toward the projected post-antibiotic era. Personally (and of course biased by my own research), I think we need to accelerate our understanding of bacterial physiology in order to develop effective countermeasures from the bottom up, as in most cases we only have a very rough understanding how antimicrobial substances actually kill bacteria (which to some extent is also true for antifungals and fungi).
  4. 1 point
    This is the first time I have come across this explanation set out in this way. https://www.forbes.com/sites/startswithabang/2019/12/04/this-is-why-scientists-will-never-exactly-solve-general-relativity/#7b33b37734a8 It was not a surprise to me as the intimations have been there in the background up to now... The gist seems to be that, (so far) one can learn all there is to know about the mathematics of GR but its precise application (even a two body problem) is ,not even tantalizingly completely out of bounds. Does it seem a good article to any one else?
  5. 1 point
    The question comes down to this: Should we ban X because X may lead to damage to the person who chooses to do X? As long as the individual who chooses X is the one who faces the risk, then a free society has no moral right to ban X.
  6. 1 point
    As long as the fighters are aware of the risks and the referees and trainers primary focus is ensuring the safety of the boxers i don't see a problem.
  7. 1 point
    I do a stool sample every year. It's free in the UK after a certain age. There's nothing in the instructions on our kits about food restrictions, it must be a different process. It does say that finding blood can be from a range of different causes, so it's not the time to panic, but obviously it wouldn't be wise to skip the colonoscopy. My next door neighbour actually got colon cancer a few years ago, he's only about fifty. He was successfully treated and has had no subsequent problems at all. But anyway, hope your results are good.
  8. 1 point
    Nor have I but I agree with your comment. Also +1 both for discussing the title question accurately. My comment is about the meaning attributed to the prefix 'meta', which does not signify 'beyond' but something a bit less distinct. For example 'metastable equilibrium'. So meta-metaphysics means something that is similar to metaphysics, but not quite the same in some way. So I call upon @Devries to clarify please.
  9. 1 point
    ! Moderator Note General warning: Don't let this thread bring out the worst in you. One of our main rules is politeness.
  10. 1 point
    ! Moderator Note Yes, because scientists will be doing science when this happens. You aren’t coming close. Don’t bring this up again. Or anything, if it’s as lacking in rigor as much as this is.
  11. 1 point
    You cannot know that. The only reference you have to compare your memory to is your memory. With no objective evidence (photos, doctors reports, etc) there is no way you, or anyone else can know if your memory is accurate or not. By definition, the impossible is not possible. I don't know what you are looking for here. Your claim that a dream caused your injuries is clearly not the case. Therefore it must have been a physical object. If you are not going to accept reasonable responses, then this discussion is pointless. (It also appears to be off topic, as you are not providing any useful information about the subject of the thread.) But infinitely more likely than the impossible.
  12. 1 point
    You don't know that. You just think that. I happen to have a vivid memory of the Easter Bunny in my backyard. I can even describe what he was wearing. This is a waste of time if you think "the impossible" is "possible". That is not reasonable and you should know that.
  13. 1 point
    Top dark matter candidate loses ground to tiniest competitor. The ADMX experiment at the University of Washington uses a strong magnetic field to search for hypothetical dark matter particles called axions. https://www.quantamagazine.org/why-dark-matter-might-be-axions-20191127/?utm_source=quora&utm_medium=referral ADMX’s main magnet produces a field that’s about 150,000 times stronger than Earth’s.
  14. 1 point
    Mass x velocity. p=mv (nonrelativistic formula) You need to know both. Talking about the momentum in an orbital is usually nonsensical. The whole atom has momentum, but you can't really assign a value to individual particles. They do not follow a classical trajectory. The energy used to create the photon is the energy difference between the electron states. That tells you its energy. There not used to make the photon (i.e. there's no waste involved). The only other energy would be the atomic recoil, and that's tiny for one photon — visible-energy photons cause a recoil of order 1 cm/s. The actual value depends on the exact energy and the atom's mass. (But scatter a few thousand photons and the effects are definitely noticeable)
  15. 1 point
    That is irrelevant. There is only one theory under discussion: quantum mechanics. There are multiple interpretations (descriptions that appeal to human intuition). You prefer one, other people prefer another. There is no other reason to choose between them.
  16. 1 point
    Perhaps the deepest mystery in physics is "what is time" And while we, as far as I understand, have concepts of time in both space-time and thermodynamics, Perhaps the reason it is so, is that pseudoscience and philosophy can never unravel this question, because their cultures and internal disciplines too readily turn their back on real measurement and theoretical modelling, where the answer is, resulting in too many people on our planet drowning and floundering in a quagmire of wild ideas, speculation and posts with many substantial claims and 0 evidence or references given. I really like this quote: "The conquest of nature is to be achieved through number and measure." Math is, for whatever reason reality follows these rules, the tool with which science attempts to explain reality. It is so far the most successful method,. That doesn't mean philosophy has no value (as I can see that my post may insinuate that), but that its value is not as great in the quantitative sciences as true understanding of mathematical models is. -Dagl
  17. 1 point
    The changes made to the MAX to accommodate the more economical higher bypass engines, necessitated different engine-to-wing mounts ( because of their larger diameter ), placing them higher and farther forward. The altered CoG/ CoL characteristics made the plane very slightly unstable in pitch, such that excessive nose-up angle would diverge and stall the wing. Now this is nothing new, just about every military fighter plane since the 80s has been unstable in pitch as it makes them extremely maneuverable. But since all new planes ( even airliners ) are fly-by-wire, it is easy enough for computer software to control a humanly unflyable plane. The computer software does the job that a human would not be able to do. A Eurofighter Typhoon is so unstable, trying to fly it manually has been described as "sitting on the hood of a car doing 100 mph, holding a bike backwards, by the handlebars, and trying to keep it going straight". The 737 MAX is nowhere close to this and is easily controlled by the pilot. But since this is a commercial airliner and extra precautions have to be built in, to control the pitch-up moment on the 737 MAX, Boeing added MCAS ( Maneuvering Characteristics Augmentation System ), which receives information from two Angle-of-Attack ( attitude ) sensors, and if they deviate too far in pitch, the MCAS software forces the nose down. The problem in the two crashes ( shortly after take off, with nose high pitch ) was that one of the two sensors wasn't working and with no pilot notification, the MCAS could not be over-ridden by pilot control, and it re-applied continuously, eventually crashing the plane into the ground. The 'fix', all in software, is to compare the two attitude sensors and if one isn't working notify the pilot. Make the input from MCAS weak enough so that it can easily be overridden by the pilot. And apply MCAS control only once, as that should be enough to get the pilots attention to a possible problem. The Boeing 737 MAX series are good planes, and maybe suffered from Boeing trying to make them idiot proof by putting too many roadblocks on the pilot flying the plane. I understand Boeing is considering re-naming them to get rid of stigma associated with the plane ( as demonstrated by Mistermack ), but I'm not sure if it'll work. They may have to introduce a replacement for it.
  18. 1 point
    This is an older thread, but the topic is current and this seems to fit. A surprisingly great speech from an even more surprising source. Well worth the 20 minutes to watch if you’re at all interested in how the world at large is being twisted by people with malarious intent. A summary is also available here: https://techcrunch.com/2019/11/22/watch-sacha-baron-cohen-skewer-zuckerbergs-twisted-logic-on-hate-speech-and-fakes/
  19. 1 point
    A man named Rupert Sheldrake had a bunch of ideas for testing these things. He's written many books about what he calls "morphic fields," and one of those books was about experiments (another was called the "Sense of Being Stared at" and "Dogs who know when their owners are coming home"). Ghideon's idea is a good one. There are others. We can't help you find participants. If you can't even figure that part out, then you're sort of screwed. If, however, you manage to figure out the basic social skill of getting help from others, you could try these tests proposed by Sheldrake: https://www.sheldrake.org/participate Note: No good evidence has been found after decades of trying. It's led to some good comedy, though:
  20. 1 point
    I have an engineer friend who used to work in Saudi Arabia. He says that at certain times over there, condensation would be streaming off the metal roofs of the modern industrial buildings and running down the downpipes from the gutters as if it was raining. I doubt if it would last for long though. The condensation would be bound to warm the metal up past the dew point very rapidly. You would need a combination of very clear skies, and high humidity, to maximise the yield. I'm sure it's been tried over there. If he noticed it, lots of other people would too. I prefer the transpiration bag idea. So long as there are some non-poisonous bushes within range, you can get a lot of water using a few plastic bags, and the local bushes. They suck up the water from below, and deliver it at no cost, other than the effort of collecting it and resetting the bag.
  21. 1 point
    Then why are you using the internet?
  22. 1 point
    What experiments are you talking about? And if you don't know, how do you know you can "prove" it? You should forget about "proof", and concentrate on how you can provide evidence of your claims. The more evidence to support it, the more persuasive your argument will be. Define EXACTLY what you mean by "I can do telepathic ability". Define what you mean by "send messages directly mind to mind". The most important thing at this stage is for you to decide what would show your claims to be FALSE. What test failed, or what message not sent would show that you CAN'T do telepathic ability? Your claims need to be capable of falsification before we can take them seriously. Once you can do that, then you should be able to take any standard test for ESP, using validated methodology. They'll be looking for results that go beyond statistical anomaly. Or if your definitions are different, perhaps then someone could suggest a way to test them. Based solely on your OP, I would expect you to be able to send a random phrase as a private message to one of our staff members, then send the same phrase directly to my mind with your telepathic ability. When the staff member and I confer, I should be able to tell them, "Blue peninsula hopping trousers twisted badly", and they should be amazed that I said the exact same phrase as you. That's when everyone here suddenly becomes very interested in your thread. Got anything like that?
  23. 1 point
    What are you trying to do here? Equation 1 is an unusual way of writing the standard equation of a circle x2 + y2 = r2 (note you don't need LaTex to write this, just use the sub and super script icons on the text input editor, labelled x2 and x2) your way puts you into immediate trouble since if D is the diameter D = 2r so equation 2 becomes [math]\frac{C}{2} = \sqrt {{r^2} - {{\left( {2r} \right)}^2}} = \sqrt { - 3{r^2}} [/math] So you are trying for the square root of a negative number. Furthermore if C is the length of the circumference, you can't just replace y with half of it.
  24. 1 point
    That is not the equation for the circumference of a circle. That will give you the y coordinates for the (two) points on a circle (with radius r) corresponding to the given x value. You could, perhaps, integrate over a range of x values to get the circumference but it seems unnecessarily complicated because: C = 2 pi r
  25. 1 point
    Are you familiar with the Gish Gallop? Please, focus on the things that matter instead of introducing a bunch of bullshit irrelevant to the discussion taking place.
  26. 1 point
    This has nothing to do with the discussion yet always lands at the end. There's a thread about that topic where you've abundantly posted yet brought it over here again and again. where you'll incessantly perpetuate the fallacy that the Dems are by default worse than the criminal running the place now. Anything but the substance is what we expect from American Republicans in this matter. Yet when Canadians repeat that nonsense ad nauseam, it's obvious we're already down the tubes and it's the conservatives instilling it. Conservatives would do well to clean up their own house before admonishing others. That's what's wrong with this continent.
  27. 1 point
    The way things are going towards cars broadcasting data, you might not need to rely on motion detection.
  28. 1 point
    This looks so good! I am currently building a grill, this looks like a good debu cook!
  29. 1 point
  30. 1 point
    It probably won't get through the Senate. The important conditional seems to be whether the hearings will help or hurt Trump's popularity.
  31. 1 point
    It is not really that the sun is too small. There is, in principle, a Schwarzschild radius for any mass. The problem is that there is no mechanism to make the sun turn into a black hole. A black hole with the mass of the sun would have a radius of about 3km. [Edit: sorry, I see you have already worked this out.]
  32. 1 point
    Constant means the same in one reference frame. Invariant means the same in all reference frames. Energy, for example, is conserved — pick a frame and the value will not change. But it is not invariant — it can have a different value in another frame. (KE being an obvious example of this) The rule that energy is conserved is the same, even though the value doesn't have to be. Constancy/conservation does not imply invariance.
  33. 1 point
    Here is the theory you require. Make sure you get you friction force acting in the correct direction (your dashed one in this case) Also the normal reaction (again dashed) is the force ating on the wheel. The other mg at P acts on the ground, not the wheel. The moment provided by the contact point P about the centre = tangential force due to friction x wheel radius. Note the frictional force is only equal to μmg when the wheel is on the point of slipping. At other times it is less than this. All this is detailed in the text.
  34. 1 point
    Well, there different forms of banking with varying purposes. In the Chinese Song Dynasty a system of low-interest lending was backed by the state was introduced to allow farmers to take on debts for spending during winter and planting seasons, which was repaid during harvest seasons. It was also used as an insurance against crop failure. What we know about the Mesopotamina system, it appears to be centered around royal houses and temples where commodities were safeguarded.
  35. 1 point
    I'm with you on that. To me, extinction is the enemy, and if we can prevent it, it doesn't really matter how. Of course, you don't want to advance the extinction of one species, by trying to save another, so it has to be done carefully. But if you can keep the remaining species alive, until the human population gets under control, then that's a result.
  36. 1 point
    Accelerating protons, deuterium nuclei, tritium nuclei, or alpha particles to the speeds at which they fuse is equivalent to high temperature. Extremely high temperatures ! I thought you were considering COLD fusion.
  37. 1 point
    I think it is important to make a distinction between psychosis and schizophrenia. While I am not an expert in the precise definition, from what I understand psychosis is a condition when the patient has issue with identifying something as real or not. Psychosis can be a symptom of a mental illness, such as schizophrenia, but they have additional diagnostic symptoms. As such, psychotic episodes can be caused by a variety of sources, such as drugs or sleep deprivation. While under these episodes brain activity may be altered (which could be visible on MRIs) in these examples the brain is not damaged per se. However, conditions that can cause prolonged psychosis are a different matter. Schizophrenia, for example is associated with a reduction of grey matter and this loss appears to be progressive. As DrmDoc mentioned, the mechanism behind that is not clear. However, since psychosis can occur without damages, and are the result of altered activities (at leas in some cases), there is good reason to assume they are more likely the result. On the other hand, there was some evidence that early treatment of psychosis with antipsychotics may result in slower detoriation. It still unclear whether this is because prolonged psychosis can lead to additional damages, or whether antipsychotics deal with something that actually do the damage. As a whole it seems that the neurprotective hypothesis as well as the hypothesis that psychosis may result in neural damage does not have a lot of evidence to date.
  38. 1 point
    I would think the biggest difference is that ,whereas for an undergrad degree a Prof is teaching you about a subject so that you learn the basics, for a graduate degree you are learning about a subject independently ( you do have an 'advisor' ) and develop your own 'tools and skill set'. IOW a PhD candidate will independently research and learn, to become an expert in a specific subject.
  39. 1 point
    I’m trying to understand this? If c were a constant that would mean that if you change the medium of empty space to say glass? Water? Etc? C would be unchanging, but the medium is set at empty space by Einstein (generally referred as a vacuum). This is a condition, so long as the condition doesn’t change c is like a constant but it requires the condition to remain so. Under the condition set by Einstein ( empty space) c becomes invariant without regard to how you move through this empty space. Yes, it may seem at odds to what you might expect ( not obvious), but the observation conforms to Newton’s first law of motion at all times as it should. When light passes a large source of gravity it is effected. The confusion comes when it is argued that under the influence of the gravity source c remains c which would violate Newton’s first law Yes, c is c invariantly, but only under the condition set by Einstein ( empty space). Change the condition then there is no reason to suggest that c doesn’t change. To suggest that c (the number) remains the number even as it passes through water would make that number a constant. It isn’t. c (the number) gets smaller as light passes through water. This does not violate Newton’s first law, or Einstein’s invariance of c in a vacuum condition. I’m thinking this through l can’t see where I might be confused 🤷‍♂️. Rhetorically, maybe? Somewhat long winded to the point of confusion? Yeah, I tend to reach that point. Seemingly effortlessly😒, but i don’t think I am confusing the word invariant with constant. Note, to clear up one paragraph when light passes near a large gravity source I’m assuming the presence of that source violates the condition set by Einstein of empty space. Assuming that a vacuum requires a condition of no effect. I’m assuming there is a hardware problem cause this and the Janus post didn’t show up until after I had replied to stranges post which was considerably after all the post were made? I would have preferred to have responded to this post first. What?
  40. 1 point
    md65536; In the graphic, the arc of radius 1 represents one unit of ct (sec, yr., etc). The red curve is the perception of distance traveled by the observer based on his speed and local time In the interesting scenario of an anaut moving outward from the center of a spherical system of objects, over a range of speeds, the sphere has a maximum radius at v/c=.707c, and two different speeds for each calculated distance. Relative to your puzzle, the green curve is 1/2 the local time for any given speed. Any pair satisfies 'equal distance'. Only one satisfies the '2:1 aging'. A horizontal line between the intersection of the green line and blue diagonal (light speed) projected downward to the red should provide the answer. A speed is .4472 and B speed is .8944. What do you think?
  41. 1 point
    What's wrong with that? Compassion is a huge part of many religions: the academic study of compassion might be useful - but it's not the same as the practice of compassion. When was the soul put into humans? Who cares - the answer won't make you a better human being, which is what religious teaching should be trying to help with. All this pretence at academia by 'religious' people seems to belie an insecurity and need for validation with science. Spiritual practices should stand on their own merits, anything that needs propping up with pseudo-pseudoscience should be left to fall. And honestly Gees, though there are some aloof people on this site, likely including myself, you are among the worst for it. Look at yourself before casting stones.
  42. 1 point
  43. 0 points
    ! Moderator Note If you reread the OP, you'll find your ignorant, misinformed stance is off-topic here. This thread is about how the climate is changing faster than the models predicted. Further attempts to troll this topic will be removed to the Trash.
  44. 0 points
  45. -1 points
    more than 9000 posts! Do you work sometime? The alternative is easy. NOT BLIND REVIEW! But it looks nobody wants it. Wonder why ahahahahaha
  46. -2 points
    If you cant review fast, then don't review. We don't need arrogant people like you. We need good, honest and responsible reviewers. From your words I can understand that you are none of them. Your words means that you have no idea of what a researchers work is. It looks like you are one of this arrogant (which most of the tiime is goes with ignorant) person that sit all the time at his desk thinking that he's the greatest in the world. If you cannot understand that reviewing other peoples work MUST BE a priority, then don't do it. Please make a favor to all of us and DON'T REVIEW!!!
  47. -2 points
    Who are you to judge how anyone else uses the word? 😊
  48. -2 points
    what do the unicorns do? I don't think this would work as a postulate. the problem with math is it has no locality, no starting point, other than arbitrary ones. things just don't add up unless you start somewhere. You can calculate the cannonball trajectory, but you have no cannon to fire it from. I don't think math works as a theory of the universe.
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.