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Showing content with the highest reputation on 03/16/19 in all areas

  1. With a 10 m diameter, your module would have to spin at ~1.4 radians/sec to get 1g at the floor. However, at head level, it will have dropped to ~2/3g, so you would have a 1/3 g difference between head and feet while standing. There is also the Coriolis effect to account for. If you are seated, the center of mass of your body is moving at a certain speed relative to the axis. When you are standing, in order to keep the same rotational rate, it has a smaller speed. If you go from a seated to standing position, your center of mass is going to want to keep moving at the same speed. The result is that you will feel a "force" that is trying to tip you over. Also, if you drop something, it will fall in a curve. This, and a changing g value, Would likely play havoc with your eye-hand coordination, especially if you are going back and forth between the spinning and zero g parts of the station.
    3 points
  2. That thought will eventually become a corrosive force in your life if you let it. We are living through a time when cultural perception is saturated by illusory examples of great achievement and success but 99% of it is media-enhanced BS. Everyone thinks they’re starring in the film adaptation of their own life. Everyone presents themselves as a glamorous high-flier on social media. It’s no wonder there’s this feeling of dejection and insufficiency spreading throughout western society. The first thing you should do, immediately, is consciously make the effort to stop comparing yourself to other people. We do that all the time without realising it, and from a psychological health perspective it is deeply unhelpful. The likelihood is that this is the largest single factor contributing to your sense of being underwhelmed at yourself Instead, compare yourself to who you were 1, 5 and 10 years ago. What’s changed? Why? What do you like and dislike about that? What steps can you take to duplicate and enhance the useful changes and phase out the mistakes?
    3 points
  3. Having been through an underwhelming progress rut (I was also mentally ill at the time), my solution was to find a subject that got me excited, was challenging and gave me the tools to better myself and think more rationally about the world...and study it. I ended up enrolling on a general sciences course to find out what really rocked my boat and after taking the plunge it became clear that physics was my subject. So I kept enrolling for courses (I was on a low wage at the time so I was studying for free due to an earnings threshold). Indeed, you're at a time where there are so many free resources at your disposal due to the internet that a formal as well as self taught education is easily at your disposal. After studying and thoroughly enjoying the distant learning experience, I walked away with a degree, new friends and an abundance of ideas on how I could utilise what I had learned. At present I'm a test engineer for F1 and I get to play around with the skills I picked up through studying mathematics and physics. I'm now in the process of forming a start up company that deals with tabletop gaming assets using photogrammetry, 3D printing and 3D modelling. My point is that you can hit absolute rock bottom, which is where I was and have the ability to claw yourself out of it if you can focus on, not only what you're good at but use the abundance of resources that are free, to climb out of that rut. As a starting point I would think of what really gives you a mental hard on and do an introductory course ...I studied computer science through edx, I highly recommend it
    2 points
  4. Here's a graphic showing how big the ISS is when compared to some other things, including the space station from 2001. If you look at the ISS, most of its size is due to the solar panels, and only a small part of it is the station proper. Spinning it while maintaining the proper orientation of the panels would present a problem. Also keep in mind that the difference in size isn't the only issue. If you spin the station in order to give it gravity, you also would have to make it strong enough to withstand the stresses, making it bulkier and more massive.
    2 points
  5. Today I learned what happens if you glue two Mobius strips together and then cut them down the middle. You may be surprised... There is an interview Tokieda here: https://www.quantamagazine.org/tadashi-tokieda-collects-math-and-physics-surprises-20181127/ He is an interesting guy. He taught himself maths from a book he found in the library. Only the book was in Russian, so first he had to learn Russian....
    2 points
  6. Pages and pages of poorly writen ridiculous scifi writings which you get to see at OT 7 level of "faith" after you payed them hundreds of thousands of dollars. Then theres slappy Miscavige who runs a corporation based on modern version of slavery (Sea Org), breaking up families by the Scientology disconnection policy and dozens of other examples which put Scientology in a cult bucket. By the way...please cut down on the amount of threads before you get shut down by the mods. Most of the content I see in the last week or two is started by you and frankly, you could use google for most of it.
    1 point
  7. The premise of your question is false. The basic idea is that time itself began with the BB. Ergo, asking what came before is meaningless. There was no before since there was no time. It’s undefined.
    1 point
  8. L. Ron Hubbard's science fiction wasn't worth reading. From what little I know of them, the secrets of the religion he created aren't worth paying for either. I suppose his religion is as true as any, but sillier than most.
    1 point
  9. My knowledge is not sufficient enough to elaborate on the Higgs yet.
    1 point
  10. As there is no evidence go gods, then religion is not based on reality. But I agree it is based on the logic of man, because man invented gods and religion. It isn't logic. It is just what you believe. As there are lots of religions with multiple gods, it is obvious your are wrong. I think you mean ALL religions are man-made and are built on some baseless suppositions. That isn't what evolution says should happen. But feel free to keep making ignorant statements like this. It just demonstrates that you don't know what you are talking about. If you think evolution is a meaningless idea, how do you think that domesticated animals and crops happened? We know evolution happens: we can see it happening. Only the ignorant and gullible think that. That is a really ridiculous and illogical argument. Just because robots are designed doesn't mean that everything is designed. It is as stupid as saying that because I can make air move by blowing, all winds must be created by people blowing air.
    1 point
  11. No, that's the wrong way round. There is no reason that anyone would believe in gods unless they had an experience (being indoctrinated by their parents for example) that made them believe. If it can mean whatever the reader wants, then it doesn't really mean anything. The difference is that science is based on evidence and can be tested. While your bible is just a collection of stories made up by people a long time ago. I know which I would trust.
    1 point
  12. I think your mistake lies in the phrase "love we idolize in our thoughts". This wishful state presumes we won't have to work at loving that one other person, that we'll perceive them as perfect, and that this state will be effortless to maintain. Lasting love that comes without effort probably is unattainable. But you'll find that as soon as you're willing to commit to that other person, to continually improve your relationship with the one you love, and do the actual work that makes both lives richer, easier, and more fulfilling, love like you describe in the OP becomes possible. It seems to be one of those things you can do if you believe you can and work hard to make it happen.
    1 point
  13. I would agree, if that source is "floods happen". It is almost certain that the Biblical version was borrowed from the Epic of Gilgamesh. Others may have been too. Others could easily arise independently. After all, the majority of civilisations have been either on the coast or on major rivers. So both the Mesopotamian and Egyptian civilisations were both dependent on floods (for irrigating and fertilising the land) but also at danger from them. This is probably the reason that they both developed fairly advanced astronomy and, hence, mathematics. So they would both have had stories and legends associated with floods. There was also cultural exchange between them, so it wouldn't be surprising if there was some overlap between their stories. Some parts of any flood story will be common: "humans saved"? Well, duh, humans are here. "boat built"? Well, what would you expect. In other parts of the world, floods could be caused by different things and so some details of the story would be different. For example, it is possible that the legend of Atlantis is based on the destruction of the Mycenean civilisation by a tidal wave. You don't give a source for your diagram (naughty) but, from the content, I would assume it is not objective and biased towards confirming the Judeo-Christian myth.
    1 point
  14. ...if you think that my proposition of separation of compounds was too complex to achieve, then be so kind and propose your own other economically viable compound separation method interesting for @pennieloot... I believe so, that will be more constructive.. John (aka "nitpicker"), in known for, instead of answering OPs questions, is nitpicking other members answers, giving nothing interesting to people who originally asked question instead..
    0 points
  15. 0 points
  16. No Pastor Doug is correct. He is referring to Hebrew slaves. It is my explanation that is wrong. Christains don't deny bad things happen in the Bible. We are not blindly following the Bible. Nor with good Pastors we are not being lied to. The Old Testament is difficult to understand. The Old Testiment was Hebrew law. But the question is unanswerable. And no Christian can answer it. But one unanswered question does discredit the Bible. In my own opinion, the question is not why God allows slavery, but why does Man allow slavery. Why is God or how is God responsible?
    -1 points
  17. Yes, man is free to choose every belief and every doing but he is responsible against his wisdom. He should chooses the right based on his intellect and logic. Also God sent prophets to enlighten people about realities of God and the realities that they didn't know. So after wisdom and coming the prophets (as the spiritual teachers of people) there is not any excuse for anyone. The doctrine of a religion should be according to reality and logic of man. As I explained before being multiple gods in the universe is not possible and is not adaptable with logic. Some of the religions are man-made and are built on some baseless suppositions. It is a simple denying and is not according to this experience and logic of man that every artifact has a designer and manufacturer. some lifeless molecules never are change into a germ cell by themselves or by the meaningless idea, evolution! the sperm by all its complex scientific structure and mysteries says to us that it is created by a high intelligent existence. Is a robot made by evolution?! Or it has an intelligent and knowledgeable designer and manufacturer?
    -1 points
  18. The original post does refer to Pastor Doug's description of slave. This is simply meaning only the Jewish people should participate. Even the slave can eat. Simple enough. This is not a new question. Anyone who reads the Bible will probably ask this. IMHO anything can be ask but there is no easy way to settle the debate. We don't have a way to know why things are the way they are other than history, the Bible, and science. To me it would be like blaming the leader of a country for everything that is wrong in the country. It would also mean we have no choice in our actions which is a whole other debate. But I think what is looked over how important the present is. It isn't like this stuff is just in the past, we are living it.
    -2 points
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