Why is easier to balance at bicycle while moving rather standing in one place? |
- Why is easier to balance at bicycle while moving rather standing in one place?
- What are the largest particles for which we have showns there to be an interference pattern when using them in a double slit experiment?
- High powered Lasers, can they 'clean' other contaminants, such as radiation as this video claims?
- Is there a finite size and mass that a black hole cannot surpass? If so, why? If not, why not?
- Why are opals iridescent?
- If black holes do not emit any light. Why isn't it obvious if there is a super massive black at the centre of a galaxy? Surely there would just be a massive region of space with absolutely nothing present?
- What advances in psychology/psychiatry have led to the greatest increases in human welfare?
- If a white dwarf comes close to an ordinary star could it "steal" enough material to start fusing hydrogen again?
- Could a human's strength overcome the strong nuclear force in a single atomic nucleus?
- Does Viscosity have anything to do with Mass of a liquid?
- What is the difference between a nuclear bomb, an atomic bomb and a hydrogen bomb and which one is the most destructive?
- Is the Kübler-Ross model of grief (5 stages of grief) still considered valid?
- Does the atmosphere get colder the higher up you go?
- Before Gauss, if someone came up with a probability distribution only slightly different from his normal distribution, would it have persisted in mathematics?
- If big cats don't purr, then what's going on in this video? (Link in text)
- how come when we study individual atoms they arent teleporting and rapidly changing states by quantum mechanics?
- How are physicists so sure dark matter exists as opposed to the theory being wrong?
- Is there a binary number which can be represented perfectly, where it cannot be represented perfectly in a decimal form?
- How strong of an Electric Field can humans be in before Dielectric Breakdown makes it unliveable? would something else make the situation unliveable before this even occurs?
- Is peanut butter a solid or a liquid?
- How do multi-dimensional matrices work (e.g., multiplication of 2 4D-matrices)?
- If I rotate an object, do its atoms rotate too?
| Why is easier to balance at bicycle while moving rather standing in one place? Posted: 07 Apr 2016 05:08 AM PDT Similar to when i want to balance a plate at the top of a stick. I have to spin it. [link] [comments]  |
| Posted: 07 Apr 2016 04:26 AM PDT i know that it has been done with c60 molecules, but that was back in 1999. [link] [comments]  |
| High powered Lasers, can they 'clean' other contaminants, such as radiation as this video claims? Posted: 07 Apr 2016 04:55 AM PDT I apologize for being very ignorant, but I saw somewhere that high powered cleaning lasers can be used for 'nuclear decontamination.' Is this actually true? If so, how? My understanding is that the laser reacts with a darker material than what is reflective underneath and strips the 'contaminant' away without harming the reflective surface, is nuclear contamination something that is less reflective than metal? Or is this video talking out of its ass? Can emissions of radiation clean radioactivity? If so, how? Source: https://m.youtube.com/watch?v=mSP1vH7-t7s [link] [comments]  |
| Is there a finite size and mass that a black hole cannot surpass? If so, why? If not, why not? Posted: 07 Apr 2016 05:32 AM PDT |
| Posted: 06 Apr 2016 04:18 PM PDT Inspired by this gif, I realize that while I work with crystals, I have no idea where the colours and brilliance of opals come from. What's going on inside these gemstones? [link] [comments]  |
| Posted: 07 Apr 2016 03:41 AM PDT I may be wrong but I'm almost certain I read somewhere that black holes are hard to detect. Given the above reasoning I can't understand why, hopefully you guys can explain this to me? [link] [comments]  |
| What advances in psychology/psychiatry have led to the greatest increases in human welfare? Posted: 06 Apr 2016 08:47 PM PDT To be clear, I'm looking for specific therapies or drugs that have been incredibly successful at treating a particular psychological condition that had previously caused immense amounts of suffering. [link] [comments]  |
| Posted: 07 Apr 2016 05:40 AM PDT Also, could a collision between two white dwarfs result in an ordinary star? [link] [comments]  |
| Could a human's strength overcome the strong nuclear force in a single atomic nucleus? Posted: 07 Apr 2016 04:02 AM PDT In other words, could a human separate a proton and a neutron by pulling, if it were mechanically somehow possible to do? I realize this may be a very childish question, but I have no idea how strong the strong nuclear force actually is. I know it's incredibly strong compared to gravity, which we can easily resist on a macroscopic scale, but I'd like to get a clearer understanding. [link] [comments]  |
| Does Viscosity have anything to do with Mass of a liquid? Posted: 06 Apr 2016 04:36 PM PDT |
| Posted: 06 Apr 2016 03:13 PM PDT |
| Is the Kübler-Ross model of grief (5 stages of grief) still considered valid? Posted: 07 Apr 2016 02:16 AM PDT I know it's been challenged by other research, but does the psychology community still generally accept it? Did it go the way of Freud? [link] [comments]  |
| Does the atmosphere get colder the higher up you go? Posted: 07 Apr 2016 04:13 AM PDT Shouldn't it get warmer since there is less atmosphere filtering? [link] [comments]  |
| Posted: 07 Apr 2016 03:54 AM PDT Ok, so I have experience in statistics but I am no expert. I may be wrong, but I believe that the normal distribution can only perfectly describe itself, that is, there is no natural random variable out there that has a distribution that is exactly normal. In a sense it is just a good (in some cases very good) approximation of the behaviour of many observable natural phenomena. Now, before Gauss, say someone came up with a distribution that had many of the same features: - symmetrical about its mean - large amount of points relatively close to the mean. - continuous i.e. still with the distinctive bell shape. would this function have been as well received and persisted in modern mathematics? since it also would only perfectly describe itself and be a good approximation for many natural random variables. Thanks in advance [link] [comments]  |
| If big cats don't purr, then what's going on in this video? (Link in text) Posted: 07 Apr 2016 02:18 AM PDT See, I've always been told that the thing that separates big cats from small cats is that small cats can purr while big cats can't (with the exception of the cheetah). So what's going on here? That sounds like purring to me. He's clearly happy. Cats purr when they're happy. [link] [comments]  |
| Posted: 07 Apr 2016 02:00 AM PDT On the same note, why does quantum mechanics seem to disappear at a large scale? [link] [comments]  |
| How are physicists so sure dark matter exists as opposed to the theory being wrong? Posted: 06 Apr 2016 07:36 AM PDT Hi, Recently I was listening to a podcast which was talking about how dark matter is predicted to exist because of various phenomena which cannot be explained with General Relativity could be if it existed, and they seemed pretty sure that they would be able to detect the dark matter. How is it that physicists think that dark matter exists as opposed to the theory being wrong, it seems like a bit of a fluke - like Vulcan to explain the differences in Mercury's orbit instead of the theory being wrong (Namely going from Newton's to Einstein's theory). Many of the reasons I have heard are typically either the theory has not been wrong yet (which seems a bit silly - Newton's theory wasn't shown to not be accurate for quite some time) or that General Relativity is so 'nice' that it wouldn't seem right that it is wrong (which seems even worse - as Feynman said 'It doesn't matter how beautiful your theory is, it doesn't matter how smart you are. If it doesn't agree with experiment, it's wrong.'). Thank you. [link] [comments]  |
| Posted: 06 Apr 2016 11:11 AM PDT There are certain fractions which cannot be represented using a finite amount of digits. For example, 1/3 = 0.33333..... We can never truly represent 1/3 as a decimal with a finite number of digits. Similarly, there are certain numbers which cannot be represented perfectly in binary - 1/3 is one of these numbers. However, 0.1 is also one of these numbers. You can never correctly represent 1 tenth in binary with a finite number of digits, even though you CAN in base 10. Are there any numbers which can be represented in binary, but cannot be represented in denary? If not, why not? I've tried to think of an example but can't, and it's a toughie to google too. My guess is that there are no such numbers, because all binary numbers can be made up by adding together the fractions 1/(2n) depending on the place of the current digit. [link] [comments]  |
| Posted: 06 Apr 2016 11:55 AM PDT |
| Is peanut butter a solid or a liquid? Posted: 06 Apr 2016 03:18 PM PDT its been a long argument between a friend and I (both work in medical labs). [link] [comments]  |
| How do multi-dimensional matrices work (e.g., multiplication of 2 4D-matrices)? Posted: 07 Apr 2016 02:14 AM PDT I just can't wrap my head around matrices with higher dimensionality. E.g., something like X = A * B, where A, B in |Ra x b x c x d. I can't imagine how this would work and am also not able to find a general rule for how to multiply matrices like these. [link] [comments]  |
| If I rotate an object, do its atoms rotate too? Posted: 06 Apr 2016 09:41 PM PDT Basically what I am asking is when I rotate, say, a metal bar, its orientation changes. But do the atoms that comprise it change their orientation with it, or do they remain static in their orientation? Alternately, is the atom's orientation just random and unset, and just constantly changing direction regardless of what I do to the object's position? [link] [comments]  |
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