Why can't we simulate gravity? |
- Why can't we simulate gravity?
- When the brain receives a nerve signal from the skin, how does it differentiate between a heat signal, a cold signal, a pain signal, a pressure signal etc?
- Since friction originates from electromagentic force, does that mean that neutrons, Which are neutral to each other, can overlap?
- What is the best way to plot the geometry of multiple intersecting magnetic and diamagnetic fields?
- Why are alpha particles invariably emitted from unstable nucli rather than individual proton or deuteron or 3He ?
- Why does planet's mass affect it's speed around sun?
- What speeds do particles in the center of an atomic blast achieve?
- Has there been any proof to a preons existence? And exactly what is it?
- How are we sure how many protons/neutron an atom has?
- What is the center of mass for a ring? For example, if we built a massive ring world, without any artificial gravity, where would gravity take us?
- What is 0 divided by 0?
- Does the Milky Way Galaxy orbit around anything?
- Orbital mechanics question: can you burn for a direct capture of mars orbit as you leave earth orbit?
- What happens when the sound barrier is broken at or around absolute zero?
- If you push a heavy object in space, would you both be pushed at an equal distance or would you be pushed further?
- What are the hypothetical properties of gravitons, and what are their implication?
- Is fusion actually happening inside of fusion test reactors?
- Why can't we simply melt uranium metal to separate out the U-235? (Enrich it)
- What languages are the most efficient and inefficient ones?
- How do stars die?
- How are lab rats given cancer?
- How did the scientists who made the cancer vaccine get the mice to have cancer?
- How worried should we be about melting permafrost releasing mercury?
| Why can't we simulate gravity? Posted: 09 Feb 2018 08:29 AM PST So, I'm aware that NASA uses it's so-called "weightless wonders" aircraft (among other things) to train astronauts in near-zero gravity for the purposes of space travel, but can someone give me a (hopefully) layman-understandable explanation of why the artificial gravity found in almost all sci-fi is or is not possible, or information on research into it? [link] [comments]  |
| Posted: 10 Feb 2018 03:54 AM PST Is it "code-based", like different levels/durations of charge? Is it "structure-based", like the pain-detecting nerves are connected to a pain-detecting piece of brain? Or something else entirely? [link] [comments]  |
| Posted: 10 Feb 2018 03:05 AM PST Overlap = exist in the same spot in case it isn't clear. This question can be taken a step further, since the force that keeps protons together should be stronger than the force that repels them (otherwise there are no atoms). Would that mean that protons in an atom should be compressing into a single point so that the nucleus has the volume of a single proton? [link] [comments]  |
| What is the best way to plot the geometry of multiple intersecting magnetic and diamagnetic fields? Posted: 09 Feb 2018 08:24 AM PST Example of some practical questions to tackle are those presented in these demonstrations: https://www.youtube.com/watch?v=sENgdSF8ppA Essentially how could you plot the path that electrons are taking when a magnets interact with eachother or when they interact with a diamagnetic. Georgia State University hosts a basic example of magnetic fields which likely we have all seen before: http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/magforcon.html But how do we mathematically plot and predict how a magnetic field will behave when subjected to multiple sources in various amounts of Tesla units and their interactions with diamagnetic material? Thanks Science! [link] [comments]  |
| Posted: 10 Feb 2018 01:54 AM PST i know about the binding energy term and stability of alpha particle in comparable with the proton, 3He,deuteron. [link] [comments]  |
| Why does planet's mass affect it's speed around sun? Posted: 10 Feb 2018 06:08 AM PST Let's assume that planet orbits sun perfectly circular. If force by which sun pulls planet is GMm/r2, and F=ma than a = GM/r2. Now we also know that for circular motion: a = V2 / r , which means that V = sqrt(r * GM/r2) So from this equations it seems that mass of the planet shouldn't matter at all. But I know that mass of the planet does matter if it's quite large, how? why? I mean are this laws incorrect? or do I miss something? [link] [comments]  |
| What speeds do particles in the center of an atomic blast achieve? Posted: 09 Feb 2018 05:13 PM PST How do they compare to the velocities of particles in an experiment at the LHC? [link] [comments]  |
| Has there been any proof to a preons existence? And exactly what is it? Posted: 10 Feb 2018 03:51 AM PST |
| How are we sure how many protons/neutron an atom has? Posted: 09 Feb 2018 12:03 PM PST |
| Posted: 09 Feb 2018 04:46 PM PST |
| Posted: 09 Feb 2018 07:45 PM PST I know that that a number divided by zero is undefined, but also a number divided by itself is also supposed to be 1. There is another way to look at it as well; what number times 0 will equal 0 which is every possible number. So which is it? I felt this was a better place to post than theydidthemath or estimation, let me know if I should ask over there as well. [link] [comments]  |
| Does the Milky Way Galaxy orbit around anything? Posted: 09 Feb 2018 01:24 PM PST Ok, so the fact that the earth orbits the sun is trivial enough. Then the sun orbits around the center of the milky way (side note, I would love for more information about this if anyone has it available). But, does the Milky Way itself rotate around some even larger object? And if so, is there a consensus, or at least theories, on how far it goes in this manner? Thanks in advance! [link] [comments]  |
| Posted: 09 Feb 2018 01:22 PM PST A friend and I got into a discussion about this. He says its impossible to do without a significant retro burn. I say it's just requires a lot of precision and is impractical but possible. What say you? [link] [comments]  |
| What happens when the sound barrier is broken at or around absolute zero? Posted: 09 Feb 2018 11:06 AM PST Basically, I just want to know if it is any different from breaking the sound barrier at normal conditions. Has this been done? I have read that it is easier to break the sound barrier at lower temperatures and lower pressures. [link] [comments]  |
| Posted: 09 Feb 2018 08:13 PM PST |
| What are the hypothetical properties of gravitons, and what are their implication? Posted: 09 Feb 2018 03:57 PM PST I've heard from some various sources (not sure about their validity though) that certain energies and forces have an complementary particle (I.e. photons and light waves), and heard that the complementary particles to gravity are called gravitons. what hypothetical properties would these have, and what would that implicate according to those properties (I.e. for future research)? (Sorry I'm on the app and it was bugging so I deleted my initial post, I am re-uploading it now) [link] [comments]  |
| Is fusion actually happening inside of fusion test reactors? Posted: 09 Feb 2018 01:37 PM PST I've seen lots of headlines about working fusion reactors, but they all seem to beat around the bush in stating whether or not fusion is actually happening; the most press sites are willing to state is that generating "first plasma" was successful. Is fusion going on inside of the reactors? How can we tell? Has fusion ever been successfully observed on earth? [link] [comments]  |
| Why can't we simply melt uranium metal to separate out the U-235? (Enrich it) Posted: 09 Feb 2018 01:50 PM PST We currently use things like a centrifuge to separate out the enriched U-235 from the U-238, because the U-235 isotope is slightly lighter. As I understand it, the 2 isotopes are chemically identical, so the only way to separate them is by their (very)slightly weight difference. Why can't we just melt a bunch of uranium and then let it settle in it's liquid form and scrape the U-235 "cream" off the top? [link] [comments]  |
| What languages are the most efficient and inefficient ones? Posted: 09 Feb 2018 09:56 AM PST In other words: what languages has, on average, the longest sentences? [link] [comments]  |
| Posted: 09 Feb 2018 03:51 PM PST |
| How are lab rats given cancer? Posted: 09 Feb 2018 01:24 PM PST |
| How did the scientists who made the cancer vaccine get the mice to have cancer? Posted: 09 Feb 2018 07:15 PM PST |
| How worried should we be about melting permafrost releasing mercury? Posted: 09 Feb 2018 10:54 AM PST |
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