• What is this feeling?

    I feel all tingly on the inside, i smile and i start crying and i have no idea why?
    I feel all tingly on the inside, i smile and i start crying and i have no idea why?
    2 answers · Psychology · 4 years ago
  • If intergalactic travel was possible, where would you visit?

    I'd love to visit Andromeda. Also Cartwheel Galaxy.
    I'd love to visit Andromeda. Also Cartwheel Galaxy.
    10 answers · Astronomy & Space · 4 years ago
  • How do you solve the absolute value inequality: | 2x + 1 | < | 3x - 2 | ?

    How do you solve the absolute value inequality: | 2x + 1 | < | 3x - 2 | ??? I'm learning absolute value inequalities for my math course, and was asked to solve this inequality. I'm confused because it has two absolute values. Can someone please help me out? I'd really appreciate it. Thanks in advance.
    How do you solve the absolute value inequality: | 2x + 1 | < | 3x - 2 | ??? I'm learning absolute value inequalities for my math course, and was asked to solve this inequality. I'm confused because it has two absolute values. Can someone please help me out? I'd really appreciate it. Thanks in advance.
    5 answers · Mathematics · 4 years ago
  • What are dimensions? Really Physically what are they?

    I know from what I have learnt there is 10 dimension and we live in a 3 dimensional world I am not sure if I am right but you get what I mean. But what I want to know is what are dimensions physically, Where are they I don't understand, Yes I understand we have 3 dimensions we can see in our universe x,y,y then a forth time, But what are they... show more
    I know from what I have learnt there is 10 dimension and we live in a 3 dimensional world I am not sure if I am right but you get what I mean. But what I want to know is what are dimensions physically, Where are they I don't understand, Yes I understand we have 3 dimensions we can see in our universe x,y,y then a forth time, But what are they physically. When people say dimensions curl over each other to look the same as other dimensions as the we could live in a 1 dimensional world but its so curled up that it looks 3 dimensional. What is curled up, the universe its self? All I want to know is where are these dimension's like the tenth dimension, Are they outside the universe? or they in subatomic particles, When people say dimensions can be curled over to travel to different dimensions what exactly would be curled over? I know basicly what dimensions are but where are they, Where are they found? Like can we find the 5th dimention thanks
    4 answers · Physics · 4 years ago
  • Two trains 150km apart towards each other on a parallel tracks, each moving at 25km/hr.?

    Two trains 150km apart towards each other on a parallel tracks, each moving at 25km/hr. A bird flies back and forth between the trains at 13km/hr until the trains pass each other. How far does the bird flies?
    Two trains 150km apart towards each other on a parallel tracks, each moving at 25km/hr. A bird flies back and forth between the trains at 13km/hr until the trains pass each other. How far does the bird flies?
    3 answers · Physics · 5 years ago
  • Can quantum computing create artificial consciousness?

    Quantum mechanics is what gives us humans free will. The fact that our world is probabilistic, explains why a human's choice is not predetermined. Let me explain. If our world was deterministic, with enough data on how every particle in your body moves, it would be possible to know what somebody is going to do before they do it. However,... show more
    Quantum mechanics is what gives us humans free will. The fact that our world is probabilistic, explains why a human's choice is not predetermined. Let me explain. If our world was deterministic, with enough data on how every particle in your body moves, it would be possible to know what somebody is going to do before they do it. However, uncertainty allows us to make decisions which are not already determined, giving us free will. My question is, would the same apply to artificial intelligence? If AI ran off a standard computer, it could only do what it is programmed to do. But if it ran off a quantum computer, wouldn't the uncertainty allow the AI to make probabilistic decisions? If the decisions of an AI were not deterministic, wouldn't that give it some sort of free will?
    3 answers · Physics · 5 years ago
  • Equation to find the time for an object to fall to the Sun from the distance of Earth's orbit?

    I've tried some sites with on-line calculators but they all assume a steady acceleration. An object falling to the Sun would accelerate faster as the gravitational pull increased. If you know of a site for this it would be great. PhotonX: You know that "g" changes constantly as the object approaches the Sun. At 1/2 the distance, g... show more
    I've tried some sites with on-line calculators but they all assume a steady acceleration. An object falling to the Sun would accelerate faster as the gravitational pull increased. If you know of a site for this it would be great. PhotonX: You know that "g" changes constantly as the object approaches the Sun. At 1/2 the distance, g increases by 4. I think your formula is only for negligible distances where the acceleration does not change appreciably. An on-line site to calculate would be nice.
    5 answers · Astronomy & Space · 5 years ago
  • What defines an intelligent civilization?

    If we found an civilization on another world what would define it as intelligent?
    If we found an civilization on another world what would define it as intelligent?
    8 answers · Astronomy & Space · 5 years ago
  • If the universe came from nothing then what is stopping a universe from popping up here and now?

    Please, if you are simply going to just post hate comments or give me the "go educate yourself" kind of answers then I beg you to spare me, I truly want to understand this problem I don't want to argue, I'm not here to prove god or disprove him its just something that came to my mind when reading about it and did not find anyone... show more
    Please, if you are simply going to just post hate comments or give me the "go educate yourself" kind of answers then I beg you to spare me, I truly want to understand this problem I don't want to argue, I'm not here to prove god or disprove him its just something that came to my mind when reading about it and did not find anyone who gave me an actual answer. I just posted this in the religion section thinking it would get more attention since most people I ask this question to relate this to god somehow, and I got barraged by hate comments so believe you me I already had my share of that so please answer this "rationally". Since some scientists proved that the universe is flat with 0 total energy, that would indicate that it requires no condition at all to exist, then what is stopping universes from popping up literally everywhere and every time? To elaborate on this, if we drop a pen it will fall, what kept it from hovering in the air? gravity. what if there was no gravity? it must hover unless something else pulls it down or push it towards the ground. What if there is nothing whatsoever pushing and pulling the pen, gravity or anything else... yet the pen falls to the ground, would that make any sense? So how is it then that universe which require nothing at all do not pop up right now just where you are sitting? isn't that enough proof that the universe did not come from nothing? I am very sorry please bare with me, I dont see how multiple universes can solve this, our universe whether its alone or one in a billion, it came from nothing, then why does not new infinite universes pop up inside our universe? Here is professor lawrence krauss talking about this issue: http://www.youtube.com/watch?v=veU6hK3jM... He starts explaining the "flat" universe in around 6mins in. I would appreciate it if Mr. Villager can elaborate on how can something can come from nothing "0" yet requires conditions, and why would that condition be "no pre-existing universe" I am not asking for facts, I would be content with a theoretical answer.
    3 answers · Astronomy & Space · 5 years ago
  • Are there other sense we know of that humans don't have?

    I mean, I, obviously, know of the five senses humans have, but do we know of senses we don't have, that we - humans, animals, insects - don't have? I'm wondering about this because I'm coming up with an idea of a story other intelligent life in our universe who have come across one of our Voyager spacecrafts, and I'd like to... show more
    I mean, I, obviously, know of the five senses humans have, but do we know of senses we don't have, that we - humans, animals, insects - don't have? I'm wondering about this because I'm coming up with an idea of a story other intelligent life in our universe who have come across one of our Voyager spacecrafts, and I'd like to delve into this civilization and make it as different as I can from us. I probably should have added that I mean senses we don't know of any creature having, which includes snakes and sharks. And by senses, I mean senses that we use all the time and know we use, like the 5 senses, not the other sixth senses that no one actually can notice themselves using, like the smelling of another's emotions. Anyways, I guess what I'm asking is if there are any fictional - for lack of a better word - senses, but by fictional I mean types of sense we, ourselves, can comprehend, and that scientists have discovered, but not from any animal. Actually, I wouldn't mind learning about senses or abilities that certain organisms have, like extremophiles, who don't need the sun to survive.
    4 answers · Astronomy & Space · 5 years ago
  • How are your thoughts on this guess of mine?

    Writing a new version of another question since I did not get the question right. Please, since English is my second language I hope you can disregard any spelling errors. I do not have a mathematical talent, at all. I do have a creative and logical mind though. I have thought about the "string theory" or "M-theory" a lot... show more
    Writing a new version of another question since I did not get the question right. Please, since English is my second language I hope you can disregard any spelling errors. I do not have a mathematical talent, at all. I do have a creative and logical mind though. I have thought about the "string theory" or "M-theory" a lot and got this thought. Do any of you have any thoughts about this? It is only thoughts and probably a wild guess scientificly but here goes: Mass creates a gravitational pull, and as the mass becomes greater and/or more dense, the gravitational pull gets stronger. It then pulls smaller portions of mass towards it and/or depending on speed and trajectory of portion pulls it into an orbit. Now if we start from the atom and scale up we see protons, neutrons and electrons (not having included antimatter or other..) and another step and we see quarks..and so on until we find the strings that are the final step. Now for my thoughts. The strings are folds in space-time that vibrate and thus (in a yet unknown way) creates matter... thus we are all vibrations of nothing. The folds might create the gravitational pull with the folding itself... like a piece of cloth that you pinch and make a small fold... anything on it will move towards the fold. And the more mass, the more strings and folds... the more gravitational pull. Since I have not studied this in any way (meaning: learned mathematical fomulas and rules about the area in astrophysics that it concerns) I hope you read this as written by the layman that I am. And yes I do know there are more advanced ways to describe what I wrote... but i did not want to write for hours :D
    4 answers · Astronomy & Space · 5 years ago
  • Universe is not infinite?

    My view point about the Universe is that it is neither finite nor infinite. Universe is not finite because if we consider it to be finite then we have to determine the boundaries and edges of the Universe and the question arises that if it is finite then what lies beyond the Universe? Universe is not infinite. The word "Infinite" is... show more
    My view point about the Universe is that it is neither finite nor infinite. Universe is not finite because if we consider it to be finite then we have to determine the boundaries and edges of the Universe and the question arises that if it is finite then what lies beyond the Universe? Universe is not infinite. The word "Infinite" is used for theoretical models and our assumptions. If we say 10/3 is an infinite number then it is right but we can not use the term infinite for physically existing universe because to say any physically existing object as "Infinite" does not make sense. Every thing that exists physically is finite except universe! My conclusion is that it's out of the limitations of our thinking power and the capabilities of mind to determine the size of universe so that the Universe is neither finite and nor infinite. Everyone is invited to discuss about my point of view about universe. If you talk about the earth or any spherical body; you say that the spheres do not have boundaries but i say the outer crust of the earth is the boundary of the earth and same is the situation for spheres! "Finite but without boundaries", it can't not be understand. Boundary is the property of finite objects. Every object we know is finite except the Universe( We are not sure about it's size), and all the finite things have boundaries. I said that the Universe neither finite nor infinite because we can't prove it to be finite and infinite. At this time we have no enough knowledge and technology to know the size of universe. Perhaps, after certain time (many centuries after our death) the astronomers and scientists may became successful to know this secret! If we say that the Universe is finite we have to provide evidence and if we say that it's infinite we have to reveal evidences and can't do this so that it's neither finite and nor infinite! >>The two positions are mutually exclusive. 'Infinite' literally means 'not finite'. Have you ever learned the nature of light? Light is a wave and also a particle, everyone knows. Now if i say in English literature it is false statement then? Tell me Mr. how is it possible one thing seems in two shapes. how is it possible? >>Why? Earth's surface is finite. Where are its boundaries and edges? As Red Rose says, this is a case of something that is finite but unbounded. Mr. what do you mean by unbounded? Define it properly. The outer surface is the boundary of earth including the water surface and land surface. >>That is the general consensus in the scientific community. If it is not infinite it must by definition be finite. Tell me what should light be? particle or a wave? if you say it should be either a particle or a wave, not both, then what people will call you? a idiot? >>Out of your thinking power maybe, but why should that apply t >>Out of your thinking power maybe, but why should that apply to the whole of humantiy? You have showed your behavior which you usually shows in your home. so please this is not your home, it's a community of Good people not people like you, >>No, the SURFACE is finite but unbounded. There is no edge to the surface of a sphere, yet it is manifestly not infinite. The Universe is like the surface of a sphere. The outer part of a sphere is it's boundary. In fact you do not know about the word "Boundary" so i recommend you to read literature books which defines the word "boundary". Take an example of a ball, the outer surface which we see is it's boundary! Now tell me how earth is unbounded? Mr. the surface of water and land of the earth is it's boundary! >>Define the boundary of a spherical surface then. Not the solid sphere, the surface. The outer part of a sphere is it's boundary.Take an example of a ball, the outer su >>Once again, the SURFACE. Where is Earth's easternmost boundary? If I start in London and travel due east where do I find a boundary on the surface? How about due north? Or indeed in any direction? If I can keep going in any direction and never reach and end then the thing I am traveling over is unbounded. In fact, you did not understood my point. I did not said about the "boundary" which you are describing here. I mean boundary mean "Outer most Limit or a volume of an object" Get some point, consider a box( placed in space)with one meter in all three dimensions then it's volume limit is 3 meter cube. It mean it occupies 3 meter cube volume in the space. And beyond this box there is space. Now consider the universe as a box, now describe what is it's outer most limit or the limit of it's volume and describe what is beyond the universe( Universe is consists on mass/energy and space) Can you define how long is the space of the universe? &g >>Once again, the SURFACE. Where is Earth's easternmost boundary? If I start in London and travel due east where do I find a boundary on the surface? How about due north? Or indeed in any direction? If I can keep going in any direction and never reach and end then the thing I am traveling over is unbounded. In fact, you did not understood my point. I did not said about the "boundary" which you are describing here. I mean boundary mean "Outer most Limit or a volume of an object" Get some point, consider a box( placed in space)with one meter in all three dimensions then it's volume limit is 3 meter cube. It mean it occupies 3 meter cube volume in the space. And beyond this box there is space. Now consider the universe as a box, now describe what is it's outer most limit or the limit of it's volume and describe what is beyond the universe( Universe is consists on mass/energy and space) Can you define how long is the space of the universe? If I start in London and travel due east on the surface of land and water then I'll reach again to London from west because the earth is like a sphere and the whole track i cover is the outer-most limit of the earth!( It's the boundary i said!) The Volume which earth occupy in the space is limited, that was my point( I called it "boundary") >>Why? Your intuitive thinking of the Universe as a three dimensional object is the limiting factor here. What do you think the planets and stars are 4-dimensional? are they not 3-dimensional? Please be honest, tell me what is beyond the universe as in the example of a box, the space is beyond the box. What is beyond the universe? Space is present in anywhere in the universe. Can you tell me, how long is the space? or there any limits of its size? if yes then what is beyond the space? if no then how is it logical and comprehensible? >>I can't tell you. All I can tell you is that your failure to understand the concept of finite but unbounded despite the numerous examples given is your own problem, not mine. Where is the end of a line that describes a cricle? is it infinite? If you can't tell then it's the end of useless debate. My question was about the universe and you are talking about a circle. Every point on the circle is the end of the line! The point we consider the beginning of the curve is the end of curve in the whole circumference. But keep in mind my question was not about a circle it was about the size of universe. And i don't know why are you asking for a circle.
    13 answers · Astronomy & Space · 5 years ago
  • Can someone explain to me what an "electric universe" is?

    Can someone explain this to me? (In terms of something I would understand) What an "Electric Universe" is?
    Can someone explain this to me? (In terms of something I would understand) What an "Electric Universe" is?
    3 answers · Astronomy & Space · 5 years ago
  • How would you derive Kepler's 3rd law?

    By considering two masses orbiting their common centre of mass how would you derive: (P^2)=(4pi) (a^3) / G(m1 + m2) Thank you
    By considering two masses orbiting their common centre of mass how would you derive: (P^2)=(4pi) (a^3) / G(m1 + m2) Thank you
    1 answer · Astronomy & Space · 5 years ago
  • If we could split a person on every single atom in his body?

    map it all and then store and send information on the other place where we would compose a new person from other atoms but in correct way according to the mapping we made (hypothetically of course); would that person be the same as the first one? Would they share memories?
    map it all and then store and send information on the other place where we would compose a new person from other atoms but in correct way according to the mapping we made (hypothetically of course); would that person be the same as the first one? Would they share memories?
    3 answers · Astronomy & Space · 5 years ago
  • Do galaxies revolve around anything?

    like planets do around stars and stars around the center of the Galaxy..
    like planets do around stars and stars around the center of the Galaxy..
    9 answers · Astronomy & Space · 5 years ago
  • If we mix human intelligence, with logical power of supercomputers, could we figure out all math's enigmas?

    Or just it is too complex to be understood?
    Or just it is too complex to be understood?
    2 answers · Mathematics · 5 years ago