What's truth nature of the universe? To answer this question, humans come up with stories to explain the planet . We test our stories and learn what to stay and what to throw away.
But the more we learn, the more complicated and bizarre our stories become. a number of them such a lot so, that it's really hard to understand what they're actually about. Like string theory. A famous, controversial and sometimes misunderstood story, about the character of everything.
Why did we come up with it and is it correct? or simply a thought we should always chuck out? to know truth nature of reality, we checked out things up close and were amazed. Wonderous landscapes within the dust, zoos of bizarre creatures, complex protein robots. All of them from made up of structures of molecules made up of countless even smaller things: Atoms. We thought they were the ultimate layer of reality, until we smashed them together really hard and discovered things that cannot be divided anymore: Elementary particles.
But now, we had a problem: they're so small that we could not check out them. believe it: what's seeing? to ascertain something, we'd like light, an electromagnetic radiation . This wave hits the surface of the thing and gets reflected back from it into your eye. The wave carries information from the thing that your brain uses to make a picture . So you cannot see something without somehow interacting with it.
Seeing is touching, a lively process, not a passive one. this is often not a drag with most things. But particles are But particles are very, But particles are very, very, But particles are very, very, very small. So small that the electromagnetic waves we wont to see are too big to the touch them. light just passes over them. we will attempt to solve this by creating electromagnetic waves with more and far smaller wavelengths. But more wavelengths, means more energy. So, once we touch a particle with a wave that features a lot of energy it alters it.
By watching a particle, we modify it. So, we will not measure elementary particles precisely. This fact is so important that it's a name: The Heisenberg indeterminacy principle . the idea of all physics . So, what does a particle appear as if then? what's its nature? we do not know. If we glance really hard, we will see a blurry sphere of influence, but not the particles themselves. We just know they exist. But if that is the case, how can we do any science with them?
We did what humans do and invented a replacement story: A mathematical fiction. The story of the purpose particle. We decided that we might pretend that a particle may be a point in space. Any electron may be a point with a particular charge and a particular mass. All indistinguishable from one another . this manner physicists could define them and calculate all of their interactions. this is often called Quantum theory , and solved tons of problems.
All of the quality model of high-energy physics is made thereon and it predicts many things alright . Some quantum properties of the electron for instance are tested and are accurate up to 0, 0,00 0,0000 0,000000 0,00000000 0,0000000000 0,000000000000 0,0000000000002 %. So, while particles aren't really points, by treating them as if they were, we get a reasonably good picture of the universe.
Not only did this concept advance science, it also led to tons of real-world technology we use everyday. But there is a huge problem: Gravity. In quantum physics , all physical forces are carried by certain particles. But consistent with Einstein's general theory of relativity , gravity isn't a force just like the others within the universe. If the universe may be a play, particles are the actors, but gravity is that the stage. to place it simply, gravity may be a theory of geometry.
The geometry of space-time itself. Of distances, which we'd like to explain with absolute precision. But since there's no thanks to precisely measure things within the quantum world, our story of gravity doesn't work with our story of physics . When physicists tried to feature gravity to the story by inventing a replacement particle, their mathematics broke down and this is often an enormous problem. If we could marry gravity to physics and therefore the standard model, we might have the idea of everything.
So, very smart people came up with a replacement story. They asked: what's more complex than a point? A line- A line or a string. String theory was born. What makes string theory so elegant, is that it describes many various elementary particles as different modes of vibration of the string. a bit like a violin string vibrating differently can offer you tons of various notes, a string can offer you different particles most significantly , this includes gravity.
String theory promised to unify all fundamental forces of the universe. This caused enormous excitement and hype. String theory quickly graduated to a possible theory of everything Unfortunately, string theory comes with tons of strings attached. Much of the maths involving a uniform string theory doesn't add our universe with its three spatial and one temporal dimensions. String theory requires ten dimensions to figure out.
So, string theorists did calculations in model universes. then attempt to get obviate the six additional dimensions and describe our own universe But thus far , nobody has succeeded and no prediction of string theory has been proven in an experiment So, string theory didn't reveal the character of our universe. One could argue that during this case string theory really isn't useful in the least .
Science is all about experiments and predictions. If we will not do those, why should we bother with strings? It really is all about how we use it. Physics is predicated on maths. Two plus two makes four. this is often true regardless of how you are feeling about it. and therefore the maths in string theory does compute . That's why string theory remains useful.
Imagine that you simply want to create a cruise liner , but you simply have blueprints for alittle dinghy . There are many differences: the engine, the engine, the materials, the engine, the materials, the scale. But both things are fundamentally the same: Things that float. So, by studying the dinghy blueprints, you would possibly still learn something about the way to build a cruise liner eventually.
With string theory, we will attempt to answer some questions on quantum gravity that are puzzling physicists for many years . like how black holes work or the knowledge paradox. String theory may point us within the right direction. When utilized in this spirit, string theory becomes a precious tool for theoretical physicists and help them discover new aspects of the quantum world and a few beautiful mathematics.
So, maybe the story of string theory isn't the idea of everything. But a bit like the story of the purpose particle, it's going to be a particularly useful story. we do not yet know what truth nature of reality is but we'll keep arising with stories to undertake and determine . Until at some point , Until at some point , hopefully Until at some point , hopefully, we do it.
But the more we learn, the more complicated and bizarre our stories become. a number of them such a lot so, that it's really hard to understand what they're actually about. Like string theory. A famous, controversial and sometimes misunderstood story, about the character of everything.
Why did we come up with it and is it correct? or simply a thought we should always chuck out? to know truth nature of reality, we checked out things up close and were amazed. Wonderous landscapes within the dust, zoos of bizarre creatures, complex protein robots. All of them from made up of structures of molecules made up of countless even smaller things: Atoms. We thought they were the ultimate layer of reality, until we smashed them together really hard and discovered things that cannot be divided anymore: Elementary particles.
But now, we had a problem: they're so small that we could not check out them. believe it: what's seeing? to ascertain something, we'd like light, an electromagnetic radiation . This wave hits the surface of the thing and gets reflected back from it into your eye. The wave carries information from the thing that your brain uses to make a picture . So you cannot see something without somehow interacting with it.
Seeing is touching, a lively process, not a passive one. this is often not a drag with most things. But particles are But particles are very, But particles are very, very, But particles are very, very, very small. So small that the electromagnetic waves we wont to see are too big to the touch them. light just passes over them. we will attempt to solve this by creating electromagnetic waves with more and far smaller wavelengths. But more wavelengths, means more energy. So, once we touch a particle with a wave that features a lot of energy it alters it.
By watching a particle, we modify it. So, we will not measure elementary particles precisely. This fact is so important that it's a name: The Heisenberg indeterminacy principle . the idea of all physics . So, what does a particle appear as if then? what's its nature? we do not know. If we glance really hard, we will see a blurry sphere of influence, but not the particles themselves. We just know they exist. But if that is the case, how can we do any science with them?
We did what humans do and invented a replacement story: A mathematical fiction. The story of the purpose particle. We decided that we might pretend that a particle may be a point in space. Any electron may be a point with a particular charge and a particular mass. All indistinguishable from one another . this manner physicists could define them and calculate all of their interactions. this is often called Quantum theory , and solved tons of problems.
All of the quality model of high-energy physics is made thereon and it predicts many things alright . Some quantum properties of the electron for instance are tested and are accurate up to 0, 0,00 0,0000 0,000000 0,00000000 0,0000000000 0,000000000000 0,0000000000002 %. So, while particles aren't really points, by treating them as if they were, we get a reasonably good picture of the universe.
Not only did this concept advance science, it also led to tons of real-world technology we use everyday. But there is a huge problem: Gravity. In quantum physics , all physical forces are carried by certain particles. But consistent with Einstein's general theory of relativity , gravity isn't a force just like the others within the universe. If the universe may be a play, particles are the actors, but gravity is that the stage. to place it simply, gravity may be a theory of geometry.
The geometry of space-time itself. Of distances, which we'd like to explain with absolute precision. But since there's no thanks to precisely measure things within the quantum world, our story of gravity doesn't work with our story of physics . When physicists tried to feature gravity to the story by inventing a replacement particle, their mathematics broke down and this is often an enormous problem. If we could marry gravity to physics and therefore the standard model, we might have the idea of everything.
So, very smart people came up with a replacement story. They asked: what's more complex than a point? A line- A line or a string. String theory was born. What makes string theory so elegant, is that it describes many various elementary particles as different modes of vibration of the string. a bit like a violin string vibrating differently can offer you tons of various notes, a string can offer you different particles most significantly , this includes gravity.
String theory promised to unify all fundamental forces of the universe. This caused enormous excitement and hype. String theory quickly graduated to a possible theory of everything Unfortunately, string theory comes with tons of strings attached. Much of the maths involving a uniform string theory doesn't add our universe with its three spatial and one temporal dimensions. String theory requires ten dimensions to figure out.
So, string theorists did calculations in model universes. then attempt to get obviate the six additional dimensions and describe our own universe But thus far , nobody has succeeded and no prediction of string theory has been proven in an experiment So, string theory didn't reveal the character of our universe. One could argue that during this case string theory really isn't useful in the least .
Science is all about experiments and predictions. If we will not do those, why should we bother with strings? It really is all about how we use it. Physics is predicated on maths. Two plus two makes four. this is often true regardless of how you are feeling about it. and therefore the maths in string theory does compute . That's why string theory remains useful.
Imagine that you simply want to create a cruise liner , but you simply have blueprints for alittle dinghy . There are many differences: the engine, the engine, the materials, the engine, the materials, the scale. But both things are fundamentally the same: Things that float. So, by studying the dinghy blueprints, you would possibly still learn something about the way to build a cruise liner eventually.
With string theory, we will attempt to answer some questions on quantum gravity that are puzzling physicists for many years . like how black holes work or the knowledge paradox. String theory may point us within the right direction. When utilized in this spirit, string theory becomes a precious tool for theoretical physicists and help them discover new aspects of the quantum world and a few beautiful mathematics.
So, maybe the story of string theory isn't the idea of everything. But a bit like the story of the purpose particle, it's going to be a particularly useful story. we do not yet know what truth nature of reality is but we'll keep arising with stories to undertake and determine . Until at some point , Until at some point , hopefully Until at some point , hopefully, we do it.
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