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Post by osnafrank on Feb 23, 2021 20:18:28 GMT
Hi mary
Introduction to quantum mechanics.
Quantum mechanics is a physical science dealing with the behaviour of matter and energy on the scale of atoms and subatomic particles / waves.
The term "quantum mechanics" was first coined by Max Born in 1924.
The acceptance by the general physics community of quantum mechanics is due to its accurate prediction of the physical behaviour of systems, including systems where Newtonian mechanics fails.
The foundations of quantum mechanics date from the early 1800s, but the real beginnings of QM date from the work of Max Planck in 1900.
Albert Einstein and Niels Bohr soon made important contributions to what is now called the "old quantum theory."
However, it was not until 1924 that a more complete picture emerged with Louis de Broglie's matter-wave hypothesis and the true importance of quantum mechanics became clear.
Some of the most prominent scientists to contribute in the mid-1920s to what is now called the "new quantum mechanics" or "new physics" were Max Born, Werner Heisenberg(Wormhole or Einstein/Rosen Bridge), Wolfgang Pauli, and Erwin Schrödinger, (Yap, that guy with the Cat)
Quantum physics underlies how atoms work, and so why chemistry and biology work as they do. You, me and the gatepost – at some level at least, we’re all dancing to the quantum tune. If you want to explain how electrons move through a computer chip, how photons of light get turned to electrical current in a solar panel or amplify themselves in a laser, or even just how the sun keeps burning, you’ll need to use quantum physics.
The difficulty – and, for physicists, the fun – starts here. To begin with, there’s no single quantum theory. There’s quantum mechanics, the basic mathematical framework that underpins it all, which was first developed in the 1920s by Niels Bohr, Werner Heisenberg, Erwin Schrödinger and others. It characterises simple things such as how the position or momentum of a single particle or group of few particles changes over time.
But to understand how things work in the real world, quantum mechanics must be combined with other elements of physics – principally, Albert Einstein’s special theory of relativity, which explains what happens when things move very fast – to create what are known as quantum field theories.
Three different quantum field theories deal with three of the four fundamental forces by which matter interacts: electromagnetism, which explains how atoms hold together; the strong nuclear force, which explains the stability of the nucleus at the heart of the atom; and the weak nuclear force, which explains why some atoms undergo radioactive decay.
Over the past five decades or so these three theories have been brought together in a ramshackle coalition known as the “standard model” of particle physics. For all the impression that this model is slightly held together with sticky tape, it is the most accurately tested picture of matter’s basic working that’s ever been devised. Its crowning glory came in 2012 with the discovery of the Higgs boson, the particle that gives all other fundamental particles their mass, whose existence was predicted on the basis of quantum field theories as far back as 1964.
Conventional quantum field theories work well in describing the results of experiments at high-energy particle smashers such as CERN’s Large Hadron Collider, where the Higgs was discovered, which probe matter at its smallest scales. But if you want to understand how things work in many less esoteric situations – how electrons move or don’t move through a solid material and so make a material a metal, an insulator or a semiconductor, for example – things get even more complex.
The billions upon billions of interactions in these crowded environments require the development of “effective field theories” that gloss over some of the gory details. The difficulty in constructing such theories is why many important questions in solid-state physics remain unresolved – for instance why at low temperatures some materials are superconductors that allow current without electrical resistance, and why we can’t get this trick to work at room temperature.
But beneath all these practical problems lies a huge quantum mystery. At a basic level, quantum physics predicts very strange things about how matter works that are completely at odds with how things seem to work in the real world. Quantum particles can behave like particles, located in a single place; or they can act like waves, distributed all over space or in several places at once. How they appear seems to depend on how we choose to measure them, and before we measure they seem to have no definite properties at all – leading us to a fundamental conundrum about the nature of basic reality.
This fuzziness leads to apparent paradoxes such as Schrödinger’s cat, in which thanks to an uncertain quantum process a cat is left dead and alive at the same time. But that’s not all. Quantum particles also seem to be able to affect each other instantaneously even when they are far away from each other. This truly bamboozling phenomenon is known as entanglement, or, in a phrase coined by Einstein (a great critic of quantum theory), “spooky action at a distance”. Such quantum powers are completely foreign to us, yet are the basis of emerging technologies such as ultra-secure quantum cryptography and ultra-powerful quantum computing.
Enjoy the Show.
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Post by wolf on Feb 23, 2021 20:25:37 GMT
Wuff...AawWwRrrrrrsome....
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Post by osnafrank on Feb 23, 2021 20:46:20 GMT
Wuff...AawWwRrrrrrsome.... I only know the basics, I don't pretend to understand Quantum Physics, much wiser people can't explain its complexity.
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Post by wolf on Feb 23, 2021 20:53:32 GMT
Wuff...AawWwRrrrrrsome.... I only know the basics, I don't pretend to understand Quantum Physics, much wiser people can't explain its complexity. You still got it goin' on Boss. ....going to read this again another few times.🙂
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Post by wolf on Feb 23, 2021 21:01:23 GMT
Wuff...AawWwRrrrrrsome.... I only know the basics, I don't pretend to understand Quantum Physics, much wiser people can't explain its complexity. ....and sign your work damnit! 🤨 😉
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Post by osnafrank on Feb 23, 2021 21:01:59 GMT
I only know the basics, I don't pretend to understand Quantum Physics, much wiser people can't explain its complexity. You still got it goin' on Boss. ....going to read this again another few times.🙂 This is a wonderful Book. "The Dreams That Stuff Is Made Of: The Most Astounding Papers of Quantum Physics--and How They Shook the Scientific World"
Written by Stephen Hawking.
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Post by wolf on Feb 23, 2021 22:11:05 GMT
You still got it goin' on Boss. ....going to read this again another few times.🙂 This is a wonderful Book. "The Dreams That Stuff Is Made Of: The Most Astounding Papers of Quantum Physics--and How They Shook the Scientific World"
Written by Stephen Hawking. Thanks for the heads up.
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Post by wolf on Mar 10, 2021 20:28:45 GMT
Hi mary
Introduction to quantum mechanics.
Quantum mechanics is a physical science dealing with the behaviour of matter and energy on the scale of atoms and subatomic particles / waves.
The term "quantum mechanics" was first coined by Max Born in 1924.
The acceptance by the general physics community of quantum mechanics is due to its accurate prediction of the physical behaviour of systems, including systems where Newtonian mechanics fails.
The foundations of quantum mechanics date from the early 1800s, but the real beginnings of QM date from the work of Max Planck in 1900.
Albert Einstein and Niels Bohr soon made important contributions to what is now called the "old quantum theory."
However, it was not until 1924 that a more complete picture emerged with Louis de Broglie's matter-wave hypothesis and the true importance of quantum mechanics became clear.
Some of the most prominent scientists to contribute in the mid-1920s to what is now called the "new quantum mechanics" or "new physics" were Max Born, Werner Heisenberg(Wormhole or Einstein/Rosen Bridge), Wolfgang Pauli, and Erwin Schrödinger, (Yap, that guy with the Cat)
Quantum physics underlies how atoms work, and so why chemistry and biology work as they do. You, me and the gatepost – at some level at least, we’re all dancing to the quantum tune. If you want to explain how electrons move through a computer chip, how photons of light get turned to electrical current in a solar panel or amplify themselves in a laser, or even just how the sun keeps burning, you’ll need to use quantum physics.
The difficulty – and, for physicists, the fun – starts here. To begin with, there’s no single quantum theory. There’s quantum mechanics, the basic mathematical framework that underpins it all, which was first developed in the 1920s by Niels Bohr, Werner Heisenberg, Erwin Schrödinger and others. It characterises simple things such as how the position or momentum of a single particle or group of few particles changes over time.
But to understand how things work in the real world, quantum mechanics must be combined with other elements of physics – principally, Albert Einstein’s special theory of relativity, which explains what happens when things move very fast – to create what are known as quantum field theories.
Three different quantum field theories deal with three of the four fundamental forces by which matter interacts: electromagnetism, which explains how atoms hold together; the strong nuclear force, which explains the stability of the nucleus at the heart of the atom; and the weak nuclear force, which explains why some atoms undergo radioactive decay.
Over the past five decades or so these three theories have been brought together in a ramshackle coalition known as the “standard model” of particle physics. For all the impression that this model is slightly held together with sticky tape, it is the most accurately tested picture of matter’s basic working that’s ever been devised. Its crowning glory came in 2012 with the discovery of the Higgs boson, the particle that gives all other fundamental particles their mass, whose existence was predicted on the basis of quantum field theories as far back as 1964.
Conventional quantum field theories work well in describing the results of experiments at high-energy particle smashers such as CERN’s Large Hadron Collider, where the Higgs was discovered, which probe matter at its smallest scales. But if you want to understand how things work in many less esoteric situations – how electrons move or don’t move through a solid material and so make a material a metal, an insulator or a semiconductor, for example – things get even more complex.
The billions upon billions of interactions in these crowded environments require the development of “effective field theories” that gloss over some of the gory details. The difficulty in constructing such theories is why many important questions in solid-state physics remain unresolved – for instance why at low temperatures some materials are superconductors that allow current without electrical resistance, and why we can’t get this trick to work at room temperature.
But beneath all these practical problems lies a huge quantum mystery. At a basic level, quantum physics predicts very strange things about how matter works that are completely at odds with how things seem to work in the real world. Quantum particles can behave like particles, located in a single place; or they can act like waves, distributed all over space or in several places at once. How they appear seems to depend on how we choose to measure them, and before we measure they seem to have no definite properties at all – leading us to a fundamental conundrum about the nature of basic reality.
This fuzziness leads to apparent paradoxes such as Schrödinger’s cat, in which thanks to an uncertain quantum process a cat is left dead and alive at the same time. But that’s not all. Quantum particles also seem to be able to affect each other instantaneously even when they are far away from each other. This truly bamboozling phenomenon is known as entanglement, or, in a phrase coined by Einstein (a great critic of quantum theory), “spooky action at a distance”. Such quantum powers are completely foreign to us, yet are the basis of emerging technologies such as ultra-secure quantum cryptography and ultra-powerful quantum computing.
Enjoy the Show. More please! 😊
mary!?...whatcha got? 😊
I wonder if @kurben , might have something to put here too. 🙂
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Deleted
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Post by Deleted on Mar 10, 2021 20:45:08 GMT
Hi mary
Introduction to quantum mechanics.
Quantum mechanics is a physical science dealing with the behaviour of matter and energy on the scale of atoms and subatomic particles / waves.
The term "quantum mechanics" was first coined by Max Born in 1924.
The acceptance by the general physics community of quantum mechanics is due to its accurate prediction of the physical behaviour of systems, including systems where Newtonian mechanics fails.
The foundations of quantum mechanics date from the early 1800s, but the real beginnings of QM date from the work of Max Planck in 1900.
Albert Einstein and Niels Bohr soon made important contributions to what is now called the "old quantum theory."
However, it was not until 1924 that a more complete picture emerged with Louis de Broglie's matter-wave hypothesis and the true importance of quantum mechanics became clear.
Some of the most prominent scientists to contribute in the mid-1920s to what is now called the "new quantum mechanics" or "new physics" were Max Born, Werner Heisenberg(Wormhole or Einstein/Rosen Bridge), Wolfgang Pauli, and Erwin Schrödinger, (Yap, that guy with the Cat)
Quantum physics underlies how atoms work, and so why chemistry and biology work as they do. You, me and the gatepost – at some level at least, we’re all dancing to the quantum tune. If you want to explain how electrons move through a computer chip, how photons of light get turned to electrical current in a solar panel or amplify themselves in a laser, or even just how the sun keeps burning, you’ll need to use quantum physics.
The difficulty – and, for physicists, the fun – starts here. To begin with, there’s no single quantum theory. There’s quantum mechanics, the basic mathematical framework that underpins it all, which was first developed in the 1920s by Niels Bohr, Werner Heisenberg, Erwin Schrödinger and others. It characterises simple things such as how the position or momentum of a single particle or group of few particles changes over time.
But to understand how things work in the real world, quantum mechanics must be combined with other elements of physics – principally, Albert Einstein’s special theory of relativity, which explains what happens when things move very fast – to create what are known as quantum field theories.
Three different quantum field theories deal with three of the four fundamental forces by which matter interacts: electromagnetism, which explains how atoms hold together; the strong nuclear force, which explains the stability of the nucleus at the heart of the atom; and the weak nuclear force, which explains why some atoms undergo radioactive decay.
Over the past five decades or so these three theories have been brought together in a ramshackle coalition known as the “standard model” of particle physics. For all the impression that this model is slightly held together with sticky tape, it is the most accurately tested picture of matter’s basic working that’s ever been devised. Its crowning glory came in 2012 with the discovery of the Higgs boson, the particle that gives all other fundamental particles their mass, whose existence was predicted on the basis of quantum field theories as far back as 1964.
Conventional quantum field theories work well in describing the results of experiments at high-energy particle smashers such as CERN’s Large Hadron Collider, where the Higgs was discovered, which probe matter at its smallest scales. But if you want to understand how things work in many less esoteric situations – how electrons move or don’t move through a solid material and so make a material a metal, an insulator or a semiconductor, for example – things get even more complex.
The billions upon billions of interactions in these crowded environments require the development of “effective field theories” that gloss over some of the gory details. The difficulty in constructing such theories is why many important questions in solid-state physics remain unresolved – for instance why at low temperatures some materials are superconductors that allow current without electrical resistance, and why we can’t get this trick to work at room temperature.
But beneath all these practical problems lies a huge quantum mystery. At a basic level, quantum physics predicts very strange things about how matter works that are completely at odds with how things seem to work in the real world. Quantum particles can behave like particles, located in a single place; or they can act like waves, distributed all over space or in several places at once. How they appear seems to depend on how we choose to measure them, and before we measure they seem to have no definite properties at all – leading us to a fundamental conundrum about the nature of basic reality.
This fuzziness leads to apparent paradoxes such as Schrödinger’s cat, in which thanks to an uncertain quantum process a cat is left dead and alive at the same time. But that’s not all. Quantum particles also seem to be able to affect each other instantaneously even when they are far away from each other. This truly bamboozling phenomenon is known as entanglement, or, in a phrase coined by Einstein (a great critic of quantum theory), “spooky action at a distance”. Such quantum powers are completely foreign to us, yet are the basis of emerging technologies such as ultra-secure quantum cryptography and ultra-powerful quantum computing.
Enjoy the Show. More please! 😊
mary !?...whatcha got? 😊
I wonder if @kurben , might have something to put here too. 🙂Not really. My understanding of it comes from reading A Brief History Of Time and The Grand Design by Stephen Hawking. Also Einsteins Universe by Nigel Calder. Hawking can really be recommended. He actually tries to make incomprehensible stuff be comprehensible and make a good job out of it. Other than that Quantum Physics make my head ache.....
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Post by wolf on Mar 10, 2021 20:53:37 GMT
More please! 😊
mary !?...whatcha got? 😊
I wonder if @kurben , might have something to put here too. 🙂 Not really. My understanding of it comes from reading A Brief History Of Time and The Grand Design by Stephen Hawking. Also Einsteins Universe by Nigel Calder. Hawking can really be recommended. He actually tries to make incomprehensible stuff be comprehensible and make a good job out of it. Other than that Quantum Physics make my head ache..... Okay Kurbie. Was just wondering. Thanks. I always liked Hawking too.🙂
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Post by wolf on Jun 4, 2021 0:04:34 GMT
....I'd like to see more submissions to this thread. 🙂
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Post by osnafrank on Jun 4, 2021 19:35:37 GMT
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Post by wolf on Jun 4, 2021 19:56:31 GMT
Thankee Commander! I'm going to read and check out that vid soon, (I really enjoy it all) you know I have to get all of my usual nonsense out of my system first.... 😆😉
I've thought about that 'Cat theory' a lot. I'm thinkin' I'm better off reading and watching and keeping my 'crazy cornbread' to myself.😄😉
Schrödinger's cat: a cat, a flask of poison, and a radioactive source are placed in a sealed box. If an internal monitor (e.g. Geiger counter) detects radioactivity (i.e. a single atom decaying), the flask is shattered, releasing the poison, which kills the cat. The Copenhagen interpretation of quantum mechanics implies that after a while, the cat is simultaneously alive and dead. Yet, when one looks in the box, one sees the cat either alive or dead, not both alive and dead. This poses the question of when exactly quantum superposition ends and reality resolves into one possibility or the other.
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Post by wolf on Jun 5, 2021 23:01:06 GMT
I like his coffee cup. Lol, that's a good one.😊
Honestly I think people think too hard about it. Over think it. It is not that unfathomable to me. Never has been. Lol, but we all know I'm no genius. 😊
(I suppose if the box ran out of air before the flask broke the cat would still be alive and dead at the same time for that infinitely miniscule amount of time. 😋😉 AND...it wasn't a real cat!?!? 😱 (gasp!)...I had no idea! 😳😜😝😉)
When it comes to over thinking things....I can't help but think of something that happened to a good friend I used to work with at the shop. He was only 36, but he had a stroke. For awhile his speech was impaired, but he could communicate pretty well. Thank God.... and thankfully that and other things improved over time.
Now, this is the part that he and I both found to be interesting and frustrating at the same time.... He was sitting around with us all, after work one Friday evening, and having a few beers. He and I were talking for a bit, and he was trying to explain to me what it was like for him.
He said "Watch" and he looked directly at his beer bottle sitting on the coffee table, and as concentrating on picking it up, he complained that it took a tremendous amount of effort to make his arm move and grasp the bottle. He fought with that and finally managed to pick it up and take a drink.
Then he said, "Now watch me later, when I am not thinking about it and trying to pick the bottle up." I got what he meant, and kept an eye on him....sure enough when he was talking to another person next to him, and his attention was fully on that person and what they were saying...he would just casually and very easily reach over without even looking, and pick that bottle up with no problem, just like he had never had the stroke.
I tapped his shoulder and smiled nodding, "I saw it, Daryl" I told him. He nodded enthusiastically, and said "See! That sh!t pisses me off!" then he laughed and got over it. He did recover from that eventually too.😊
That is what I always think of when "Over thinking something" comes up, especially over things like people trying to figure out and understand the Cat in the Box thing. 🙂
I don't know if that makes any sense to anyone but me....I got that strange imagination going on. Y'all know that. 😊
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Post by osnafrank on Nov 2, 2021 16:56:57 GMT
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Post by wolf on Jul 2, 2022 1:56:22 GMT
Hold up your hands and clap them together.
Wait one second, then do it again.
If you could plot the distance between the first clap and the second clap, it would be more than 800 kilometers.
This is because the Earth is moving around the sun, the sun is moving around the center of the galaxy, the galaxy is moving through the Virgo Supercluster, and the Virgo Supercluster is barreling through the universe. When you add up all the velocities and compare the result to the cosmic microwave background (which is the closest thing we have to a universal frame of reference), it comes out to about 800 kilometers per second.
In the time it took you to read this, you've traveled farther than you'll ever walk in your life. Alright...I KNOW I'm crazy and pretty much a dumbass....and this probably has nothing to with Shroeder's Cat...
...but it does remind me of it, for some reason.
I remember reading about this a long time ago, and thinking on it.
The last time I really thought about it, my sun was about 9. He was jumping up and down on the hardwood floor in the living room and whooping like a howler monkey, trying to make me nuts just for fun. (he was pissed at me, because he got grounded for something)
I wasn't going to let him get to me, so I just sat back and watched, listened, and patiently waited for him to tire himself out. He did. Eventually.
Every time he jumped up the air, and his feet were off the ground, and the all of him was suspended midair, I wondered how much of a micro millimeter of a millimeter, of probably another millimeter, the earth could have possibly moved beneath him, before his feet hit the ground again?
It also made me remember and contemplate something I had once read before....that glass is actually a liquid. But if you hung a mirror on a wall....you would have to watch it for millions upon millions of millenniums before you could ever start to see it even thinking about budging, and begin to drip down that wall.
Do you think I have my own STRANGE kind of logic, that might actually work in another dimension?
Doesn't EVERYBODY know the sky isn't always blue?
Why do Angel Fish have eyes that look like Master Po's and lanterns dangling from their foreheads at the same time?
Do you believe in 6 impossible things before breakfast every morning?
Do you think Albie E. would palm face, then slap the hell out of me if he heard half the crazy sh!t I think?
.....he probably would. I don't blame him.
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Post by wolf on Jul 2, 2022 3:01:21 GMT
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Post by wolf on Jul 2, 2022 3:04:36 GMT
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Post by osnafrank on Jul 2, 2022 12:12:53 GMT
Hold up your hands and clap them together.
Wait one second, then do it again.
If you could plot the distance between the first clap and the second clap, it would be more than 800 kilometers.
This is because the Earth is moving around the sun, the sun is moving around the center of the galaxy, the galaxy is moving through the Virgo Supercluster, and the Virgo Supercluster is barreling through the universe. When you add up all the velocities and compare the result to the cosmic microwave background (which is the closest thing we have to a universal frame of reference), it comes out to about 800 kilometers per second.
In the time it took you to read this, you've traveled farther than you'll ever walk in your life. Alright...I KNOW I'm crazy and pretty much a dumbass....and this probably has nothing to with Shroeder's Cat...
...but it does remind me of it, for some reason.
I remember reading about this a long time ago, and thinking on it.
The last time I really thought about it, my sun was about 9. He was jumping up and down on the hardwood floor in the living room and whooping like a howler monkey, trying to make me nuts just for fun. (he was pissed at me, because he got grounded for something)
I wasn't going to let him get to me, so I just sat back and watched, listened, and patiently waited for him to tire himself out. He did. Eventually.
Every time he jumped up the air, and his feet were off the ground, and the all of him was suspended midair, I wondered how much of a micro millimeter of a millimeter, of probably another millimeter, the earth could have possibly moved beneath him, before his feet hit the ground again?
It also made me remember and contemplate something I had once read before....that glass is actually a liquid. But if you hung a mirror on a wall....you would have to watch it for millions upon millions of millenniums before you could ever start to see it even thinking about budging, and begin to drip down that wall.
Do you think I have my own STRANGE kind of logic, that might actually work in another dimension?
Doesn't EVERYBODY know the sky isn't always blue?
Why do Angel Fish have eyes that look like Master Po's and lanterns dangling from their foreheads at the same time?
Do you believe in 6 impossible things before breakfast every morning?
Do you think Albie E. would palm face, then slap the hell out of me if he heard half the crazy sh!t I think?
.....he probably would. I don't blame him. I've once read, that when you jump, earth would move about a hundredth of the radius of a single hydrogen atom, but i don't recall how to calculate that.
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Post by wolf on Jul 2, 2022 15:29:07 GMT
Alright...I KNOW I'm crazy and pretty much a dumbass....and this probably has nothing to with Shroeder's Cat...
...but it does remind me of it, for some reason.
I remember reading about this a long time ago, and thinking on it.
The last time I really thought about it, my sun was about 9. He was jumping up and down on the hardwood floor in the living room and whooping like a howler monkey, trying to make me nuts just for fun. (he was pissed at me, because he got grounded for something)
I wasn't going to let him get to me, so I just sat back and watched, listened, and patiently waited for him to tire himself out. He did. Eventually.
Every time he jumped up the air, and his feet were off the ground, and the all of him was suspended midair, I wondered how much of a micro millimeter of a millimeter, of probably another millimeter, the earth could have possibly moved beneath him, before his feet hit the ground again?
It also made me remember and contemplate something I had once read before....that glass is actually a liquid. But if you hung a mirror on a wall....you would have to watch it for millions upon millions of millenniums before you could ever start to see it even thinking about budging, and begin to drip down that wall.
Do you think I have my own STRANGE kind of logic, that might actually work in another dimension?
Doesn't EVERYBODY know the sky isn't always blue?
Why do Angel Fish have eyes that look like Master Po's and lanterns dangling from their foreheads at the same time?
Do you believe in 6 impossible things before breakfast every morning?
Do you think Albie E. would palm face, then slap the hell out of me if he heard half the crazy sh!t I think?
.....he probably would. I don't blame him. I've once read, that when you jump, earth would move about a hundredth of the radius of a single hydrogen atom, but i don't recall how to calculate that. I figured it'd have to be some kind of crazy ridiculously small amount of space....like the amount of time that poor cat is still alive and dead at the same time. Thanks, Frank. 😊
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