Above the 'north' pole of the Sun that is. Things get interesting when we consider the axial tilts and rotations of the individual planets.
This animation may set your head in a spin! A Brilliant Animation Showing the Rotation Speed and Axial Tilts of the Planets in Our Solar System
Oh yes, it's Uranus that breaks the rules, isn't it. Probably collided with some other huge lump years ago. Winter lasts about 42 years on that ball of gas.
Amazing that Herschel spotted it from his back garden in Bath, Somerset in 1781. Not many street lights then!
I was scratching my head over the neutral Kaon today:
CP violation - Wikipedia
I used to understand that stuff. But it plain loses me now. It's to do with the second and more massive generation of Quarks known as Strange and Charmed, which are exotic stuff in our Universe. Produced by high energy cosmic rays in our atmosphere. CP violation occurs under the weak interaction which governs Nuclear Fission.
Amazing that Herschel spotted it from his back garden in Bath, Somerset in 1781. Not many street lights then!
I was scratching my head over the neutral Kaon today:
CP violation - Wikipedia
I used to understand that stuff. But it plain loses me now. It's to do with the second and more massive generation of Quarks known as Strange and Charmed, which are exotic stuff in our Universe. Produced by high energy cosmic rays in our atmosphere. CP violation occurs under the weak interaction which governs Nuclear Fission.
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Talking of spin, that is what the 'P' in 'CP violation' is concerned with!
The theoretical symmetry between matter and antimatter is known as CP. If nature treated matter and antimatter alike, then nature would be CP-symmetric. If not, CP is violated.
The initals CP are short for Charge conjugation and Parity.
C is the symmetry between positive and negative charge. C reverses the charge, meaning that a particle with positive charge will then have negative charge, and vice versa.
P is the symmetry which transforms left-handed particles to right-handed ones. It is the direction in which the particle spins with respect to its direction of motion that determines whether it is left-handed or right-handed.
Any deviation from the above symmetries is called CP violation, and that's about all that could be explained in this thread without resorting to an advanced particle physics textbook!
The theoretical symmetry between matter and antimatter is known as CP. If nature treated matter and antimatter alike, then nature would be CP-symmetric. If not, CP is violated.
The initals CP are short for Charge conjugation and Parity.
C is the symmetry between positive and negative charge. C reverses the charge, meaning that a particle with positive charge will then have negative charge, and vice versa.
P is the symmetry which transforms left-handed particles to right-handed ones. It is the direction in which the particle spins with respect to its direction of motion that determines whether it is left-handed or right-handed.
Any deviation from the above symmetries is called CP violation, and that's about all that could be explained in this thread without resorting to an advanced particle physics textbook!
Spin is actually one of my strong suits.
In three dimensions we are used to the idea of spin about an axis.
It just doesn't work like that in four dimensions.
Tesseract - Wikipedia
Why should we care? Because we live in a four dimensional Space-Time. Er, unless you buy String Theory...
In four dimensions, there is no axis. Only rotation about a plane. Spin is more complicated than we tend to think. For all that, I concur with Richard Feynman. We have no idea what even a simple Electron looks like. Never mind what the half unit of Electron Spin actually is. What we know is it gets back to the start after TWO rotations of 360 degrees.
In three dimensions we are used to the idea of spin about an axis.
It just doesn't work like that in four dimensions.
Tesseract - Wikipedia
Why should we care? Because we live in a four dimensional Space-Time. Er, unless you buy String Theory...
In four dimensions, there is no axis. Only rotation about a plane. Spin is more complicated than we tend to think. For all that, I concur with Richard Feynman. We have no idea what even a simple Electron looks like. Never mind what the half unit of Electron Spin actually is. What we know is it gets back to the start after TWO rotations of 360 degrees.
Your link took me to '-And He Built a Crooked House-' by Robert A. Heinlein.
I'm a big fan of his science fiction writings! "—And He Built a Crooked House—" - Wikipedia
I'm a big fan of his science fiction writings! "—And He Built a Crooked House—" - Wikipedia
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2:11 am Galu?
Do you ever sleep?
Nice animation System7 - but I do wonder sometimes if these animations, and the underlying math, simply explain our (ie human) interpretation of what we think something looks like and not neccessarily reality which is sort of what Feynman would have been alluding to.
Do you ever sleep?
Nice animation System7 - but I do wonder sometimes if these animations, and the underlying math, simply explain our (ie human) interpretation of what we think something looks like and not neccessarily reality which is sort of what Feynman would have been alluding to.
211 is the California Police crime code for Robbery.
It's also the 211 London bus that goes from Waterloo (not the Battle..) to Hammersmith.
The one I have been trying to track down for years is something I seem to recall was called "Messing with the Chid".
Briefly, Mankind rocks up on some Planet. The native Chid people who are about 7' tall and very muscled will leave you alone if you leave them alone. Local human advice is just to leave the native Chid alone.
Of course, there's always one who wants to break the rules. So when the Chid turn up at the local watering hole, he gets in their way. He ends up as a dead, bloody pulp.
Later, somebody finds his body and pronounces that: "That is what you get for messing with the Chid!
Did I dream that short story, or was it real? It resonates with the World's most popular podcast: Behind 'The Case of the Missing Hit' Episode of 'Reply All' - Rolling Stone.
"The Case of the missing Hit" podcast is absorbing. A Detective story really. Highly recommended because it comes to a satisfactory conclusion.
We'll get back to Physics in a Mo.
It's also the 211 London bus that goes from Waterloo (not the Battle..) to Hammersmith.
I must be the World's greatest erstwhile consumer of Science Fiction. I saw Asimov's "Foundation" trilogy in my local junkshop recently. About £3. I was SO tempted!
The one I have been trying to track down for years is something I seem to recall was called "Messing with the Chid".
Briefly, Mankind rocks up on some Planet. The native Chid people who are about 7' tall and very muscled will leave you alone if you leave them alone. Local human advice is just to leave the native Chid alone.
Of course, there's always one who wants to break the rules. So when the Chid turn up at the local watering hole, he gets in their way. He ends up as a dead, bloody pulp.
Later, somebody finds his body and pronounces that: "That is what you get for messing with the Chid!
Did I dream that short story, or was it real? It resonates with the World's most popular podcast: Behind 'The Case of the Missing Hit' Episode of 'Reply All' - Rolling Stone.
"The Case of the missing Hit" podcast is absorbing. A Detective story really. Highly recommended because it comes to a satisfactory conclusion.
We'll get back to Physics in a Mo.
The idea of faster than light travel is part of our old way of thinking. Looking at it from another point of view , light and its velocity may have nothing to do with it.
There's a Barrington J. Bayley short story called "Sporting with the Chid" in the collection entitled "The Seed of Evil".
The full text is available here: The Seed of Evil - Barrington J. Bayley - Google Books
Your link deals with 'quantum entanglement'. When two particles are in an entangled state, changing the properties of one of them instantly changes the properties of the other, regardless of how far they are apart. It doesn't matter that it would require a signal to travel faster than light to produce such a result!
Physicists at the University of Glasgow have captured the world's first photo of quantum entanglement. Scientists Just Unveiled The First-Ever Photo of Quantum Entanglement
Quantum mechanics, dontcha just love it!
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Galu, you are a flippin' AUTHORITY on Science Fiction.
That Barrington J. Bailey story "Sporting with the Chid" is the one!
It's not quite how I remember it, and we don't get the whole story in that link, But at least it happened. Bit like the Rolling Stone "The Case of the missing Hit" podcast I recommended: Behind 'The Case of the Missing Hit' Episode of 'Reply All' - Rolling Stone
Anybody remember Philip K Dick writing that novel and movie "Bladerunner"? It's not what he wanted to do, but nobody bought Mary and the Giant. But his 1950's hometown, America novels were actually way stranger than any Science Fiction he wrote.
Back to the Physics. Quantum Entanglement is just so much misunderstanding and Hooey, IMO. As is faster than light travel. Nothing goes faster than Light. How it is.
That Barrington J. Bailey story "Sporting with the Chid" is the one!
It's not quite how I remember it, and we don't get the whole story in that link, But at least it happened. Bit like the Rolling Stone "The Case of the missing Hit" podcast I recommended: Behind 'The Case of the Missing Hit' Episode of 'Reply All' - Rolling Stone
Anybody remember Philip K Dick writing that novel and movie "Bladerunner"? It's not what he wanted to do, but nobody bought Mary and the Giant. But his 1950's hometown, America novels were actually way stranger than any Science Fiction he wrote.
Back to the Physics. Quantum Entanglement is just so much misunderstanding and Hooey, IMO. As is faster than light travel. Nothing goes faster than Light. How it is.
Could something move faster than light?
I have been thinking about it for quite some time. Imagine a star and a planet rotating around it. Now an observer at a certain distance could see the shadow of the planet. Another observer also at the same distance, but at the opposing direction from the star, will also see the shadow of the planet later, depending on how fast the planet revolves. The shadow travels along on an imaginery circle with a certain velocity. If the planet revolves fast enough, and the observers are far enough, the velocity of the shadow will exceed the speed of light. (You can substitute shadow with light beam).
I have been thinking about it for quite some time. Imagine a star and a planet rotating around it. Now an observer at a certain distance could see the shadow of the planet. Another observer also at the same distance, but at the opposing direction from the star, will also see the shadow of the planet later, depending on how fast the planet revolves. The shadow travels along on an imaginery circle with a certain velocity. If the planet revolves fast enough, and the observers are far enough, the velocity of the shadow will exceed the speed of light. (You can substitute shadow with light beam).
'Do Androids Dream of Electric Sheep?' was the novel.
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AFAIK, Philip K Dick was interested in the question of "What is it to be an authentic Human Being?".
In that awesome Movie, "Bladerunner", the Cop guy played by Harrison Ford starts to realise that the Robot replicants might be more Human than he is.
YouTube
Never mind that he is smitten by an attractive replicant himself!
Rutger Hauer adlibbed this scene. Interestingly infested by those terrible Pigeons. But Bravo, anyway!
In that awesome Movie, "Bladerunner", the Cop guy played by Harrison Ford starts to realise that the Robot replicants might be more Human than he is.
YouTube
Never mind that he is smitten by an attractive replicant himself!
Rutger Hauer adlibbed this scene. Interestingly infested by those terrible Pigeons. But Bravo, anyway!
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