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Question about gravity
On 15 maalis, 08:42, MicroTech wrote:
Can someone in this forum please help me sort out a confusing issue? Many scientists (including Einstein) claim that gravity is not a force, but the effect of mass on the "fabric of spacetime". Many other scientists refer to gravity as one of the four fundamental interactions (three, if one considers the unification of the weak and electromagnetic interactions, the "electroweak" force). Adding to the confusion, some scientists use both concepts with no apparent difficulty: Stephen Hawking (in his "A Brief History Of Time") first says that gravity is not a force, but "simply" the effect of mass on the "spacetime fabric" (making it "curve"). However, later in the book, he refers to gravity as a fundamental force, carried by the graviton. So what is gravity, "really"? Does anybody really know? Or do we just know its effects? Is it an attractive force "mutually pulling" the Earth towards the Sun (and vice versa), "causing" the Earth to "fall" towards the Sun? And due to the "forward motion" of the Earth, exactly matching the "gravitational pull", it stays in orbit (just like any other satellite, man-made or not); OR Is it the mass of the Sun that "curves spacetime", so no force is interacting with the Earth, it is just moving in a "straight line" along a "curved spacetime" geodesic? At my current level of understanding, gravity should be one or the other, and not both... If Einstein's concept of "curved spacetime" is "correct," where does the (hypothetical?) "graviton" (and/or "gravitino") enter the picture? References to published papers (accessible online) would be much appreciated! Henry Norman I have thought one possibility that origin of gravitational interaction could be "oscillation of size of neutrino´s signal periphery" What you think about this possibility? (Neutrinos are described as colored black holes in this H-M´s picture.) Best Regards, Hannu Poropudas |
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Question about gravity
On 16 maalis, 13:40, mathematician wrote:
On 15 maalis, 08:42, MicroTech wrote: Can someone in this forum please help me sort out a confusing issue? Many scientists (including Einstein) claim that gravity is not a force, but the effect of mass on the "fabric of spacetime". Many other scientists refer to gravity as one of the four fundamental interactions (three, if one considers the unification of the weak and electromagnetic interactions, the "electroweak" force). Adding to the confusion, some scientists use both concepts with no apparent difficulty: Stephen Hawking (in his "A Brief History Of Time") first says that gravity is not a force, but "simply" the effect of mass on the "spacetime fabric" (making it "curve"). However, later in the book, he refers to gravity as a fundamental force, carried by the graviton. So what is gravity, "really"? Does anybody really know? Or do we just know its effects? Is it an attractive force "mutually pulling" the Earth towards the Sun (and vice versa), "causing" the Earth to "fall" towards the Sun? And due to the "forward motion" of the Earth, exactly matching the "gravitational pull", it stays in orbit (just like any other satellite, man-made or not); OR Is it the mass of the Sun that "curves spacetime", so no force is interacting with the Earth, it is just moving in a "straight line" along a "curved spacetime" geodesic? At my current level of understanding, gravity should be one or the other, and not both... If Einstein's concept of "curved spacetime" is "correct," where does the (hypothetical?) "graviton" (and/or "gravitino") enter the picture? References to published papers (accessible online) would be much appreciated! Henry Norman I have thought one possibility that origin of gravitational interaction could be "oscillation of size of neutrino´s signal periphery" What you think about this possibility? (Neutrinos are described as colored black holes in this H-M´s picture.) Best Regards, Hannu Poropudas I would expect that different kind of "light particles" would be produced due oscillation of size of neutrino´s signal periphery. I would expect also that these "light particles" would also correspond different kind of waves. Please take a look my summary from year 1992 to 2009. Address of this more than 1500 ASCII text pages can be found from my profile page. (Question here is not ordinary photon and corresponding ordinary electromagnetic waves.) Hannu |
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Question about gravity
On 17 maalis, 10:13, mathematician wrote:
On 16 maalis, 13:40, mathematician wrote: On 15 maalis, 08:42, MicroTech wrote: Can someone in this forum please help me sort out a confusing issue? Many scientists (including Einstein) claim that gravity is not a force, but the effect of mass on the "fabric of spacetime". Many other scientists refer to gravity as one of the four fundamental interactions (three, if one considers the unification of the weak and electromagnetic interactions, the "electroweak" force). Adding to the confusion, some scientists use both concepts with no apparent difficulty: Stephen Hawking (in his "A Brief History Of Time") first says that gravity is not a force, but "simply" the effect of mass on the "spacetime fabric" (making it "curve"). However, later in the book, he refers to gravity as a fundamental force, carried by the graviton. So what is gravity, "really"? Does anybody really know? Or do we just know its effects? Is it an attractive force "mutually pulling" the Earth towards the Sun (and vice versa), "causing" the Earth to "fall" towards the Sun? And due to the "forward motion" of the Earth, exactly matching the "gravitational pull", it stays in orbit (just like any other satellite, man-made or not); OR Is it the mass of the Sun that "curves spacetime", so no force is interacting with the Earth, it is just moving in a "straight line" along a "curved spacetime" geodesic? At my current level of understanding, gravity should be one or the other, and not both... If Einstein's concept of "curved spacetime" is "correct," where does the (hypothetical?) "graviton" (and/or "gravitino") enter the picture? References to published papers (accessible online) would be much appreciated! Henry Norman I have thought one possibility that origin of gravitational interaction could be "oscillation of size of neutrino´s signal periphery" What you think about this possibility? (Neutrinos are described as colored black holes in this H-M´s picture.) Best Regards, Hannu Poropudas I would expect that different kind of "light particles" would be produced due oscillation of size of neutrino´s signal periphery. I would expect also that these "light particles" would also correspond different kind of waves. Please take a look my summary from year 1992 to 2009. Address of this more than 1500 ASCII text pages can be found from my profile page. (Question here is not ordinary photon and corresponding ordinary electromagnetic waves.) Hannu I would also expect that these light particles are not Higg´s particles W+- , Z0, H0 due these are composite in H-M´s picture. They are something presently unknown ? Hannu |
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