Recent content by Larry717
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Undergrad The attraction of light by gravity
The Effect of Gravity on Light I once read that light is slowed down by a gravitational field. Later, I read that spacetime contorts and c remains the same. Which is true? L.A.- Larry717
- Post #4
- Forum: Special and General Relativity
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Graduate There is no gravitational dipole
Repelled by the Earth In a previous post, two references were cited. One indicated that the gravitomagnetic charge was the source of gravitomagnetism. The other argued that the gravitomagnetic charge was analogous to a magnetic monopole in electrodynamics. Since gravitomagnetic poles do...- Larry717
- Post #30
- Forum: Special and General Relativity
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Graduate There is no gravitational dipole
Paradox? arxiv.org/pdf/gr-qc/0301100 [It is] interesting to consider gravitomagnetic charge which is the source of gravitomagnetic field just as mass (gravitoelectric charge) is the source of gravitoelectric field (Newtonian gravitational field)...- Larry717
- Post #29
- Forum: Special and General Relativity
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Graduate There is no gravitational dipole
For Easy Reference APPENDIX-- SI (MKS) Dimensisons of the Gravitomagnetic Field. Mass Current = Kg/Sec = (Weber/Meter)(Coul/Meter) Gravitomagnetic Dipole Moment = (Kg)(Meter-Squared)/Sec = Angular Momentum = (Coulomb)(Weber) Gravitomagnetic Charge = (Velocity)(Meter) =...- Larry717
- Post #25
- Forum: Special and General Relativity
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Graduate There is no gravitational dipole
What about 0 < d < 1 ? (inverse square law) The formula in Gaussian units describing the force between two coupled bar magnets (d=0 between the opposite poles) is: F = 2pi M M' A The same formula can be converted to MKSA units, and after the smoke clears, is: F = k P1 P2 / A...- Larry717
- Post #21
- Forum: Special and General Relativity
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Graduate There is no gravitational dipole
Solution? Finite force between poles The force at zero distance between point poles would be infinite, although all available bar magnets have some size and so you can never get to zero distance between the poles of coupled bar magnets. The force gradient between the poles...- Larry717
- Post #19
- Forum: Special and General Relativity
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Graduate There is no gravitational dipole
Details about my posts My first post is titled, "Gravitomagnetic Poles" in the Gravitomagnetism thread. The second is titled, "Plenty of Resources Available." If you continue through the thread you will see some comments to my posts. I don't put the word Gravitomagnetism in the...- Larry717
- Post #18
- Forum: Special and General Relativity
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Graduate There is no gravitational dipole
Looking for a Finite Force For those who are new to my posts on magnetic poles and gravitomagnetic poles please review them carefully along with the comments by other authors. I am not going to summarize them here. As I have shown before, the line of reasoning concerning magnetic...- Larry717
- Post #16
- Forum: Special and General Relativity
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Graduate There is no gravitational dipole
Inverse Square Law Previously, the force between the poles of two different bar magnets was given as: F = k P1 P2 / d^2 (magnitude only). The poles are fictitious because they are not independent entities. It was shown that like magnetic poles, there are also (fictitious)...- Larry717
- Post #14
- Forum: Special and General Relativity
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Graduate There is no gravitational dipole
Plenty of Resources Available The equation, F = k P1 P2 / d^2, contains fictitious sources that lead to a real force. There is no mention of a field, dipole or otherwise. As you can see the poles of two bar magnets, P1 and P2, are treated like charges in Coulomb's law. Thus, the force...- Larry717
- Post #11
- Forum: Special and General Relativity
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Graduate There is no gravitational dipole
Gravitomagnetic Poles Magnetic Poles and Gravitomagnetic Poles While magnetic poles are fictitious, they can be used in calculations to determine the force between two bar magnets. The general formula for the force between two bar magnets is: F = (k P1 P2) / d^2 where k is the...- Larry717
- Post #9
- Forum: Special and General Relativity
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Graduate Room Temperature Superconductivity
I Guess We'll Never Know Since Vahldiek works for the Air Force, and his work is not public, I guess we'll never know. Larry- Larry717
- Post #13
- Forum: Other Physics Topics
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Undergrad Angular Frequency, Time, and Angle
Clarification To illustrate more clearly what I'm after I'd like to switch from units in radians to units in degrees. Given theta = 1085 deg. n = 1085/360 = 3.0138889 phi = 360(n-3) = 5 deg. cos(phi) = cos(theta) Now, are the angles 5 deg. and 1085 deg. equivalent? Larry- Larry717
- Post #7
- Forum: Electromagnetism
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Undergrad Angular Frequency, Time, and Angle
Getting Closer! If I understand you correctly, you are saying that an argument of any size is ok. Isn't there an algorithm that can be done by hand or by computer program that can take an agument of any size (an angle of any size) and reduce it to an angle between 0 and 2pi? Recall...- Larry717
- Post #5
- Forum: Electromagnetism
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Undergrad Angular Frequency, Time, and Angle
Taking this a step further Ken, Thanks for reviewing the basics about frequency, period, and angle. I still need some help with angles larger than 2pi. Take the equation for a sinusoidally varying electric field: E = Eo cos(2pift) In the above, t doesn't have to be the period...- Larry717
- Post #3
- Forum: Electromagnetism