Recent content by Redhat

I'm not sure what you mean by "static" current. Are electrons moving in the loop?

I put the word "fundamental" in quotes because is really a matter of symmantics not some absolute truth. Remember, in 1905 the concept of electrons as we know them today didn't exist. Thompson received the Nobel prize in 1906 for his lecture describing cathode "rays" as point like charged...

I didn't forget them. They are just not monopoles. There is no analog of a point charge for magnetism. There are analogs between magnetic and electric "loops" though. The neutron is not an elementary particle. I believe that its the constituent quarks that are interacting with a magnetic...

Hi Claude, Do you mean this paper?: http://www.fourmilab.ch/etexts/einstein/specrel/www/ Philosophically this may be true but since magnetism relies on relative motion (a changing E field) whereas charge is invariant one could easily argue between the two, that electricity is more...

Alternatively, the moving charge q sees an increase in the charge of the oppositely charged ionic lattice of the other wire. Since q is moving it "sees" the wire's length contract due to SR which increases the wire's ionic lattice's charge density. The difference in charge density creates...

The electric field must change or current must flow to create magnetism. The E field and current density are vectors so they can change either magnitude or direction. The curl of a magnetic field is related to the time rate of change of an electric field plus any current flowing. Imagine...

Resolved: The laws of Coulomb versus Ampere and the electromagnetic Machian "paradox" The apparent paradox of the parallel moving charged particles (rods) being attracted to each other from a force related to some specific velocity (violating common sense requirement of non specific reference...

Except that it doesn't. Hans Christian Oersted discovered in 1820 that two parallel wires carrying current in the same direction attract each other. The charges in the wires are always moving less than the speed of light. If the current in the wires were zero, there would be no magnetic...

Interesting speculation... Have you read the Sci. Am. special edition's (vol. 16, no.1 2006 -- "A Matter of Time") article: "Inconstant Constants" by Barrow and Webb ? Among other things, they describe how slightly tweaking the fine structure constant would vastly change "the" universe...

Since the electric force is independent of velocity whereas the magnetic force increases with velocity, the distance at which the two forces balance would be dependent on velocity. If my figurin' is correct, the distance apart where they should balance is: d = lo((1-(v/c)^2)^.5)/(2 x...

The laws of Coulomb versus Ampere and the electromagnetic Machian "paradox" Here's an apparent paradox that has been tunneling about in my little mind lately. Maybe someone out there can help me with it. Imagine if you will, a vast empty region of space devoid of any visible distant...

Sorry for being unclear. First let me describe the apparatus better. I kind of rushed through it before. Consider a very massive cylinder rotating very fast within a stationary balanced cage containing freely rotating gyroscopes positioned very close to the inside and the outside of the...

Hi, I was thinking about an experiment that might demonstrate frame dragging via the equivalence principle. The apparatus consists of a rotating massive cylindrical shell within a vacuum. Near the inside and the outside of the shell exist two gyroscopes with their axis both...

Yes! Although I would say that all the Hawking radiation should be considered “exhaust”. Maybe SciFi Engineering could get the photon sphere (or ellipsoid) to re-capture that energy and increase the efficiency. Kind of an inertial drive “turbo-charger” ... BTW: In case anybody’s...

Well, I thought about that too and resolved it this way. The Hawking radiation is originating from the black hole’s event horizon and not from the ship itself so an overall change in momentum of the system would result from that difference. An analogy: In a "vast" region of space there exit...