- #1
Ronnu
- 7
- 0
Hey
I got a little imaginary experiment which is little bit confusing to me. Maybe somebody with knowledge in signal transmitting or just good knowledge of physics can help me out.
So let's say there are two parallel conductors which length is endless and resistance is zero (no losses and voltage and current are in phase with each other). One of the conductors will be connected to a signal generator which creates a single impulse which then travels along the conductor. The impulse length is a lot smaller than the distance between the parallel conductors.
The impulse that travels along one of the conductors (let's say conductor nr. 1) can be looked as a moving charge. We know that a moving charge generates magnetic field around it and that this magnetic field wave propagates perpendicular to the conductor and with the speed of light. So in some time it will propagate to the other conductor (nr. 2 ) which is next to the propagating conductor (nr. 1). According to the induction law it will generate a voltage or in another word the same impulse (although with a smaller amplitude) that was flowing in the conductor number one.
This generated impulse will start to travel along that conductor also with the speed of light. So it should be that this generated impulse is always in phase with a magnetic field that is generated by the conductor nr. 1 and that reaches conductor nr. 2. From that it should be that the amplitude of the generated impulse in conductor nr. 2 is increasing as it travels down the conductor (magnetic field that passes through the conductor induces voltages and there are no losses). This is where I get lost, because if the conductors length is endless then the amplitude will increase endlessly and that cannot be. So what am I missing?
I got a little imaginary experiment which is little bit confusing to me. Maybe somebody with knowledge in signal transmitting or just good knowledge of physics can help me out.
So let's say there are two parallel conductors which length is endless and resistance is zero (no losses and voltage and current are in phase with each other). One of the conductors will be connected to a signal generator which creates a single impulse which then travels along the conductor. The impulse length is a lot smaller than the distance between the parallel conductors.
The impulse that travels along one of the conductors (let's say conductor nr. 1) can be looked as a moving charge. We know that a moving charge generates magnetic field around it and that this magnetic field wave propagates perpendicular to the conductor and with the speed of light. So in some time it will propagate to the other conductor (nr. 2 ) which is next to the propagating conductor (nr. 1). According to the induction law it will generate a voltage or in another word the same impulse (although with a smaller amplitude) that was flowing in the conductor number one.
This generated impulse will start to travel along that conductor also with the speed of light. So it should be that this generated impulse is always in phase with a magnetic field that is generated by the conductor nr. 1 and that reaches conductor nr. 2. From that it should be that the amplitude of the generated impulse in conductor nr. 2 is increasing as it travels down the conductor (magnetic field that passes through the conductor induces voltages and there are no losses). This is where I get lost, because if the conductors length is endless then the amplitude will increase endlessly and that cannot be. So what am I missing?