Thanks to friends, a wonderful movie fell into the hands, an excerpt from which is shown below.
[A: Notice the old-empire domes and pawns/vases at the top. Russians claim (maps) the Tartarians were also active in both americas ...Ed ]
I strongly recommend viewing it in full
As if you are immersed in another world, and discover a lot of useful things. This is just the main shopping street of San Francisco in 1906. Once wrote an article about wireless trams, and caused a flurry of emotions of readers, both distant and not quite distant from this topic. And even some have convinced me that this is either a cable car or food coming to the tram through a third rail located in the middle. In the video it is clearly visible.
Well, now, while watching the video, fix two points: a) the length of the path (about 5 km), and b) how many such identical trams passed during the shooting on an opposite trip. The cable car disappears immediately, because trams on an opposite line go at different distances, and it happens that they go almost as a train, very close to each other. And there is a photo from 1906, after the earthquake. You can clearly see the usual sleepers without holes in the middle.
And if there was a direct current on the rails, what power should it have been to pull so many trams?
With an average tram power of 50 kW, their number on the line is 20 pcs and the conditional supply voltage of 50 V, the current in the rails would be 20 kA (!). With the resistance of the tram rail 190 Ohm / km (without joints), with such a current, it would be white-hot. This is nonsense and the power scheme was different. And the trams are clearly not 20, but much more. We immediately discard the versions with batteries, the third rail was clearly not done for this. If you look at the video more closely, you can see that the tram line is crossed by ordinary trolleybuses with a classic current collector. And there are only one type of tram going along the whole line, similar as twins. What, this line served only to carry passengers in one direction? May be.
Try, before reading further, to see in the video the secret of these trams, it is there (the spoiler is not wireless poles, although there are too many there).
The rails come to a dead end and run into a small inconspicuous structure with columns and vases on them. And if you rewind a little bit back and see in perspective, then
Oops... And on the chapel and on the tram there were vases with an incomprehensible substance, and at the same elevation. Another coincidence? Of course not. And where is the similarity with plumbing? Probably, it has already reached everyone that there and there, in the earth or on the earth are iron conductors. Only in the case of a tram it is the rails, and in the case of the water supply it is a pipe. Still not believe in the existence of perpetual motion a little more than a hundred years ago? Then forward to the materiel.
As you know, tram wheels located on the same axis are technically very difficult to isolate from each other. During operation, the quality of this insulation would deteriorate significantly over time. Well, and probably the most sensible solution in this matter was the creation of a third rail. But what about these rails? Imagine some kind of scheme.
For example, the metal connection of the chapel from the exit to the rails makes a break and connects from one side to the central rail and from the other to the side rails. If a current was induced at the bottom of the dome, then it passed through the tram along a blue conductor. Thus, in the chapel some kind of removed columns are created in the form of each tram, or two columns with vases on the tram. The current flowing through the blue conductor induced a kind of field in these vases, which in turn created a current in the secondary, green conductor. An analogy suggests itself with a vacuum triode or transistor, where an atmospheric resource is used as a power source. Is it possible in principle? Well, if the trams went, then perhaps it was possible, and since such power supply schemes for trams disappeared in 10 years worldwide, then it is generally the most accurate indicator of correctness of reasoning. But what we then served on the track circuit? As you can see, the path of the tram, albeit in a straight line, was very long. Sustaining an ideal vertical layout in this way is impossible by definition. But, with the appearance of a usual puddle in any place between the rails, the trams would at least stand up immediately if there was a normal electric current in the rails. This option disappears. What was there? Actually, the answer again gives etymology. Why do we still have the term "electric current"? There was once a "current", but for some reason it has already disappeared almost from everywhere. But the electric current is present. Is he maybe not just electric? Maybe as we see. The time has come to revive the term "magnetic current", it is also an etheric current, it is also magnetism, it's cold electricity. To deny his existence is at least silly.
The condition for the flow of this current is the best magnetic permeability of materials. And this current is absolutely not afraid of puddles, damp ground around and other undesirable manifestations that do not impair the magnetic permeability of the conductors. The distance that this current can be transmitted is how much iron is enough for the structure, at least for the rails, at least for the pipes. And what was in the green conductor? Yes, everything is simple. Imagine that a thick conductor at the edges of a tram, circled in green, was situationally located at the epicenter of the etheric crater created by the vases on the tram's roof. Well, after that, everything is in accordance with the rule of the gimlet, and the usual collector engine coped with the load very well, not worsening the magnetic permeability of conductors.
Could such a small chapel create a magnetic current for so many trams? Of course not. This chapel is connected by metal bonding with a tower, which can be clearly seen in the foreground in the video. This is the place of the famous trade fair. Trams were being made simultaneously with this tower and for this tower in order to provide an influx of people to it. At that time it was very common (read about amusement parks and other large-scale entertainment facilities). And even these trams were free. As you can see, in the video, our tramway is crossed by ordinary trolleybuses with current collectors, used now. Everything is logical. As soon as, by the wave of someone's hands, the exhibitions disappeared (there were reasons), similar trams to them have disappeared, and the trolley buses remained. Oddly enough, in a short period of time, amusement parks burned down, all municipal institutions around the world switched to gas or collective electricity, and the Russian Empire with its factories and temples disappeared altogether. An interesting coincidence.
[ Dear friends, I don't understand what 'tech_dancer' is getting at here. Please help me out in the Comments section below ...Ed ]
[G: How and Where does the official Cable and official Grip mechanism fit below the third rail? ...Ed ]
This is also San Francisco, only after the earthquake of 1906. Especially for you increased one place. The fact that these rails were for three wheels, and not for cables and not for ordinary electricity, for me personally, does not cause any doubt. Try to imagine how the cable would behave in the hollow, which is in front, if there would be a tram on the tops of the hills. I understand everything, but the facts are stupid things. Keep criticizing.