Questions about Nikola Tesla

Jan 22, 2007 21 Replies

Hi all,



here's a some questions I always wanted to ask electronics gurus. It's about Nikola Tesla and his inventions.



The first question is about the issue that some of his inventions were suppressed by authorities. For example the Wikipedia article on Tesla states that the after his death, the "his papers were declared to be top secret" and that the issues pertaining to his death were declared "most secret" by J. Edgar Hoover.



Does anyone know if the papers are classified as "top secret"? The Wikipedia article doesn't say if that status was ever removed from the papers..



The second question is about some of the inventions that were never finalized. Take for example the supposed Wardenclyffe tower, that was supposed to transmit electrical energy accross vast distances. If this would really work, why hasn't anyone attempted to build such a tower? Or even a smaller version (for shorter distances) using the same mechanism?



And then there are other inventions that are described in the various books about Tesla. Some of these seem only to be in schematic format but if they were great inventions, why don't we see the technology in wider use today?



After all, since Tesla died in 1943, his patents should have become public domain in 1993...or am I wrong here?



thanks in advance,



JJ



Patents are published matter even when they are in force.

Best source I can think of for US patents before the mid 1970's is:

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Please keep in mind that Tesla has some sort of a fan club that gives him credit for more than he could have possibly accomplished.

One example is that Tesla's Wardenclyffe tower was used to cause the "Tunguska Event". (That event is an explosion in Siberia in 1908.) Some like to blame/credit Tesla for that one.

Wikipedia has an article on the "Tunguska Event", debunking Tesla involvement, at:

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One item often mentioned by Tesla fans is that this was supposed to be an Arctic light show for Peary in his 1908 expedition, but it occurred 6 days before Peary left New York for that expedition.

The favored explanation is a large meteor (or small asteroid) of a softer but reasonably common type fragmenting/exploding many miles above ground. Runner-ups are other celestial objects with the main runner-up being a comet.

Another example is "Tesla waves" AKA "phi waves" or "potential waves". These are supposed to be waves that can travel faster than the speed of light by not being associated with mass.

Just have in mind that faster-than-light wave propagation is already well enough known. One example is potential as a function of time at various distances from, but always close to, a Tesla coil. A better-known one is "phase velocity" of microwaves in many waveguides. The latter is also associated with being a good example of information not moving faster than the speed of light even if the waves do. There is "phase velocity" (speed of gthe waves) and "group velocity" (speed of movement in a modulation of the wavetrain). In waveguides with phase velocity above the speed of light, the group velocity is slower than the speed of light.

Another example of phase vs. group velocities is in the wake of a passing boat. The wake has wavelets moving faster than the wavelet cluster. Wavelets form at the trailing edge of the cluster and scoot up only to die at the leading edge of the cluster.

As for potential waves in open space - an electric field is the gradient of the potential field - so potential fields and electric fields are tied together mathematically. So a potential wave cannot move faster than an electric field wave, and in open space (with distance from transmitter or receiver large compared to wavelength) electric field waves are only electromagnetic ones.

As for what the Wardenclyffe tower was made for: It was supposed to be a radio transmitter. One part of its functioning was to have high voltage high frequency AC (such as from a Tesla coil) form a large puff of corona at the top, to be a conductor that effectively extends the tower in height and radiator area. Another part of Wardenclyffe's function was to have the RF transmission being in a lower frequency range at which the ionosphere acts as a waveguide. Obviously enough, we now have radio transmitters working quite well with radiating elements made of metal rather than ionized air.

So please take tall claims of what Tesla did with some nice size chunks of salt!

- Don Klipstein ( snipped-for-privacy@misty.com)

ahh

That powerlines w/o cables is just one of many defending-inventions, the world has seen in the last centuries.

Similar to the heated runner on a snow-coach, invented some time before the WW-II ended. By German, with Jewish Religion.

Such things are just for showing the Producer how stupid he/she is :)

Nikola Tesla got his lessons with fat, barking american business men, very early :-)))))

Wireless Power, ts... what a joke. How? With a System based on wires and coils??

Best Regards,

Daniel Mandic

I agree with the poster before me, but I can't help being suspicious when a lot of his work is deemed as classified/top secret by the U.S. if a lot of his s*it didn't work, then why is it so secret?

But where are you getting the notion that it's "classified/top secret"?

Some people want to believe that, but that doesn't make it so.

And of course, it's easy to say things are being kept secret, since that explains why things aren't seen, but that doesn't mean the things actually existed in the first place.

Tesla created a lot of stuff. Some of it worked, some of it didn't. He dated from an age when people would get lots of patents, and I suspect an age when it was easier to get a patent. Hence, one could get patents on things that were either impractical or turned out to not work.

Think about it. Thomas Edison is credited with loads of patents, yet most of them never left a mark, and maybe didn't even mean much.

The way to prove to yourself the real "truth" is to start looking at Tesla's patents. You can look them up on the US Patent Office's website, I don't have the URL handy, though before a certain year (I think in the seventies) the patents are mere scans so much of the searches at that site don't work for older patents. But you can read them if you can figure out the patent numbers, I imagine a lot of traditional sources never included patent numbers since it used to be so difficult to look over patents, and then once you've worked your way through enough of them, then you can start to see whether or not most of them were workable or not. Of course, by your theory the "good ones" won't be accessible.

Michael

Can you find a *credible* source that says it is in the first place?

Bob M.

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Don't know how it works but it seems to be in revival.

That's government for you. No one loses his job for NOT declassifying something. But AFAIK all of his stuff has been released and is back in a museum in his native land. Just enjoy the three phase system and wireless transmission of signals, both if which he invented.

. . . . . . . .

Well, I could believe it is enough to toast a Bird or something bigger. Tesla Tower :) (burglary-protection? Such an installation would not be more dangerous than killer-dogs, IMO. Or just to fall an opponent to unconciousness/blackout -Soft Defense)

Nothing new happened in the last decades... Mars is rusty, yes? People in the 14th Century have known, that Mars is of Iron. Just with the Eyes... Seeing is believing :)

Best Regards,

Daniel Mandic

Hi JJ, you asked:

I remember reading that it was unusable due to the strength and wide distribution of the transmission. It jammed, or would jam, all other wireless stuff like radio broadcasts, two-way radios, television, mobile [cell] phones etc.

In other words, his gizmo worked, but at the expense of, and to the detriment of, a great deal of other important and developing communication technologies.

saxum g.n.

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Service to my country? Been there, Done that, and I\'ve got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida

That's hardly a surprise. Stand next to an existing broadcast radio transmitter, I specify broadcast because they would generally have more power than transmitters used for other purposes, and you can light up bulbs and extract some powerl But the minute you start moving a distance away, the power starts dropping off. Which is the whole point of high power transmitters, they need to be high power because at the receiver end the signal drop to miniscule levels.

Hence the only way, if it's even feasible, to broadcast power as radio frequencies is if massive power is transmitted, and even then I doubt it's really feasible because of how fast the power levels drop off as you move away from the transmitter. But, it would be a tremendous signal that would cause other problems if such a scheme was even attempted.

Michael

I'm no radio/Tesla expert, but I thought the whole idea was to broadcast at the resonant frequency of the atmosphere to achieve greater efficiency. Tesla probably thought all these crazy people trying to broadcast at incompatible, non-planet-resonating frequencies were doing it the hard way!

niftydog

OK, kids, let's stop and think just a moment about what "resonant frequency of the atmosphere" might actually mean...

Bob M.

Oh c'mon Bob, haven't you ever listened to the wind howl? That's the resonant frequency of the atmosphere! It's just so low that you can actually hear the radio waves. ERS

Hi niftydog!

Like a predecessor of Inter Galactic radiotraffic. Faster than Light, of course :)

My dear, our radio would not reach for Inter Planetary Radiotraffic. Not even that, it's almost useless for Planetary Radiotraffic.

Best regards,

Daniel Mandic

No, but I've heard one of our dogs howling in the wind pretty often; I guess I've discovered the resonant frequency of the bichon frise....:-)

Bob M.

This will come as a great surprise to those who have been operating the Spirit and Opportunity rovers on Mars. Are you planning on letting them know?

Bob M.

Gee, Microdyne built millions of dollars worth of receivers to do just that, and they have been at it for over 30 years.

Service to my country? Been there, Done that, and I\'ve got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida

Not to mention Yoyodyne Propulsion Systems managing to pull it off across the 8th dimension....

Bob M.

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