25 Aprile 1874 : Born Guglielmo Marconi the Father of the radio !

By the way, I want us to appreciate the delicious irony in the above:

1) Hammond made most of his money by licensing and selling patents to RCA;
2) Hammond was the biggest RCA shareholder, when Tesla was in his final years;
3) RCA was Marconi's company (formerly American Marconi Co)
4) RCA paid Hammond . Hammond paid Tesla.

Thus, in a bizarre and modest way, Marconi paid Tesla.

Hammond was not beyond pushing the 'brand' himself. Here is a bizarre cartoon about Hammond in PopSci 1941.

https://books.google.com/books?id=D...resnum=3&ved=0CDEQ6wEwAjgK#v=onepage&q&f=true

This PopSci issue also includes the engaging article: 'Things to do with Soap'. Gurgle gurgle.

Hammond built a castle up here in MA and had (has) a nude statue of himself on display as art. I think that is weird, but it could also be his joke against the world---seeing himself as some sort of ideal.



Well, he was one hell of an inventor.

 

John Hammond's most USED invention is , oddly, that magnet that holds onto the tin can top when you open it....

He had over 200 patents in wireless (radio) remote control. Your drone uses (expired) Hammond patents. Hammond looked at Tesla as a sort of mentor.

 

Hammond invented this also...

Apparently he was a big fan of camping out and finding solutions to make camping meals easier. Mainline that bird!

 

And Pe Landell de Moura ????

 

lhvljhgljhvg

 

In wikipedia I found this:



At 41 years old , Tesla recorded the first basic patent on the radio
United States Patent 645576, United States Patent and Trademark Office.
so his patent is 1897


Marconi on December 8, 1895, after several attempts, with the device he had built proved to be valid in communicating and receiving distant signals, but also overcoming the natural obstacles (in this case, the hill behind Villa Griffone). The shotgun that Mignani shot in the air to confirm the success of the experiment (the instrument vibrates and sings like a cricket three times) is considered the baptism act of the radio in Italy;

Other experimenters had similar results previously before Marconi himself, like Nikola Tesla, who transmitted 50 km away earlier this year in a link to West Point [10], while Russian Alexander Popov had made a radio wave receiver in May of the same year].


It should be noted, however, that the generation of continuous electromagnetic oscillations, not dampened, was not possible before the invention of the thermoelectric valves and in particular the triode (1916), so any Tesla project would never have been able to operate in 1893.





73 de IW2BSF

 

Some information on wikipedia is good. Other is total nonsense.

If wikipedia states that Tesla invented radio it is making an assertion at odds with the facts.

Why are you relying on a tertiary derivative source for the facts?

ALL the Tesla patents are available in a compendium by Ty Shedleski, readily available on AMAZON. That is the 'source'.

 

Tesla Patent 645576 --in spades-- lists patent claims that REQUIRE a CONDUCTIVE ATMOSPHERIC MEDIUM.


Again, PLEASE LOOK AT THE ORIGINAL SOURCES. This patent DOES NOT DESCRIBE RF wireless.

 

Yes, Marconi picked up the ball and ran with it ...a 'ball' which Tesla created. Tesla's history is actually very well recorded.
You do realize that Columbus did NOT actually discover 'America', right?
You do realize that the Wright brothers didn't actually invent the first airplane, but rather had the first successful POWERED flight, right?
...It's funny how when an argument is weak, a person will tend to smear the argument by injecting 'fringe' elements ('conspiracy') as though they are part of the statement that was made.

 

The more I read Tesla's 'wireless' patents, the more I am convinced that the fatal wording was pure lawyer concoction to get the patents accepted, given the prior art of Heinrich Hertz, and Tesla himself...

I am sure that Tesla felt his 'enablement' was amply demonstrated and that all would be smooth sailing.

Invention is not only 'making novel'; its also articulating the invention properly for patent acceptance. IMO, Tesla was very poor with the latter and left it to an incompetent attorney that got him the patents, but ultimately cost him billions, and a proper legacy.

Your opinion may differ.

73
Chip W1YW

 

Marconi was an interesting fellow...

A) a fascist with strong ties to Mussolini;
B) Essentially bankrupt 4-5 times before RCA and broadcasting hit it big;
C) Had at least that number of mistresses;
D) Died when his heart stopped and stayed conscious to know it and say it to his doctor;
E) His most important patent may well be the most forgotten--metamaterials.

I like Marconi a lot--he was very real.

 

And does it matter ?
As Steve Jobs said:

"If you take something and make it your own ... it's your design and that is the dividing line between copying and stealing".

As Jobs, Marconi was first of all an enterpreneur.

73

 

thank W1YW :

Tesla Patent 645576 --in spades-- lists patent claims that REQUIRE a CONDUCTIVE ATMOSPHERIC MEDIUM.


Again, PLEASE LOOK AT THE ORIGINAL SOURCES. This patent DOES NOT DESCRIBE RF wireless.

 

Generation of continuous electromagnetic waves predate 1916 with at least a decade.
Before electronic means, there were rotating AC machinery methods for RF generation,
with the most important here:

• AC generator with many poles and high rotating speed (Alexanderson-RCA)
• Frequency multiplication in rotating Machines (Goldschmidt)
• Passive frequency multiplication in non-linear transformers (von Arco-Telefunken)

Also, arc discharge transmitters (Poulsen-Federal Telegraph) using DC to RF converters
had been around since about 1900 in practical forms.

The vacuum-tube oscillator is usually independently credited to Armstrong and Meissner at about
the same time (1912/13).

Finally, neither of Marconi and Tesla "invented" radio.
Their work was contemporary with several other independent scientific workers,
with Branly, Popov, Lodge and Bose at the forefront.

Tesla provided much of the theoretical foundations for the AC electrical machinery and circuits necessary
to build radio systems, but Marconi was the systems integrator and businessman who saw the commercial potential for "wireless" and created a workable and "sellable" system.

73/
Karl-Arne
SM0AOM

 

Wrong. Discover does not mean find. Discover means learn a thing and report it to the appropriate people. Columbus reported the presence and location of the Americas to the pope. At that time, the pope was the ultimate authority in Europe. In the true and proper meaning of the word, Columbus discovered America for Europe.