Thomas Edison was the first to put forward the theory that after death, consciousness passes into an unknown dimension, and from there it can communicate with people.
Where did he get such, at that time, a little wild information?
At the time of Edison it was already known that "the dead can talk", and the scientist cherished the idea of creating such an apparatus that could catch voices from the other side. Edison then thought that it was necessary to create something fixing the smallest frequency fluctuations. There is a version that he still managed to do it. But the device was never made public.
Nevertheless, in 1877, a phonograph came out from under the hands of Edison. The world's first device capable of both recording and playing sound. Actually, he was the "grandfather" of all different audio equipment. And Edison was the first to record voices in silence.
Edison and his invention.
40 years later, Edison's theory was confirmed by the Swedish documentary writer Jürgensen. He recorded the voices of birds in the forest, and during the subsequent listening recorded on the tape someone's hoarse voice, speaking in Norwegian. According to the scriptwriter, there were no people next to him. And then he went to the radio station to find out if he could accidentally "catch" someone's radio. However, it turned out there that no such broadcasts were broadcast that day. From that time on, Jürgensen became seriously interested in the phenomenon of the electronic voice. And after a while I even heard the voice of my mother. After some time, the Latvian psychologist Raudiv joined the research.
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What did they find out?
The recorded voices can speak completely different languages. And by the style of speech, you can determine what time the message belongs to. Even speeches from the late Middle Ages are documented. More often, one or more short phrases can be heard. Less often, whole revelations. Sometimes you can hear threats or negativity. In this case, those who like to record such things basically stop their activities. But there are those who continued to communicate. Such people sometimes committed suicide.
In 1977, an attempt was made to create another device for reproducing voices from that side. The case was even funded by the Americans, so fiercely that they became interested in NASA. By the way, the patent of this device called "Spirik" was not sold, and it can be found in the public domain, and even try to assemble it yourself.
If it is difficult, you can choose another method.
You need to be in a quiet place and turn on sound recording. At the same time, you should introduce the person with whom you would like to communicate, and ask questions. The resulting recording will need to be skipped to the beginning and listened carefully. By the way, the majority of people who are fond of this will tell you that if you do not initially believe in this matter, you will not hear anything.
Another working option is to turn on an empty hiss radio wave and talk to it. True, if you do not write anything in addition, then you will not have any evidence). You can try the same trick with a TV tuned to an empty channel. Not the fact that it will turn out right away - it's easier to hear a ghost than to see.
Most believe that this is all untruth and falsification, but many scientists see a piece of truth in this. These are not the voices from the radio. And the voices themselves are unnaturally high, they sound very unusual.