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Data transmission using fast neutrons

21.11.2021

Traditional radio communications are based on electromagnetic radiation, but scientists from Lancaster University (UK) and the Jozsef Stefan Institute (Slovenia) in their new project were able to transmit data in digital format, using fast neutrons as a basis.

As part of the study, the scientists measured the spontaneous emission of fast neutrons emitted by californium-252, a radioactive isotope produced by nuclear reactors. Next, they modulated the neutron field, that is, the flux of free neutrons, by encoding the simplest information elements: words, the alphabet, and randomly selected numbers. The neutron flux hit the detector, and the output data was decoded on a laptop, with the help of which the encoded information was restored.

To check the system's performance, a double-blind test was conducted, in which the value received on the random number generator was encoded without prior notification of the senders, after which the signal was transmitted and decoded. All data transfer tests were 100% successful.

Lancaster University professor Malcolm Joyce commented on the project: "We are demonstrating the potential of fast neutron radiation as a wireless communication medium for applications where electromagnetic data transmission is either impossible or inherently limited." He clarified that fast neutrons have an advantage over electromagnetic waves, which are weakened when passing through various obstacles, including metal ones.

This technology can be useful in cases where electromagnetic waves do not work and cable laying is not recommended: reactor containments or metal vaults and bulkheads in offshore structures. Neutron communications will also come in handy in emergency situations when traditional communications do not work.

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The release of analog TVs is curtailing 22.02.2006

The Japanese corporation Matsushita Electric (trademark Panasonic) was the first to announce the cessation of development in the field of analog television.

Existing models of CRT TVs will be supplied mainly to developing countries where the transition to digital TV is unlikely to take place in the foreseeable future, including Russia. Probably next month Panasonic will stop developing analog TVs and focus on the release of digital models. The reason for this is the decrease in the profitability of production.

Thus, in 2005, Panasonic sold 2,3 million TVs in the Japanese market, of which 30% were analog models. The net profit from the sale of these TVs was significantly lower than the profit from the sales of "figures".

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