The Russian inventor of the «National Bureau of Radioengineering» found a new simple and cheap way to transfer information over long distances (100-150 km) — namely, on the networks of pipelines of various purpose (gas, oil and water pipes).


( Read more )

The explanation of the photoelectric effect, based on the replacement of a photon of energy ħω sequence ω solitons

Introduction. In 1905, Albert Einstein, Max Planck developed the ideas, gave the first theoretical explanation of the experimental dependences of the photoelectric effect, for which he later received the Nobel Prize [1]. These relationships are shown in Figure 1 (a, b) [2].


( Read more )

The National Administration of the U.S. Telecommunications and Information Administration (NTIA) in exceptionally extended ICANN's 6-month duration of the contract to manage the Internet (IANA — Internet Address Space Administration), the message says NTIA.

( Read more )

The experts «Kaspersky Lab» conducted an analysis of viral activity in February 2012. According to the company, mobile threats have reached a qualitatively new level.


( Read more )

The company «Doctor Web» reports on the identification of a new distribution scheme of threats to personal computers and devices running the operating system Mac OS X.

( Read more )

Internet portal RapidShare says not to worry for their future in the light of the recent unprecedented raid on its main competitor MegaUpload, although it also has a database as clients, exchanging legal content, and more. In RapidShare say they are ready in case of unforeseen situations, to provide protection at least for legal clients. Today, the Internet RapidShare is the second largest repository of digital content files after MegaUpload.

( Read more )

So far, we have discussed the basic electronic components, and power supply circuits. We have touched on filters, but not discussed them in detail. No course on electronics would be complete without a thorough understanding of filters, how they work, and how to recognize them when you see them.

( Read more )

Before going into the specifics of how a Klystron tube works, we must first understand it’s basic parts. Which reminds me of a story….

( Read more )

Thomas Edison, famous (at least in America), for inventing the light bulb, made many discoveries before he completed his task of lighting the path of the world. Along the way, he incidentally noted that if a filament were energised within a vacuum, that after time, a “shadow” would be left on the inside of the glass, which resembled the shape of the filament.

( Read more )

Now that we have caught up on basic tube theory, and understand how a beam of electrons can be formed in a vacuum, we are well on our way to understanding how a KLYSTRON operates.

( Read more )