"We all must try harder"?"The Electronic Revelation is out there"?Oh dear oh dear oh dear...Personally I dont give a sh** about "impotance", "history" and "heroes" and I think that the idea behind DIY is connected to the refusal of such thoughts.I even find the idea that someone "totally unknown" could be important for the history of something other than because of being unknown a bit paradox:)
Atwood is a digital music magazine that seeks out visionary artists and fresh voices with the goal of promoting the arts. The Atwood team is made up of individuals from all over the world that are passionate about art and innovation. We aim to showcase not only incredible creation, but also the stories behind them.
Wire behind the curtain rar
During the 1920s, significant advances were made in welding technology, including the introduction of automatic welding in 1920, in which electrode wire was fed continuously. Shielding gas became a subject receiving much attention, as scientists attempted to protect welds from the effects of oxygen and nitrogen in the atmosphere. Porosity and brittleness were the primary problems, and the solutions that developed included the use of hydrogen, argon, and helium as welding atmospheres.[23] During the following decade, further advances allowed for the welding of reactive metals like aluminum and magnesium. This in conjunction with developments in automatic welding, alternating current, and fluxes fed a major expansion of arc welding during the 1930s and then during World War II.[24] In 1930, the first all-welded merchant vessel, M/S Carolinian, was launched.
During the middle of the century, many new welding methods were invented. In 1930, Kyle Taylor was responsible for the release of stud welding, which soon became popular in shipbuilding and construction. Submerged arc welding was invented the same year and continues to be popular today. In 1932 a Russian, Konstantin Khrenov eventually implemented the first underwater electric arc welding. Gas tungsten arc welding, after decades of development, was finally perfected in 1941, and gas metal arc welding followed in 1948, allowing for fast welding of non-ferrous materials but requiring expensive shielding gases. Shielded metal arc welding was developed during the 1950s, using a flux-coated consumable electrode, and it quickly became the most popular metal arc welding process. In 1957, the flux-cored arc welding process debuted, in which the self-shielded wire electrode could be used with automatic equipment, resulting in greatly increased welding speeds, and that same year, plasma arc welding was invented by Robert Gage. Electroslag welding was introduced in 1958, and it was followed by its cousin, electrogas welding, in 1961.[25] In 1953, the Soviet scientist N. F. Kazakov proposed the diffusion bonding method.[26]
Gas metal arc welding (GMAW), also known as metal inert gas or MIG welding, is a semi-automatic or automatic process that uses a continuous wire feed as an electrode and an inert or semi-inert gas mixture to protect the weld from contamination. Since the electrode is continuous, welding speeds are greater for GMAW than for SMAW.[32]
A related process, flux-cored arc welding (FCAW), uses similar equipment but uses wire consisting of a steel electrode surrounding a powder fill material. This cored wire is more expensive than the standard solid wire and can generate fumes and/or slag, but it permits even higher welding speed and greater metal penetration.[33]
Submerged arc welding (SAW) is a high-productivity welding method in which the arc is struck beneath a covering layer of flux. This increases arc quality since contaminants in the atmosphere are blocked by the flux. The slag that forms on the weld generally comes off by itself, and combined with the use of a continuous wire feed, the weld deposition rate is high. Working conditions are much improved over other arc welding processes, since the flux hides the arc and almost no smoke is produced. The process is commonly used in industry, especially for large products and in the manufacture of welded pressure vessels.[36] Other arc welding processes include atomic hydrogen welding, electroslag welding (ESW), electrogas welding, and stud arc welding.[37] ESW is a highly productive, single-pass welding process for thicker materials between 1 inch (25 mm) and 12 inches (300 mm) in a vertical or close to vertical position.
To supply the electrical power necessary for arc welding processes, a variety of different power supplies can be used. The most common welding power supplies are constant current power supplies and constant voltage power supplies. In arc welding, the length of the arc is directly related to the voltage, and the amount of heat input is related to the current. Constant current power supplies are most often used for manual welding processes such as gas tungsten arc welding and shielded metal arc welding, because they maintain a relatively constant current even as the voltage varies. This is important because in manual welding, it can be difficult to hold the electrode perfectly steady, and as a result, the arc length and thus voltage tend to fluctuate. Constant voltage power supplies hold the voltage constant and vary the current, and as a result, are most often used for automated welding processes such as gas metal arc welding, flux-cored arc welding, and submerged arc welding. In these processes, arc length is kept constant, since any fluctuation in the distance between the wire and the base material is quickly rectified by a large change in current. For example, if the wire and the base material get too close, the current will rapidly increase, which in turn causes the heat to increase and the tip of the wire to melt, returning it to its original separation distance.[38]
Like the first welding process, forge welding, some modern welding methods do not involve the melting of the materials being joined. One of the most popular, ultrasonic welding, is used to connect thin sheets or wires made of metal or thermoplastic by vibrating them at high frequency and under high pressure.[46] The equipment and methods involved are similar to that of resistance welding, but instead of electric current, vibration provides energy input. Welding metals with this process does not involve melting the materials; instead, the weld is formed by introducing mechanical vibrations horizontally under pressure. When welding plastics, the materials should have similar melting temperatures, and the vibrations are introduced vertically. Ultrasonic welding is commonly used for making electrical connections out of aluminum or copper, and it is also a very common polymer welding process.[46]
Since many common welding procedures involve an open electric arc or flame, the risk of burns and fire is significant; this is why it is classified as a hot work process. To prevent injury, welders wear personal protective equipment in the form of heavy leather gloves and protective long-sleeve jackets to avoid exposure to extreme heat and flames. Synthetic clothing such as polyester should not be worn since it may burn, causing injury.[61] Additionally, the brightness of the weld area leads to a condition called arc eye or flash burns in which ultraviolet light causes inflammation of the cornea and can burn the retinas of the eyes. Goggles and welding helmets with dark UV-filtering face plates are worn to prevent this exposure. Since the 2000s, some helmets have included a face plate which instantly darkens upon exposure to the intense UV light. To protect bystanders, the welding area is often surrounded with translucent welding curtains. These curtains, made of a polyvinyl chloride plastic film, shield people outside the welding area from the UV light of the electric arc, but cannot replace the filter glass used in helmets.[62]
A pair of rats can produce nearly half a billion rats in three years. The damage they cause goes beyond the diseases they spread. Rats chewing on electrical wires is one of the most common causes of house fires.
[...] THE mix is unusual too, with sometimes extreme separation of the instrumentson the stereo channels, and the sessions were recorded with all-tube microphonepreamps connected to a digital tape machine in another studio. Zappa "wantedto record it the way he thought Edgard would want it to be recorded had hebeen a record producer," Gail Zappa recalls. "We had to find a placethat could record the way Frank intended and mike it the way Frank intended.Warners had one old studio that we could set up the instruments in, but thecontrol room wasn't up to the task, so we built a special snake [a cable thataccommodated all the wires] from a brand-new control room to the old studiowith the wood floors."
I do want people to have the whole experience. And what I mean by that is, we have the film footage and, because of the nature of Frank's health and what was going on, I do want people to have a look behind the curtain of all that with a video companion piece.
In this tight real estate market, many Realtors are farming neighborhoods and subdivisions seeking to identify new prospective clients. In the Richmond region, Goochland and Hanover Counties each have ordinances that prohibit door to door solicitations concerning real estate brokerage services, including leaving brochures or other materials behind. This activity falls under these counties no solicitation ordinances and is a prosecutable offense. At this time, other jurisdictions in the Richmond [...]
It has come to our attention that Internet scam artists are targeting buyers in real estate transactions. Within days of a scheduled closing, buyers are receiving an email that appears to come from either their real estate professional or closing agent that indicates there has been a last minute change in wiring instructions and instructs them to wire money to a different account. If buyers take this bait, they could [...]
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