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Scope Soldering Iron
The "Scope" soldering iron is a tool for soldering with lead-tin alloys, made in Australia since 1950, and intended for occasional or intermittent use. It has the virtue of quickly coming up to soldering temperature (~300C) and delivering considerable heat to a small area, but requires care to avoid overheating. It operates on low voltage (3–6V) and high current (tens of amps) from a battery or suitable transformer, so is by design electrically safe, and as it cools down rapidly when it leaves the operator's hand, should not constitute a fire risk. Principle of operation The soldering iron's " element" is a small carbon tip at the end of a pushrod connected to one terminal of the power supply, inside the stainless-steel barrel of the tool, but insulated from it. The barrel and its copper tip (the "bit"), is connected to the other terminal. When the user operates the pushrod, the carbon element bears against the back of the "bit", resulting in electric heating of the resistive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerial Picture Scope And Omicron 1962
Aerial may refer to: Music * ''Aerial'' (album), by Kate Bush * ''Aerials'' (song), from the album ''Toxicity'' by System of a Down Bands *Aerial (Canadian band) *Aerial (Scottish band) * Aerial (Swedish band) Performance art *Aerial silk, apparatus used in aerial acrobatics *Aerialist, an acrobat who performs in the air Recreation and sport *Aerial (dance move) *Aerial (skateboarding) *Aerial adventure park, ropes course with a recreational purpose * Aerial cartwheel (or side aerial), gymnastics move performed in acro dance and various martial arts *Aerial skiing, discipline of freestyle skiing *Front aerial, gymnastics move performed in acro dance Technology Antennas *Aerial (radio), a radio ''antenna'' or transducer that transmits or receives electromagnetic waves **Aerial (television), an over-the-air television reception antenna Mechanical *Aerial fire apparatus, for firefighting and rescue *Aerial work platform, for positioning workers Optical *Aerial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electronics Work Tools
The field of electronics is a branch of physics and electrical engineering that deals with the emission, behaviour and effects of electrons using electronic devices. Electronics uses active devices to control electron flow by amplification and rectification, which distinguishes it from classical electrical engineering, which only uses passive effects such as resistance, capacitance and inductance to control electric current flow. Electronics has hugely influenced the development of modern society. The central driving force behind the entire electronics industry is the semiconductor industry sector, which has annual sales of over $481 billion as of 2018. The largest industry sector is e-commerce, which generated over $29 trillion in 2017. History and development Electronics has hugely influenced the development of modern society. The identification of the electron in 1897, along with the subsequent invention of the vacuum tube which could amplify and rectify small el ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hand Tools
A hand tool is any tool that is powered by hand rather than a motor. Categories of hand tools include wrenches, pliers, cutters, files, striking tools, struck or hammered tools, screwdrivers, vises, clamps, snips, hacksaws, drills, and knives. Outdoor tools such as garden forks, pruning shears, and rakes are additional forms of hand tools. Portable power tools are not hand tools. History Hand tools have been used by humans since the Stone Age when stones were used for hammering and cutting. During the Bronze Age tools were made by casting the copper and tin alloys. Bronze tools were sharper and harder than those made of stone. During the Iron Age iron replaced bronze, and tools became even stronger and more durable. The Romans developed tools during this period which are similar to those being produced today. In the period since the industrial revolution, the manufacture of tools has transitioned from being craftsman made to being factory produced. A large collection of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Warren And Brown
A warren is a network of wild rodent or lagomorph, typically rabbit burrows. Domestic warrens are artificial, enclosed establishment of animal husbandry dedicated to the raising of rabbits for meat and fur. The term evolved from the medieval Anglo-Norman concept of free warren, which had been, essentially, the equivalent of a hunting license for a given woodland. Architecture of the domestic warren The cunicularia of the monasteries may have more closely resembled hutches or pens, than the open enclosures with specialized structures which the domestic warren eventually became. Such an enclosure or ''close'' was called a ''cony-garth'', or sometimes ''conegar'', ''coneygree'' or "bury" (from "burrow"). Moat and pale To keep the rabbits from escaping, domestic warrens were usually provided with a fairly substantive moat, or ditch filled with water. Rabbits generally do not swim and avoid water. A ''pale'', or fence, was provided to exclude predators. Pillow mounds The most ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Age
''The Age'' is a daily newspaper in Melbourne, Australia, that has been published since 1854. Owned and published by Nine Entertainment, ''The Age'' primarily serves Victoria (Australia), Victoria, but copies also sell in Tasmania, the Australian Capital Territory and border regions of South Australia and southern New South Wales. It is delivered both in print and digital formats. The newspaper shares some articles with its sister newspaper ''The Sydney Morning Herald''. ''The Age'' is considered a newspaper of record for Australia, and has variously been known for its investigative reporting, with its journalists having won dozens of Walkley Awards, Australia's most prestigious journalism prize. , ''The Age'' had a monthly readership of 5.321 million. History Foundation ''The Age'' was founded by three Melbourne businessmen: brothers John and Henry Cooke (who had arrived from New Zealand in the 1840s) and Walter Powell. The first edition appeared on 17 October 1854. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bruce Small
Sir Andrew Bruce Small OStJ (11 December 1895 – 1 May 1980) was an Australian businessman and politician. In Melbourne, he developed Malvern Star bicycles into a household name in Australia, then retired to the Gold Coast, Queensland, where he developed property, and as Mayor of the Gold Coast, promoted the area to Australia and the world as a family friendly holiday destination through the bikini-clad meter maids in Surfers Paradise. Background Bruce Small was born in Ryde, New South Wales, in 1895. At the age of 24 in 1920 he bought an interest in the Malvern Star shop at 185 Glenferrie Rd, in the Melbourne suburb of Malvern, from Austral Wheel Race winner, Tom Finnigan. His brothers, Frank and Ralph Small, joined Bruce in his sales, building cycles at the rate of 5 per week. The small cycle shop offered prizes in cycle races, resulting in Hubert Opperman winning a prize in 1921, and impressing Small so much that a job was offered to the young cyclist. Thus started a long ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electronics Today International
''Electronics Today International'' or ETI was a magazine for electronics hobbyists and professionals. Originally started in Australia in April 1971, ''ETI'' was published in the UK in 1972. From there, it expanded to various European countries, including France (where it was started in November 1972) and over to Canada. It was one of the first magazines to publish circuit diagrams for building homebrew computer systems. They also published a monthly series of articles for their "system 68" microcomputer based on the Motorola 6800 Microprocessor, most of them written by John Miller-Kirkpatrick, the dozen or so articles described in detail how to build a M6800 based microcomputer, including a VDU. In that sense it was one of the first computer magazines. The 1970s ''ETI'' was launched by Modern Magazines, a publisher of specialist magazines based in Rushcutters' Bay, Sydney. The magazine was started at the suggestion of Kim Ryrie (later of Fairlight CMI fame), the electroni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nickel–cadmium Battery
The nickel–cadmium battery (Ni–Cd battery or NiCad battery) is a type of rechargeable battery using nickel oxide hydroxide and metallic cadmium as electrodes. The abbreviation ''Ni-Cd'' is derived from the chemical symbols of nickel (Ni) and cadmium (Cd): the abbreviation ''NiCad'' is a registered trademark of SAFT Corporation, although this brand name is commonly used to describe all Ni–Cd batteries. Wet-cell nickel-cadmium batteries were invented in 1899. A Ni-Cd battery has a terminal voltage during discharge of around 1.2 volts which decreases little until nearly the end of discharge. The maximum electromotive force offered by a Ni-Cd cell is 1.3V. Ni-Cd batteries are made in a wide range of sizes and capacities, from portable sealed types interchangeable with carbon-zinc dry cells, to large ventilated cells used for standby power and motive power. Compared with other types of rechargeable cells they offer good cycle life and performance at low temperatures with a fai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Herald (Melbourne)
''The Herald'' was a morning and, later, evening broadsheet newspaper published in Melbourne, Australia, from 3 January 1840 to 5 October 1990, which is when it merged with its sister morning newspaper ''The Sun News-Pictorial'' to form the ''Herald-Sun''. Founding The ''Port Phillip Herald'' was first published as a semi-weekly newspaper on 3 January 1840 from a weatherboard shack in Collins Street. It was the fourth newspaper to start in Melbourne. The paper took its name from the region it served. Until its establishment as a separate colony in 1851, the area now known as Victoria was a part of New South Wales and it was generally referred to as the Port Phillip district. Preceding it was the short-lived ''Melbourne Advertiser'' which John Pascoe Fawkner first produced on 1 January 1838 as hand-written editions for 10 weeks and then printed for a further 17 weekly issues, the ''Port Phillip Gazette'' and ''The Port Phillip Patriot and Melbourne Advertiser''. But within ei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solder
Solder (; NA: ) is a fusible metal alloy used to create a permanent bond between metal workpieces. Solder is melted in order to wet the parts of the joint, where it adheres to and connects the pieces after cooling. Metals or alloys suitable for use as solder should have a lower melting point than the pieces to be joined. The solder should also be resistant to oxidative and corrosive effects that would degrade the joint over time. Solder used in making electrical connections also needs to have favorable electrical characteristics. Soft solder typically has a melting point range of , and is commonly used in electronics, plumbing, and sheet metal work. Alloys that melt between are the most commonly used. Soldering performed using alloys with a melting point above is called "hard soldering", "silver soldering", or brazing. In specific proportions, some alloys are eutectic — that is, the alloy's melting point is the lowest possible for a mixture of those components, and co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Farmers' Weekly (Perth)
''The'' () is a grammatical article in English, denoting persons or things already mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is the definite article in English. ''The'' is the most frequently used word in the English language; studies and analyses of texts have found it to account for seven percent of all printed English-language words. It is derived from gendered articles in Old English which combined in Middle English and now has a single form used with pronouns of any gender. The word can be used with both singular and plural nouns, and with a noun that starts with any letter. This is different from many other languages, which have different forms of the definite article for different genders or numbers. Pronunciation In most dialects, "the" is pronounced as (with the voiced dental fricative followed by a schwa) when followed by a consonant sound, and as (homophone of pronoun ''thee'') when followed by a v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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