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A compact fluorescent lamp (CFL), is a type of lamp (or light bulb) designed to fit into the same space and usually also the same socket as an incandescent bulb, but with the advantages of a fluorescent lamp.Many CFLs can directly replace an existing incandescent lamp. They were invented late in the 20th century and much used after the turn of the century (after 2000).
This article is within the scope of WikiProject Trains, an attempt to build a comprehensive and detailed guide to rail transport on Wikipedia. If you would like to participate, you can visit the project page, where you can join the project and/or contribute to the discussion.See also: WikiProject Trains to do list and the Trains Portal. Start This article has been rated as Start-Class on the ...
From today's featured article Structure of rhodocene Rhodocene is an organometallic compound with the formula [Rh(C 5 H 5) 2]. Each molecule contains an atom of rhodium bound between two planar systems of five carbon atoms known as cyclopentadienyl rings in a sandwich arrangement. The [Rh(C 5 H 5) 2] radical is found above 150 °C or when trapped by cooling to liquid nitrogen temperatures (− ...
A fluorescent lamp, is a type of electric light (lamp) that uses ultraviolet emitted by mercury vapor to excite a phosphor, which emits visible light. There are two general types, traditional fluorescent and compact fluorescent.This article is about traditional (straight tube shaped) fluorescent lamps. The purchase price of a fluorescent lamp is often much higher than an incandescent lamp of ...
A hopper car (US) or hopper wagon is a type of railroad freight car used to transport loose bulk commodities such as coal, ore, grain, and track ballast. Two main types of hopper car exist: covered hopper cars, which are equipped with a roof, and open hopper cars, which do not have a roof. This type of car is distinguished from a gondola car in that it has opening doors on the underside or on ...
Looking for abbreviations of HOBC? It is High Output Ballast Cleaner. High Output Ballast Cleaner listed as HOBC. High Output Ballast Cleaner - How is High Output Ballast Cleaner abbreviated? ... Wikipedia Encyclopedia. ... Tell a friend about us, add a link to this page, or visit the webmaster's page for free fun content. Link to this page: ...
Ballast is used in ships to provide moment to resist the lateral forces on the hull. Insufficiently ballasted boats tend to tip or heel excessively in high winds. Too much heel may result in the boat/ship capsizing.If a sailing vessel should need to voyage without cargo then ballast of little or no value would be loaded to keep the vessel upright.
screening of ballast in railway. track ballast wikipedia, the free encyclopedia. track ballast forms the trackbed upon which railway sleepers (uk) or railroad ties (us) are laid. it is packed between, below, and around the ties. it is used to bear ...
Regular ballast cleaning of tracks and turnouts can be a prerequisite for the economic operation of railway permanent way. A clean, elastic and homogeneous ballast bed is an absolute essential for problem-free functioning of the wheel on rail system. This is gaining importance, particularly on high speed lines and other highly loaded sections of track.
Ballast resistor. A resistor that has the property of increasing in resistance as current flowing through it increases, and decreasing in resistance as current decreases. Therefore the ballast resistor tends to maintain a constant current flowing through it, despite variations in applied voltage or changes in …
History []. Before the opening of the Baltimore & Ohio Railroad and the Chesapeake & Ohio Canal in Harpers Ferry, ia (now West ia), considerable amounts of coal were carried via the Potomac River. Since timber was an abundant resource, flat boats, called "gondolas" (a spoof on Venetian rowing boats), were constructed to navigate the "black diamonds" downriver to markets around ...
An electrical ballast is a device placed in series with a load to limit the amount of current in an electrical circuit.. A familiar and widely used example is the inductive ballast used in fluorescent lamps to limit the current through the tube, which would otherwise rise to a destructive level due to the negative differential resistance of the tube's voltage-current characteristic.
Ballast regulator - Wikipedia Ballast regulator From Wikipedia, the free encyclopedia A ballast regulator at work in Spain A ballast regulator (also known as a ballast spreader or ballast sweeper ) is a piece of rail transport maintenance of way equipment used to shape and distribute the gravel track ballast that supports the ti...
The term rolling stock in the rail transport industry refers to railway vehicles, including both powered and unpowered vehicles: for example, locomotives, freight and passenger cars (or coaches), and non-revenue cars.Passenger vehicles can be un-powered, or self-propelled, single or multiple units. A connected series of railway vehicles is a train (this term applied to a locomotive is a common ...
rock and sand supplies in eldoret,kenya. Kenya - Wikipedia, the free encyclopedia . Kenya, officially the Republic of Kenya, is a sovereign state in …
Ballast cleaner - Wikipedia. Ballast cleaner. A ballast cleaner Matisa C330F in action on the Coastal Railway in Haifa, Israel. A ballast cleaner (also known as an undercutter, a shoulder ballast cleaning machine) is a machine that specialises in cleaning the railway track ballast (gravel, blue stone or other aggregate) of impurities.
Freight transport is the physical process of transporting commodities and merchandise goods and cargo. The term shipping originally referred to transport by sea but in American English, it has been extended to refer to transport by land or air (International English: "carriage") as well."Logistics", a term borrowed from the military environment, is also used in the same sense.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased. Ballast-Cleaning Machine a track machine for cleaning ballast of contaminants, such as fine debris and dust, that lower the resiliency of the ballast layer and prevent the drainage of moisture. Ballast becomes contaminated because the gravel ...
A janitor (American English, Scottish English), custodian, porter, cleanser, cleaner or caretaker is a person who cleans and maintains buildings.Janitors' primary responsibility is as a cleaner.Janitors typically earn an average wage of $15 per hour in the United States. That translates to an annual salary of around $35,000 for states that pay janitors the most, such as New York, Massachusetts ...
Rolling stock is considered to be a liquid asset, or close to it, since the value of the vehicle can be readily estimated and then shipped to the buyer without much cost or delay. [8] [9] Inventory or stock is the goods and materials that a business holds for the ultimate goal of resale. The term contrasts with fixed stock ( infrastructure ...
The Pneumatic Ballast Injection Machine was an experimental stoneblower tested by British Rail for the correction of track ballast and vertical geometry.It was built by Plasser GB, a division of the Austrian railway machinery company Plasser & Theurer under contract to British Rail.. A "frog" device which attached ahead of the machine reported measurements one metre apart of the altitude ...
Track ballast - Wikipedia. 25-04-2021· Track ballast forms the trackbed upon which railroad ties (sleepers) are laid. It is packed between, below, and around the ties. It is used to bear the load from the railroad ties, to facilitate drainage of water, and also to keep down vegetation that might interfere with the track structure.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased. Ballast System a system of pipes and pumps that serves to take in and expel the liquid ballast of a ship. Ballast is usually taken on in ballast tanks (sections of double hull, deep tanks, on-board and below-decks tanks, and the forepeak and ...
Ballast cleaner - Wikipedia, the free encyclopedia. A ballast cleaner (also known as an undercutter) is a machine that specialises ... the railway track ballast (gravel, blue stone or other aggregate) of impurities. ... in the ballast, these fines stick together, making the ballast like a …
A ballast cleaner is a railway machine that specialises in cleaning the railway track ballast (gravel, blue stone or other aggregate) of impurities.. Over time, ballast becomes worn down by attrition, and loses its angularity, becoming rounded instead. This hinders the tessellation of pieces of ballast with one another, and thus reduces its effectiveness.
Scale test car Last updated February 21, 2019 A scale test car.. A scale test car is a type of railroad car in maintenance of way service. Its purpose is to calibrate the weighing scales used to weigh loaded railroad cars. Scale test cars are of a precisely known weight …
Source: Wikipedia, the free encyclopedia. A ballast cleaner Matisa C330F in action on the Coastal Railway in Haifa, Israel. A ballast cleaner (also known as an undercutter, a shoulder ballast cleaning machine ) is a machine that specialises in cleaning the …
A ballast cleaner is a machine that specialises in cleaning the railway track ballast of impurities.[1] ... From Wikipedia, the free encyclopedia {{bottomLinkPreText}} {{bottomLinkText}} This page is based on a Wikipedia article written by contributors (read/edit).
Derail device installed at an industrial site, complete with blue flag protection. A derail or derailer is a device used to prevent fouling (blocking or compromising) of a rail track (or collision with anything present on the track, such as a person, a train or a fallen branch) by unauthorized movements of trains or unattended rolling stock. [1] The device works by derailing the equipment as ...
From Wikipedia the free encyclopedia. This is a list of all types of vehicle that can be used on a railway, either specifically for running on the rails, or for maintenance or up-keep of a railway. This list is incomplete; you can help by adding missing items. (August 2008) General ...
From Wikipedia, the free encyclopedia. This is a list of all types of vehicle that can be used on a railway, either specifically for running on the rails, or for maintenance or up-keep of a railway. This list is incomplete; you can help by adding missing items. (August 2008) General ...
A flatcar' (US) (also flat car (US) or flat wagon or flatbed ()) or is a piece of railroad (US) or railway (non-US) rolling stock that consists of an open, flat deck mounted on a pair of trucks (US) or bogies (UK), one at each end containing four or six wheels. Occasionally, flat cars designed to carry extra heavy or extra large loads are mounted on a pair (or rarely, more) of bogies under ...
WikiZero Özgür Ansiklopedi - Wikipedia Okumanın En Kolay Yolu . Coil cars (also referred to as "steel coil cars" or "coil steel cars") are a specialized type of rolling stock designed for the transport of coils (i.e., rolls) of sheet metal, particularly steel.They are considered a subtype of the gondola car, though they bear little resemblance to a typical gondola.
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