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Aberystwyth Cliff Railway
The Aberystwyth Cliff Railway () opened on 1 August 1896. It is a long funicular railway in Aberystwyth and is the second longest funicular railway in the British Isles, after the Lynton and Lynmouth Cliff Railway. Since November 1987, the Aberystwyth Cliff Railway has been a listed building, Grade II listed structure. The Cliff Railway was developed as an element of Constitution Hill, Aberystwyth, Constitution Hill, a Victorian era, Victorian business venture by the Aberystwyth Improvement Company in the 1890s. The funicular took visitors to the top of the hill, where attractions such as a camera obscura were established. The cliff railway was originally a water balance system, but it was electrified during 1921. Passengers numbers were high during its initial decades, but dropped after the outbreak of the World War II, Second World War and stayed depressed for decades. The cliff railway is now owned and run by Constitution Hill Ltd, a registered Charitable organization, charit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aberystwyth
Aberystwyth (; ) is a University town, university and seaside town and a community (Wales), community in Ceredigion, Wales. It is the largest town in Ceredigion and from Aberaeron, the county's other administrative centre. In 2021, the population of the town was 14,640. Located in the Historic counties of Wales, historic county of Cardiganshire, means "the mouth of the River Ystwyth, Ystwyth". It has been a major educational location in Wales since the establishment of University College Wales, now Aberystwyth University, in 1872. The town is situated on Cardigan Bay on the west coast of Wales, near the confluence of the River Ystwyth and Afon Rheidol. Following the reconstruction of the harbour, the Ystwyth skirts the town. The Rheidol passes through the town. The seafront, with a Royal Pier, Aberystwyth, pier, stretches from Constitution Hill, Aberystwyth, Constitution Hill at the north end of the Promenade to the harbour at the south. The beach is divided by the castle. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Pump
A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action, typically converted from electrical energy into hydraulic or pneumatic energy. Mechanical pumps serve in a wide range of applications such as pumping water from wells, aquarium filtering, pond filtering and aeration, in the car industry for water-cooling and fuel injection, in the energy industry for pumping oil and natural gas or for operating cooling towers and other components of heating, ventilation and air conditioning systems. In the medical industry, pumps are used for biochemical processes in developing and manufacturing medicine, and as artificial replacements for body parts, in particular the artificial heart and penile prosthesis. When a pump contains two or more pump mechanisms with fluid being directed to flow through them in series, it is called a ''multi-stage pump''. Terms such as ''two-stage'' or ''double-stage'' may be used to specifically describ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trustee
Trustee (or the holding of a trusteeship) is a legal term which, in its broadest sense, refers to anyone in a position of trust and so can refer to any individual who holds property, authority, or a position of trust or responsibility for the benefit of another. A trustee can also be a person who is allowed to do certain tasks but not able to gain income.''Black's Law Dictionary, Fifth Edition'' (1979), p. 1357, . Although in the strictest sense of the term a trustee is the holder of property on behalf of a beneficiary, the more expansive sense encompasses persons who serve, for example, on the board of trustees of an institution that operates for a charity, for the benefit of the general public, or a person in the local government. A trust can be set up either to benefit particular persons or for any charitable purposes (but not generally for non-charitable purposes): typical examples are a will trust for the testator's children and family, a pension trust (to confer bene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Grid (Great Britain)
The National Grid is the high-voltage electric power transmission Grid (electricity), network supporting the Electricity in Great Britain, UK's electricity market, connecting power stations and major Electrical substation, substations, and ensuring that electricity generated anywhere on the grid can be used to satisfy demand elsewhere. The network serves the majority of Great Britain and some of the surrounding islands. It does not cover Northern Ireland, which is part of the Electricity sector in Ireland, Irish single electricity market. The National Grid is a wide area synchronous grid operating at 50 hertz and consisting of 400 kV and 275 kV lines, as well as 132 kV lines in Scotland. It has several undersea power cable, undersea interconnectors: an AC connector to the Isle of Man, and High-voltage direct current, HVDC connections to Northern Ireland, the Shetland Islands, the Republic of Ireland, France, Belgium, the Netherlands, Norway, and Denmark. Ownership Since the pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aberystwyth Wales UK 1985 02
Aberystwyth (; ) is a university and seaside town and a community in Ceredigion, Wales. It is the largest town in Ceredigion and from Aberaeron, the county's other administrative centre. In 2021, the population of the town was 14,640. Located in the historic county of Cardiganshire, means "the mouth of the Ystwyth". It has been a major educational location in Wales since the establishment of University College Wales, now Aberystwyth University, in 1872. The town is situated on Cardigan Bay on the west coast of Wales, near the confluence of the River Ystwyth and Afon Rheidol. Following the reconstruction of the harbour, the Ystwyth skirts the town. The Rheidol passes through the town. The seafront, with a pier, stretches from Constitution Hill at the north end of the Promenade to the harbour at the south. The beach is divided by the castle. The town is divided into five areas: Aberystwyth Town; Llanbadarn Fawr; Waunfawr; Trefechan; and Penparcau. Main features of the t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cut-off (electronics)
In electronics, cut-off is a state of negligible conduction that is a property of several types of electronic components when a control parameter (that usually is a well-defined voltage or electric current, but could also be an incident light intensity or a magnetic field), is lowered or increased past a value (the conduction threshold). The transition from normal conduction to cut-off can be more or less sharp, depending on the type of device considered, and also the speed of this transition varies considerably. Cutoff values Diodes * Copper oxide diode: Usually between germanium and silicon diodes (0.2-0.5V) * Diac: Depends on configuration. * Germanium diode:apx 0.3 V; varying with temperature. * Schottky diode:0.10–0.45, varying with temperature. * Selenium diode:Depends on age and current. Usually higher than silicon diodes. * Silicon diode: cutoff occurs when Vf falls below apx 0.7 V. The exact voltage varies with temperature. * Thermionic diode: cutoff voltage ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steel
Steel is an alloy of iron and carbon that demonstrates improved mechanical properties compared to the pure form of iron. Due to steel's high Young's modulus, elastic modulus, Yield (engineering), yield strength, Fracture, fracture strength and low raw material cost, steel is one of the most commonly manufactured materials in the world. Steel is used in structures (as concrete Rebar, reinforcing rods), in Bridge, bridges, infrastructure, Tool, tools, Ship, ships, Train, trains, Car, cars, Bicycle, bicycles, Machine, machines, Home appliance, electrical appliances, furniture, and Weapon, weapons. Iron is always the main element in steel, but other elements are used to produce various grades of steel demonstrating altered material, mechanical, and microstructural properties. Stainless steels, for example, typically contain 18% chromium and exhibit improved corrosion and Redox, oxidation resistance versus its carbon steel counterpart. Under atmospheric pressures, steels generally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transformer
In electrical engineering, a transformer is a passive component that transfers electrical energy from one electrical circuit to another circuit, or multiple Electrical network, circuits. A varying current in any coil of the transformer produces a varying magnetic flux in the transformer's core, which induces a varying electromotive force, electromotive force (EMF) across any other coils wound around the same core. Electrical energy can be transferred between separate coils without a metallic (conductive) connection between the two circuits. Faraday's law of induction, discovered in 1831, describes the induced voltage effect in any coil due to a changing magnetic flux encircled by the coil. Transformers are used to change Alternating current, AC voltage levels, such transformers being termed step-up or step-down type to increase or decrease voltage level, respectively. Transformers can also be used to provide galvanic isolation between circuits as well as to couple stages of signa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercury-arc Valve
A mercury-arc valve or mercury-vapor rectifier or (UK) mercury-arc rectifier is a type of electrical rectifier used for converting high-voltage or high- current alternating current (AC) into direct current (DC). It is a type of cold cathode gas-filled tube, but is unusual in that the cathode, instead of being solid, is made from a pool of liquid mercury and is therefore self-restoring. As a result mercury-arc valves, when used as intended, are far more robust and durable and can carry much higher currents than most other types of gas discharge tube. Some examples have been in continuous service, rectifying 50-ampere currents, for decades. Invented in 1902 by Peter Cooper Hewitt, mercury-arc rectifiers were used to provide power for industrial motors, electric railways, streetcars, and electric locomotives, as well as for radio transmitters and for high-voltage direct current (HVDC) power transmission. They were the primary method of high power rectification before the advent o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DC Motor
A DC motor is an electrical motor that uses direct current (DC) to produce mechanical force. The most common types rely on magnetic forces produced by currents in the coils. Nearly all types of DC motors have some internal mechanism, either electromechanical or electronic, to periodically change the direction of current in part of the motor. DC motors were the first form of motors to be widely used, as they could be powered from existing direct-current lighting power distribution systems. A DC motor's speed can be controlled over a wide range, using either a variable supply voltage or by changing the strength of current in its field windings. Small DC motors are used in tools, toys, and appliances. The universal motor, a lightweight brushed motor used for portable power tools and appliances can operate on direct current and alternating current. Larger DC motors are currently used in propulsion of electric vehicles, elevator and hoists, and in drives for steel rolling mills. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electricity
Electricity is the set of physical phenomena associated with the presence and motion of matter possessing an electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations. Common phenomena are related to electricity, including lightning, static electricity, electric heating, electric discharges and many others. The presence of either a positive or negative electric charge produces an electric field. The motion of electric charges is an electric current and produces a magnetic field. In most applications, Coulomb's law determines the force acting on an electric charge. Electric potential is the Work (physics), work done to move an electric charge from one point to another within an electric field, typically measured in volts. Electricity plays a central role in many modern technologies, serving in electric power where electric current is used to energise equipment, and in electronics dealing w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
