Overhead lines or overhead wires are used to transmit electrical energy to trams, trolleybuses or trains at a distance from the energy supply point. This...

An overhead projector (OHP) is a device that allows you to display images from either a computer/laptop or images created in real time. Overhead projectors...

The Liverpool Overhead Railway (known locally as the Dockers' Umbrella) was an elevated railway in Liverpool which operated along the Liverpool Docks....

current from overhead lines at 15,000 volts, 16.7 Hz Alternating current from overhead lines at 25,000 volts, 50 Hz Direct current from overhead lines at...

A pantograph is a device that collects electric current from overhead lines for electric trains or trams. The term stems from the resemblance to pantograph...

units operate off 25 kV alternating current (AC) from overhead wires. Where clearances for the overhead wires on the Great Eastern Main Line and London, Tilbury...

at 625 Volts direct current. Connections were built with the Liverpool Overhead Railway (LOR) at Seaforth & Litherland railway station to a new station...

electricity from a "live" overhead wire to the control and propulsion equipment of a tram or trolley bus. The use of overhead wire in a railway electrification...

in 1908. The system used was 6,600 Volt, 25 Hz alternating current from overhead lines. Power was generated at the MR's own power station in Heysham. This...

locomotive is one that can operate either from an electrical supply, such as overhead lines or an energized third rail, or from an onboard diesel engine. This...

and has a top speed of 110 mph (180 km/h). They operate from 25 kV AC overhead wires and produce 5,000 bhp (3,700 kW). The class is employed on both express...

between Glasgow Central and Ayr/Ardrossan with alternating current (AC) overhead lines. Usage was extended to Largs in January 1987. They were also used...

The shoes were retracted when switching to overhead power. After the opening of High Speed 1in 2007, overhead electrification is used throughout and the...

and five Classes (Class 313/314/315/507/508). Able to operate from 25 kV overhead line current collection only, the fleet worked outer-suburban services...

locomotive which also has a diesel engine. The diesel engine is used when an electricity supply from overhead lines or a third rail is not available....

East region, provision has been made for future conversion to 25 kV AC overhead supply or dual voltage, although at present no trains have been fitted...

essence of the event is to lift a barbell from the platform to locked arms overhead in a smooth continuous movement. The lift requires not only great strength...

22" north of the Equator. At every June Solstice the Sun passes straight overhead on the tropic. This never happens anywhere north of the Tropic of Cancer...

locomotives. Electric locomotives get their power from three main sources: overhead lines, an on-board battery, or a third rail. There are many different types...

dual-voltage British railway locomotive which can run on 25 kV AC from overhead lines or 750 V DC from a third rail. It was designed specifically to operate...

includes all the areas of the Earth where the sun reaches a point directly overhead at least once a year. The word "tropics" comes from Greek tropos meaning...

Thomson-Houston [en]. The locomotives were built to be able to work on both overhead wires and third rail. This was because third rail is dangerous for workers...

telecommunications. Such cables are an alternative to overhead cables, which are several meters above the ground. Overhead cables are often replaced with underground...

electric buses are built like a trolleybus, which can take power from an overhead line. Today, many trolleybuses also have batteries, which allow them to...

The subsolar point on a planet is when its Sun looks like it is directly overhead (in zenith). For planets with a rotation like the Earth's, the subsolar...

name is Einschienige Hängebahn System Eugen Langen (Eugen Langen Monorail Overhead Conveyor System). It is the oldest electric elevated railway with hanging...

Proposed electric version of the Class 58, powered through 25 kV AC from overhead wires. Class 93 - Proposed electric locomotive for use on the West Coast...

and local train services. Before third rails, electricity was carried in overhead wires. In the 19th century engineers found ways to use electricity to power...

three main devices used on tramcars to transfer electric current from the overhead lines above to the tram below. While once very common in continental Europe...

works fast because of these differences and because it has less "code overhead". It is available in English, Russian, Czech, Serbian, and Chinese. This...

moving lower. At the moment of the June solstice, the Sun is directly overhead some point on the Tropic of Cancer; this is the furthest north that the...

equator visualizes the celestial equator as a semicircle passing directly overhead through the zenith. As the observer moves north (or south), the celestial...

above). Electricity is usually transmitted over long distance through overhead power transmission lines. Underground power transmission is used only in...

North Western Railway. By contrast the WCML uses alternating current from overhead lines. LNWR electric units This short article about transport can be made...

design was big influence for racing engines. It was the first to use dual overhead camshafts (DOHC) and four valves per cylinder. This became the standard...

the spread of goals should include long-range shots, team goals, rabona, overhead kicks, individual plays, scorpion kicks, etc.).[source?] It should be awarded...

and hitting it across the net. The serve may be done underhand or overhead. The overhead serve is more common. The serve is done from behind the baseline...

inertia Normal -- Normal force -- Newton's laws of motion Oscilloscope - Overhead projector Plane mirror -- Potential energy -- Prism Rarefaction -- Ray...

units have dual power pick-up, from either 25 kV alternating current (AC) overhead lines for services north of London, or 750 V direct current (DC) third...

Glasgow-based Class 314 units, they are only able to operate from 25 kV overhead line current collection. The fleet works inner-suburban services on the...

they freeze and watch. Rabbit vision has a very wide field, including overhead scanning. Their predators are foxes, wolves, coyotes, cougars, lynxes,...

marks the most southerly latitude at which the sun can appear directly overhead. This happens at the December solstice, when the southern hemisphere is...

the first (and so far, the only) line where trains get their power from overhead wires above the track, instead of a third rail beside the track. All the...

transmission. It carries the electrical conductors (wires) of high-voltage overhead power lines. The tower is high for a safe distance for people, animals...

Slideshows are presented using a tool, such as a slide projector, an overhead projector or in more recent years, a computer running presentation software...

outdoor cooking using coke or other fuel for providing heat from underneath. Overhead grilling is more usual indoors, especially in professional kitchens. In...

dual-voltage units to be built, capable of drawing power via 25 kV AC overhead, or 750 V DC third-rail, and the first units in Britain to have fully automatic...

experimental gas-turbine APT-E unit, these units were powered by 25kV AC overhead electrification and were used on the West Coast Main Line between London...

to mean a tram (or streetcar). This is not to be confused with a trolleybus which is a bus which uses electricity from an overhead cable (like a tram)....

display of an image by devices such as: Movie projector Video projector Overhead projector Slide projector Map projection, in cartography Graphical projection...