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Radio Studio 54 Network

Radio Studio 54 Network, or Studio 54 Network, is an Italian private radio station based in Locri, Calabria. Emissions reach Studio 54 Network on FM in nine provinces in five regions of southern Italy: Messina, Reggio Calabria, Vibo Valentia, Cat ...

                                               

Radio Transito

Radio Transito is a radio station in São Paulo, broadcasting in 92.1 FM since 12/2/2007, specialized in providing traffic and transit news of the capital and metropolitan region to its listeners. The program of the station consists of live traffi ...

                                               

Frequency modulation

In telecommunications and signal processing, frequency modulation transmits information over a carrier wave by varying the frequency. This technique is different from amplitude modulation which varies the amplitude, but keeps the frequency consta ...

                                               

Orthogonal frequency-division multiplexing

Orthogonal Frequency Division Multiplexing is a technology related to Frequency Division Multiplexing. With it, many different signals can be sent over the same medium, at the same time. Each signal uses a different basis function. By using the b ...

                                               

Phase-shift keying

Phase shift keying is a way of transmitting information. This is done by modulating the phase of a carrier wave. In such a system, the amplitude of the wave does not carry any information; all information is present in the phase of the signal. In ...

                                               

Radio frequency

The term Radio frequency refers to electromagnetic radiation in the range of frequencies lower than microwaves. Radio waves at these frequencies have been found useful for long-range communications. Among these frequencies, shortwave radio commun ...

                                               

Radio wave

Radio waves make up part of the electromagnetic spectrum. These waves are packets of energy with differing wavelengths, similar to visible light waves, X-rays or gamma rays, except longer. A radio wave, like other electromagnetic waves, is simila ...

                                               

Spread spectrum

Spread spectrum is a method in radio and other kinds of telecommunication. Its purpose is to overcome interference, noise and jamming of signals. Sending electromagnetic signals through the air became possible in the later 19th century with wirel ...

                                               

Digital subscriber line

DSL is a way to transmit digital data over a telephone line. Telephone lines only transmit a limited spectrum of signals. This means that the other frequencies can be used to transmit data. The data is combined or multiplexed onto the telephone l ...

                                               

Nintendo DS

The Nintendo DS is a handheld system from Nintendo. Development began in mid-2002 and it was released in 2004/2005. It has a successor called the Nintendo 3DS, the very first 3D handheld, which also plays DS games. The DS is a small, nearly pocke ...

                                               

PlayStation Portable

The PlayStation Portable, or PSP, is Sonys first video game console to be a handheld. It was made in Egypt and came of there first on December 12, 2004. After that, it came out in North America on March 24, 2005 and came out in Europe on Septembe ...

                                               

Bad Aibling rail accident

The Bad Aibling rail accident was an accident that happened on the railway line in Bad Aibling in Bavaria, Germany, on 9 February 2016. Twelve people were killed and many more injured when two trains collided head-on, along a single-track line.

                                               

Bajo Hondo Train Station

Bajo Hondo Train Station is a Railway station, one of the two railway lines built by two different European companies running to the south of Buenos Aires Province it is located in the town of Bajo Hondo in Coronel Rosales Municipality.

                                               

Bihar train derailment

In Bihar on June 6, 1981, a train carrying more than 800 passengers traveling between the Mansi railway station and Saharsa railway station in, derailed and fell into the River Bagmati while it was crossing the bridge over the river.

                                               

Bretigny-sur-Orge train crash

On 12 July 2013, a train crashed in Bretigny railway station, in Bretigny-sur-Orne. Bretigny is 32 kilometres in Ile-de-France and is near Paris. The train was a service from Paris to Limoges. Six people are confirmed dead, 30 are injured, eight ...

                                               

Clementi rail accident

The 1993 Clementi rail accident was a rail accident that occurred on the East West line of the Singapore MRT. It was the MRTs first major incident and resulted in 156 passengers being injured. It was caused by a 50 litres oil spill.

                                               

Dahlerau train disaster

A passenger train carrying pupils was travelling on the railway line from Wuppertal to Radevormwald on the evening of 27 May 1971. The pupils belonged to the final year of a school in Radevormwald and were returning from a trip to Bremen. Around ...

                                               

Firozabad rail disaster

Firozabad rail disaster is the second most worst rail accident in India after the Bihar train derailment. It occurred on 20 August 1995 near Firozabad, Uttar Pradesh, India.

                                               

Harda twin train derailment

The Harda twin train derailment was a twin train derailment on 4 August 2015. It happened in Harda district, Madhya Pradesh, India. It killed around 31 people. At least 72 people were injured. Two trains passing over a small bridge both derailed ...

                                               

Lac-Megantic derailment

The Lac-Megantic derailment happened on July 6, 2013 in the town of Lac-Megantic, Quebec at approximately 01:15 EDT. It happened after an unattended 74-car freight train which was carrying Bakken formation crude oil ran away and derailed. The res ...

                                               

Ladbroke Grove rail crash

The Ladbroke Grove rail crash was a railway accident outside Paddington station, Ladbroke Grove, in London, on 5 October 1999, in the early morning. It involved 2 trains, one run by Thames Trains, the other by First Great Western.

                                               

Pukhrayan train derailment

The Pukhrayan train derailment was an accident that happened on 20 November 2016 in the Indian state of Uttar Pradesh. The Indore-Rajendra Nagar express derailed in the place of Pukhrayan, Kanpur, Uttar Pradesh.It has resulted in 140 deaths and 2 ...

                                               

Color model

A color model is a mathematical model describing the way to represent colors as numbers, usually as three or four values. These values are called color components or color channels. When such model is linked to a description of how to interpret t ...

                                               

CMY color model

CMY color model is a color model, used in color printing. CMY refers to the three inks used in printing: c yan, m agenta, and y ellow. The CMY model is subtractive. It means that it subtracts or masks colors from white background of the paper. Th ...

                                               

CMYK color model

CMYK color model is a subtractive color model, based on the CMY color model, used in color printing. CMYK refers to the four inks used in printing: c yan, m agenta, y ellow, and k ey. The CMYK model is subtractive. It means that it subtracts or m ...

                                               

Gamut

In computer graphics and photography, the gamut, or color gamut, is a certain subset of colors. Most often it is a subset of colors, which can be accurately represented by some output device. Another sense refers to the complete set of colors fou ...

                                               

RGB color model

RGB is an additive color model. In this model red, green and blue colors are added together to form a new color. An RGB color can be made by shining three colored lights of red, green, and blue onto a white wall in a dark room. Each light has a d ...

                                               

Subtractive color

Subtractive color, or "subtractive color mixing", helps to understand what will be the color of light bounced off paper covered with some layers of inks or dyes. This model is the principle of how dyes and inks are used in color printing and phot ...

                                               

Carotenoid

Carotenoids are organic pigments. They are found in the chloroplasts and chromoplasts of plants, and also some bacteria and fungi. The only animals known to produce carotenoids are aphids and mites, which got the genes from fungi. There are over ...

                                               

Chlorophyll

Chlorophyll is a chemical in the chloroplasts of plants. It allows plants to absorb and use light. Energy from the light is used in photosynthesis to make glucose. This contains lots of stored energy which the plant needs to release. It does this ...

                                               

Ochre

Ochre or Ocher is a golden-yellow or light yellowish brown colour. The word is from the Greek ochros, meaning "yellow". Ochre is natural earth pigment containing hydrated iron oxide.

                                               

Ultramarine

Ultramarine is a blue pigment, and the name of a blue colour. The pigment is found naturally. It is ground down from a mineral called Lazurite, the main component of lapis lazuli. The colour is due to the presence of S−3 anions.

                                               

Camera

A camera is a device that takes pictures. It uses film or electronics to make a picture of something. It is a tool of photography. A lens makes the image that the film or electronics "sees". A camera that takes one picture at a time is sometimes ...

                                               

Pinhole camera

A pinhole camera is a camera without a conventional glass lens. An extremely small hole in a thin material can create an image when all light rays from a scene go through a single point. In order to produce a reasonably clear image, the aperture ...

                                               

3D television

The function of 3D television is making a two-dimensional screen look like its picture is in three dimensions. This effect starts when we observe two shifted displays.

                                               

Flight information display system

A Flight Information Display System is a computer system in airports. It tells passengers about arrivals and departures as they happen. The computer system controls mechanical or electronic displays or TV screens. In large airports, there is a FI ...

                                               

Liquid crystal display

A liquid crystal display is a special thin flat panel that can let light go through it, or can block the light. The panel is made up of several blocks, and each block can be in any shape. Each block is filled with liquid crystals that can be made ...

                                               

Plasma display

Televisions with plasma display panel are much thinner than cathode ray tubes and are usually higher definition. Only a few television use a PDP. Plasma screens are made of two sheets of glass with two gases stored between the sheets. The gases a ...

                                               

DVD

A DVD is an optical disc capable of storing up to 4.7 GB of data, more than six times what a CD can hold. DVDs are often used to store movies at better quality than a VHS. DVDs can also have interactive menus and bonus features such as deleted sc ...

                                               

Telescope

A telescope is an important tool for astronomy that gathers light and directs it to a single point. Some do this with curved mirrors, some with curved lenses, and some with both. Telescopes make distant things look bigger, brighter and closer. Ga ...

                                               

Allen Telescope Array

The Allen Telescope Array was developed by the SETI Institute and the Radio Astronomy Laboratory at the University of California, Berkeley to construct a radio interferometer that is dedicated to radio astronomy observations. At the same time, it ...

                                               

Arecibo Telescope

The Arecibo Telescope is now destroyed by a collapse. The radio telescope was a 305 m 1.000 ft spherical reflector dish built into a natural sinkhole at the Arecibo Observatory which was completed in November 1963. For more than 50 years, the Are ...

                                               

Cassegrain telescope

Cassegrain telescopes are reflector telescopes that use two curved mirrors to make an image. The big primary mirror gathers and concentrates light. The small secondary mirror then reflects the light through the back of the mirror. The secondary m ...

                                               

Chandra Deep Field South

The Chandra Deep Field South is an image taken by the Chandra X-ray Observatory satellite. The location has, like the Lockman Hole, a relatively clear "window" through the clouds of neutral hydrogen gas in our Milky Way galaxy. This allows us to ...

                                               

Dobsonian telescope

A Dobsonian telescope is an Newtonian telescope design. It is "altazimuth-mounted". An altazimuth or alt-azimuth mount is a simple two-axis mount. It supports and rotates an instrument about two perpendicular axes – one vertical and the other hor ...

                                               

Giant Magellan Telescope

The Giant Magellan Telescope will be the worlds largest telescope when it is completed in 2025. Instead of one large mirror, the GMT will have seven separate mirrors working together. This will mean its collecting area is bigger than the actual m ...

                                               

Herschel Space Observatory

The Herschel Space Observatory is a European Space Agency instrument. It is the largest infrared telescope ever put into orbit. Herschel is named after Sir William Herschel, the discoverer of the infrared spectrum, double stars, and planet Uranus ...

                                               

Large Zenith Telescope

The Large Zenith Telescope is a 6.0 metre diameter telescope. It is in the University of British Columbias Malcolm Knapp Research Forest, about 70 km east of Vancouver. It is one of the largest telescopes in the world. A zenith telescope is only ...

                                               

Magellan Telescopes

The Magellan Telescopes are two 6.5m diameter optical telescopes at the Las Campanas Observatory in Chile. The two were named after the Portuguese explorer, Ferdinand Magellan. Each telescope is also named; the Baade after astronomer Walter Baade ...

                                               

Subaru Telescope

Subaru Telescope is the large telescope of the National Astronomical Observatory of Japan at the Mauna Kea Observatory on the island of Hawaii. From 1999 to 2005, its main mirror was the largest in the world. The telescope is named after the Plei ...