Lyon

Lyon or Lyons (UK /liːˈɒn/ or /ˈliːɒn/;French pronunciation: [ljɔ̃], locally: [lijɔ̃]; Arpitan: Liyon [ʎjɔ̃]) is a city in east-central France, in the Auvergne-Rhône-Alpes region, situated between Paris and Marseille. The correct spelling in French is Lyon, but the spelling Lyons is sometimes specified in English, particularly in newspaper style guides. Lyon is located about 470 km (292 mi) from Paris, 320 km (199 mi) from Marseille, 420 km (261 mi) from Strasbourg, 160 km (99 mi) from Geneva, and 280 km (174 mi) from Turin. The residents of the city are called Lyonnais.

The municipality (commune) of Lyon has a population of 500,715 (2013) and is France's third-largest city after Paris and Marseille. Lyon is the seat of the metropolis of Lyon, and the capital of both the department of Rhône and the region of Auvergne-Rhône-Alpes. The greater metropolitan area of Lyon, a concept for statistical purposes that is not an administrative division, has a population of 2,214,068 (2012), which makes it the second-largest metropolitan area in France after Île-de-France (Paris).

Radio

Radio is the use of radio waves is to carry information, such as sound, by systematically modulating some property of electromagnetic energy waves transmitted through space, such as their amplitude, frequency, phase, or pulse width. When radio waves strike an electrical conductor, the oscillating fields induce an alternating current in the conductor. The information in the waves can be extracted and transformed back into its original form.

Radio systems need a transmitter to modulate (change) some property of the energy produced to impress a signal on it, for example using amplitude modulation or angle modulation (which can be frequency modulation or phase modulation). Radio systems also need an antenna to convert electric currents into radio waves, and vice versa. An antenna can be used for both transmitting and receiving. The electrical resonance of tuned circuits in radios allow individual stations to be selected. The electromagnetic wave is intercepted by a tuned receiving antenna. A radio receiver receives its input from an antenna and converts it into a form usable for the consumer, such as sound, pictures, digital data, measurement values, navigational positions, etc. Radio frequencies occupy the range from a 3 kHz to 300 GHz, although commercially important uses of radio use only a small part of this spectrum.

UEFA Europa League

The UEFA Europa League, previously called the UEFA Cup, is an annual association football club competition organized by UEFA since 1971 for eligible European football clubs. Clubs qualify for the competition based on their performance in their national leagues and cup competitions.

Previously called the UEFA Cup, the competition has been known as the UEFA Europa League since the 2009–10 season, following a change in format. For UEFA footballing records purposes, the UEFA Cup and UEFA Europa League are considered the same competition, with the change of name being simply a rebranding.

In 1999, the UEFA Cup Winners' Cup was abolished and merged with the UEFA Cup. For the 2004–05 competition a group stage was added prior to the knockout phase. The 2009 re-branding included a merge with the UEFA Intertoto Cup, producing an enlarged competition format, with an expanded group stage and changed qualifying criteria. The winner of the UEFA Europa League qualifies for the UEFA Super Cup, and from the 2014–15 season onwards the winner of the UEFA Europa League also qualifies for the next edition of the UEFA Champions League. The winner enters at least at the play-off round (assuming they do not already qualify through domestic performance), and will enter the group stage if the berth reserved for the Champions League title holders is not used.

Radio broadcasting

Radio broadcasting is a unidirectional wireless transmission over radio waves intended to reach a wide audience. Stations can be linked in radio networks to broadcast a common radio format, either in broadcast syndication or simulcast or both. Audio broadcasting also can be done via cable radio, local wire television networks, satellite radio, and internet radio via streaming media on the Internet. The signal types can be either analog audio or digital audio.

In 2009, there were 3,494 radio broadcasting stations in the United States.

History

The earliest radio stations were simply radiotelegraphy systems and did not carry audio. For audio broadcasts to be possible electronic detection and amplification devices had to be incorporated.

The thermionic valve was invented in 1904 by the English physicist John Ambrose Fleming. He developed a device he called an "oscillation valve" (because it passes current in only one direction). The heated filament, or cathode, was capable of thermionic emission of electrons that would flow to the plate (or anode) when it was at a higher voltage. Electrons, however, could not pass in the reverse direction because the plate was not heated and thus not capable of thermionic emission of electrons. Later known as the Fleming valve, it could be used as a rectifier of alternating current and as a radio wave detector. This greatly improved the crystal set which rectified the radio signal using an early solid-state diode based on a crystal and a so-called cat's whisker. However, what was still required was an amplifier.

Kasper Dolberg

Kasper Dolberg (born 6 October 1997) is a Danish footballer who plays as a forward in the Ajax Youth Academy.

Club career

Dolberg is a youth exponent from Silkeborg IF. At 17 May 2015, he made his first team debut in a league game against Brøndby IF. He replaced Adeola Lanre Runsewe after 63 minutes in a 0-2 home defeat. In 2015 he signed a 3 year contract at AFC Ajax.

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