Tripoli

Tripoli (Arabic: طرابلس‎, Ṭarābulus; Berber: Ṭrables) is the de jure capital city and the largest city of Libya. Tripoli, with its metropolitan area, has a population of about 3,200,000 million people. The city is located in the northwestern part of Libya on the edge of the desert, on a point of rocky land projecting into the Mediterranean and forming a bay.

Tripoli includes the Port of Tripoli and the country's largest commercial and manufacturing centre. It is also the site of the University of Tripoli. The vast Bab al-Azizia barracks, which includes the former family estate of Muammar Gaddafi, is also located in the city. Colonel Gaddafi largely ruled the country from his residence in this barracks.

Tripoli was founded in the 7th century BC by the Phoenicians, who named it Oea. Due to the city's long history, there are many sites of archaeological significance in Tripoli. "Tripoli" may also refer to the shabiyah (top-level administrative division in the current Libyan system), the Tripoli District.

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.

Tripoli, Libya

Tripoli was the capital of Italian Libya in the first half of the 20th entury. It was called Tripoli italiana in Italian language and the inhabitants were called Tripolini. Italian Tripoli was under Italian control from 1911 until January 1943: officially it disappeared in 1947 after the Peace Treaty following WWII.

History

During the Italo-Turkish War of 1911 Tripoli was conquered by the Italian Kingdom. The Italian fleet appeared off Ottoman Tripoli in the evening of September 28, 1911: the city was quickly conquered by 1,500 Italian sailors, welcomed by the population

By the 1912 treaty signed in Ouchy, Italian sovereignty was acknowledged by the Ottomans, although the local Caliph was permitted to exercise religious authority. Italy officially granted autonomy after the war, but gradually occupied the region of Tripolitania. Originally administered as part of a single colony, Tripoli and its surrounding province were a separate colony from 26 June 1927 to 3 December 1934, when all Italian possessions in North Africa were merged into one colony called "Italian Libya".