Jumat, 14 Januari 2011

History of Inventions and Innovations Radio


History of Inventions and Innovations Radio

The history of invention and innovation following the radio I quoted from various sources, including Wikipedia. It feels less afdol when we mengdengarkan radio every day but do not know the origin of the radio itself.

Radio is a technology used for signal transmission and modulation by electromagnetic radiation (electromagnetic waves). This wave passes and travel by air and can also travel through the vacuum of space, because this wave does not require the carrier medium (such as air molecules).

Radio waves are a form of electromagnetic radiation, and is formed when electrically charged objects is modulated (increased frequency) at frequencies contained in the radio frequency (RF) in an electromagnetic spectrum. These radio waves are in the range of 10 hertz (Hz) to several gigahertz (GHz), and electromagnetic radiation moves by way of oscillating electric and magnetic.

Other electromagnetic waves, which have frequencies above the radio waves include gamma rays, X-rays, infrared, ultraviolet, and visible light. When the radio waves transmitted through the cable, the oscillation of electric and magnetic fields are expressed in the form of alternating current and voltage on the cable. This can then be converted into an audio signal or any other that carries information.

Although the word 'radio' is used for matters relating to the receiver of sound waves, but wave transmission is used as the basis of the wave on television, radio, radar and cell phones in general.

Basic theory of electromagnetic wave propagation was first described in 1873 by James Clerk Maxwell in his paper at the Royal Society about the dynamics of electromagnetic field theory (in English: A dynamical theory of the electromagnetic field), based on the results of her research work between 1861 and 1865.

In 1878, David E. Hughes was the first to transmit and receive radio waves when he found that the induction balance caused disruption to phone product. He demonstrated his discovery to the Royal Society in 1880 but only say it was just an induction.

Is Heinrich Rudolf Hertz who, between 1886 and 1888, the first time to prove Maxwell's theory through experiment, demonstrating that radio radiation had all the wave properties (now called Hertzian waves), and found that the electromagnetic equations can be formulated into a partial differential equation called the wave equation.

Many of the early use of the maritime radio, for sending telegraphic messages using Morse code between ships and land. One of the early users included the Japanese Navy spy on the Russian fleet at the Battle of Tsushima in 1901. One use of the most memorable was at the time of the sinking of the RMS Titanic in 1912, including communications between operators on a sinking ship and nearby ships, and communication to ground stations to register the saved.

Radio used to channel commands and communications between the Army and Navy on both sides in World War II, Germany uses radio communications for diplomatic messages when the underwater cable is cut by the British. United States convey Fourteen Principal President Woodrow Wilson to Germany via radio during the war.

Press start to be done in the 1920s, with the popularity of radio, especially in Europe and the United States. In addition to the broadcast, broadcast point-to-point, including phone and re-broadcast radio program, became popular in the 1920s and the 1930s.

Role Marconi

World of radio innovation record the names Guglielmo Marconi, the inventor of radio. He was born in Bologna, Italy, April 25, 1874. His father, Giuseppe Marconi authentic Italian farmer and his mother, Annie Jameson is the son of the owner of Daphne Castle in Ireland, who was signed as a British territory. He went to Bologna, Florence, and Leghorn.

Since childhood he was interested in working Maxwell, Hertz, Righi, until the Lodge. In the age of 21 years, 1895, he made a laboratory in his father's house, in Pontecchio. He conducted research about radio waves - when it referred to as "Hertzian Waves" - to send a telegraph signal. It was only through the telegraph wires. He has managed to send a telegraph signal for a distance of about 2 kilometers. Findings radio practically in the doorway so he asked for the support of Post and Telegraph Department of Italian. But the bureaucrats are not interested in Italy, even closing the door for him.

Marconi did not despair, a year later he contacted the British Postal Service. William Preece, chief engineer Postal Service England, Marconi was willing to meet with him and who later came to showcase his creations radio capability on the plains of Salisbury and, later, across the Bristol Channel. Preece was impressed, and eventually founded the company Marconi Wireless Telegraph & Signal The Company Limited in 1897, which later transforms into Marconi's Wireless Telegraph Company Limited.

In two years, 1899, he has built a radio between France and Britain, followed later between the U.S. and Britain.

Over a decade until 1912, he patented a number of findings to improve the radio system he created. In 1909 he received the Nobel Prize in physics.

In 1914, Marconi was called into the Italian Army. He became a diplomat Italy to America in 1917.

Once the government no longer part of Italy, he returned to the laboratory. By World War II, in 1935, he demonstrated the latest findings, namely Radar. Two years later, July 20, 1937, Marconi died in Rome.

Role Howard

Edwin Howard Armstrong was recorded as the inventor of FM radio. He was born on December 18, 1890 in New York City. His father was publisher of books and his mother a teacher. At the age of 14 years, Armstrong read a book written by Marconi telegraph. He was very impressed with Marconi, just that he wanted to improve the creation Marconi radio. So Armstrong had intended to make clear-voiced radio while making their own radio station at his home. To that end, Armstrong entered the Faculty of Electrical Engineering at Columbia University. He graduated and became a great teacher and electrical engineer.

In 1912, Armstrong managed to make a regenerative circuit and feedback circuit. He also studied a hollow tube made of De Forest, who named trioda and audion. Later, Armstrong combines its discovery, with a hollow tube made of De Forest. The results of the exit tube sound a thousand times more clear.

Unfortunately, De Forest's invention is considered his property. They fight the copyright, for 14 years in court. Finally, De Forest becomes the winner, because judges do not understand the science of electricity.
But scientists still think Armstrong was the inventor of the circuit and FM radio. He was awarded the Franklin Medal and was nicknamed "Father of Circuit". On February 1, 1954, Armstrong died in New York. He was synchronized with the old inventor, in the field of electricity such as Amphere and Bell.
READ MORE - History of Inventions and Innovations Radio
READ MORE - History of Inventions and Innovations Radio

Minggu, 02 Januari 2011

Sasando, traditional musical instruments


Sasando, traditional musical instruments that originated from the island of Rote, East Nusa Tenggara, one might say almost drowned in traffic or the music industry today. Stringed instrument which became one of the important sound property in the archipelago that is hardly heard by audiences in their own country.

PROPERTY sound stored in the maestro Sasando following will be displayed in music performance-Quantum Megalithic on June 29 to 30 next at the Jakarta Convention Center.

Sasando of the material may seem simple. Traditional Sasando using nine strings attached to a bamboo tube. That's why he is classified as a type of tube-tube zither-siter. As a resonator, used young palm leaves that were held together to form a cavity half-circle. Equipment that is played by lap and plucked with the fingers both hands.

In the treasure of sound in the archipelago, including the unique Sasando. Instruments with the system scales heksatobik or six tone has a melody that sounded another style compared to other music in Indonesia.

"The melody using downward force, descending movement, which is reminiscent of the African style. This is unique to Indonesia. It should be heard and appreciated," said Siagian about Sasando Rizaldi ethnomusicologists and traditional compositions.

Similar tubes siter Sasando found in Southeast Asia, such as the Philippines, Vietnam, and Malaysia, which produces a lot of bamboo. A number of places in Indonesia are also familiar with similar stringed instruments Sasando. In Mandailing known gondang fur, while at Karo-keteng keteng there.

"The difference with Sasando, fur and keteng gondang keteng function-rhythmic, not melodic," said Rizaldi.

In the international association order in the past, influential Sasando even get to Madagascar. The country was also familiar with similar stringed musical instrument called the valiha Sasando taken as the national instrument of Madagascar.


Sasando become part of everyday life Hendrik Pah (59), artists as well as makers Rote Sasando origin who now live in Kupang, East Nusa Tenggara (NTT). Together with his colleague, Nane Messakh, Hendrik will play Sasando in performance-Quantum Megalithic held to commemorate 40 years of Kompas daily.

Hendrik stay away from the hustle and bustle of big cities. His home is modest in Oebelo Village, Central Kupang, NTT, it is located in the vicinity of the cornfield. Walled houses with dirt floors were made of palm leaf midrib. Roofs made of palm tree leaves. The basic ingredients of the house was not far different from the basic ingredients Sasando musical instrument that uses palm leaves as a cavity resonator.

In the backyard there are devices to make Sasando. Hendrik using technology understated for a lathe of wood used as a fastening strap Sasando.

The tools that function as a kind of lathe. The device is made of palm leaf midrib is stuck in the ground. At the end of a flexible arch was attached a rope that is connected to the pedal of the timber. Pedal arch and rope and it produces power that is used to drive the wheels. The wheel that is the player timber to be formed as a fastening strap Sasando.

From-paced life that's simple to make and play Sasando Hendrik who taught for generations his ancestors in his hometown on the island of Rote. Pah is a large family, including descendants of Sasando a well-known artists in NTT, particularly in the vicinity of Kupang. He played from one village to meet the call of those who hold the ceremony, starting from birth, marriage, until death.

Hendrik like singing Sasando and lives with his song. Human life cycle, from birth, marriage, until death, that he had come celebrate with Sasando and poetry. One night in Kupang, Hendrik and Nane Sasando while singing a duet played poems about life, about death. For those who already patterned with good pop music sound, singing Sasando Hendrik and his friends were probably going to sound strange, but that's a side of Indonesia, the forgotten.

Sasando in its development must deal with the changing times. In the past ei or strings Sasando skin incision is made from bamboo. There is also what makes the strings of mother-of-pearl leaves. Times have changed and the fibers of the motorcycle clutch wire was used as a rope Sasando. Some are choosing to use guitar strings.

Sasando also invited to enter the territory of pop culture. Zakarias Ndaong (27), a small kiosk owners Dalek Esa, in East Street, Oesapa, Kupang, skillfully bringing pop songs like I Have a Dream from ABBA which was later made famous boyband Westlife.

Zakarias seemed proud to play Sasando folding it in front of the guests who visit his stall. He then wore hats ti'ilangga, Rote typical hat made of palm leaves. He also played another ABBA song, namely Chiquitita. He also played a song Mother How are You Today. A buyer asks Zakarias play traditional songs.

By guest introduction he then asked to play the song "Japanese". Apparently that meant it was Kokoronotomo Japanese songs, pop songs that also happen to lyrical Japanese. The song was never popular in Indonesia in the mid-1980s.

Apparently, Sasando also follow the development of pop music. At least, Zakarias also ready to play the song Sheila on 7 to Peterpan song What She being popular. Presumably, Zakarias world is familiar with slang. Looking to the chamber behind the kiosk was seen posters pop band All Saints, 5ive until collection of the group The Rockers of '90.

To be used to play I Have a Dream, Kokoronotomo, or What She Did that, then Sasando must be stem with diatonic pitch. According Zakarias, the most widely purchased Sasando people are diatonic. In order to compete with the roar of time, Sasando also created an electronic version which is equipped with electric guitar like a spool device. For the electric version, Sasando had stripped lontarnya resonator.

For the sake of practicality, emerged a Sasando fold. Tangkupan palm leaves on Sasando can be folded like the blades of the fan that could be closed neatly. That Sasando adapted to the urban lifestyle practical all who created all things completely portable, easy to carry and does not take place.

What may make, the lifestyle community with high mobility need something very practical. Is not the Village Oebelo people now prefer to use colorful plastic chairs, a mass product that replaces wood chairs with raw materials increasingly difficult to obtain.

Sasando also has to deal with the global market. He was in the same arena with mass industrial products Sasando surrounding habitat. Not far from the kiosk was strewn Sasando LA Lights cigarette ad posters to Coca-Cola. There is also a bakery with which the fancy Paris Bakery. There is also a Toyota dealer. When Zakarias're playing Sasando, on the highway passing truck carrying dozens of motorcycle.

Sasando in the midst of a changing society: rapid mobility, consumerism, culture market. Sasando became the production of goods by following the market culture. Sasando sold the price varies according to type. Sasando folding sold at around USD 500,000. For electrical Sasando installed price of about Rp 1 million. Sasando conventional, nonlipat, sold at different prices in every crafter. There was a sell USD 100,000 to USD 150,000.

There is also a small souvenir Sasando measured about seven inches, was sold for Rp 50,000. Sasando souvenir version of this course can not be played. He is often used as souvenirs and can be displayed as a decoration without the clink-clink-beautiful. Sasando that changes could be a reflection of the changing face of the nation. Hopefully dentingnya still managed to be heard by people who like studying this recall his own face.
Troubled Crying Grass and Bamboo: The Music of Bread

The island of Roti is located just southwest of West Timor in the semi-arid Tropics of Eastern Indonesia. The recording Troubled Crying Grass and Bamboo: The Music of Bread features examples of the two main musical genres in Bread, Poetic song accompanied by sasandu tube zither, and the meko gong and drum ensemble. It Also features a soundscape collage of natural and man-made sounds from Bread, Including the sounds of morning, a circle dance, night, a story-teller, the sea, and the Sasando violin, an expanded, diatonic form of the sasandu.
READ MORE - Sasando, traditional musical instruments
READ MORE - Sasando, traditional musical instruments
.::BY JUMBHO-MY AT HOME IN THE JEPARA CITY OF BEAUTIFUL::.