Frequency response
Systems respond differently to inputs of different frequencies. Some systems may amplify frequencies of certain range and attenuate the other frequencies. The way that the system output is related to the input for different frequencies is called frequency response. Frequency response means a graph where can be seen how something changes in different sound frequency. It is typically used in loudspeakers. Also audio crossovers way to function can be shown with frequency response.
The frequency response will be represented by two numbers and measured in Hertz (Hz) which is the unit of measurement for one frequency cycle. The first number represents the lowest bass frequency while the second number indicates the highest high-frequency an audio product can produce.
Sukhoi Su-25
The Sukhoi Su-25 is an attack aircraft designed and built in the USSR, and after in Russia. It was used by Soviets militaries during the war in Afghanistan. Foreign operators are mainly former Warsaw Pact countries and states near the communist regimes. NATO called it "Frogfoot". First designed by Kenan and Haydn Douglas Griffiths of the soviet Air force research and development. Then The idea was expanded on by Eryk Deryniowski who then Went to transfer the idea on to Sukhoi.
Audio crossover
Audio crossover is an electric circuit that separates low and high audio frequencies in a signal. It is needed because very small loudspeakers (tweeters) would break if fed by low frequencies. Likewise, bigger speakers (subwoofers) are not able to play higher frequencies purely.
Audio crossovers are divided to passive or active crossovers. Typical components used with passive crossovers are capacitors inductors and resistors. If passive crossover uses resistors to adjust loudness, those generate heat. Instead, active devices typically use resistors and capacitors with other audioelectronic components and those typically don't consume so much electric power. Also, active crossovers are easily built to be adjustable. Still, that doesn't mean that using passive crossover means low quality.
Hawker Hurricane
The Hawker Hurricane is a famous British military aircraft of World War II. This was the main fighter used by the RAF during the Battle of Britain. It was later outclassed by the Supermarine Spitfire. "Sea Hurricane" was a navalized variant, used by Fleet Air Arm.
Hawker Siddeley HS-748
The Hawker Siddeley HS-748 is a British civilian aircraft. Designed and built as an airliner it was also used by militaries as cargo aircraft and for aerial test support.
It can carry between 45 and 50 passengers. Andover is a modified military variant.
Airbus A318
The Airbus A318 is a European airliner designed and built from the Airbus A319. It is the smallest aircraft built by Airbus. It can carry between 107 and 132 passengers. Air France was in 2013 the biggest operator with 18 examples.
CASA C-212 Aviocar
The CASA C-212 Aviocar is a Spanish twin-turboprop aircraft. Designed and built as a cargo aircraft, it is also a light airliner. It is used both by civilians and militaries. US Air Force use some as C-41 to support special forces. Some variants are built for reconnaissance and maritime patrol.
Eu, Seine-Maritime
Eu is a commune of Seine-Maritime near Le Tréport. By the river "Bresles", it marks the border with Picardie. This commune is famous for its castle and for its Collegiate church.
Akaa
Akaa is a city in Finland. About 17,000 people live there. Nearby municipalities include Hämeenlinna, Lempäälä, Urjala, Valkeakoski and Vesilahti. In Akaa is the biggest mämmi factory in world. There were mämmi-eating competitions in 2005 and 2007.
Mämmi
Mämmi is a traditional Finnish food. It is similar to porridge. Originally, it was eaten only in western Finland. It is served cooled with cream and sugar.
Hanko
Hanko () is a city in Uusimaa, Finland. As of January 2014, about 9,100 people lived there. More people come to live in Hanko during the summer. Hanko is the most southern municipality in Finland. The municipilaty is surrounded by sea on three sides. Many of the people in Hanko speak Swedish instead of Finnish. Nearby municipalities include Kemiönsaari and Kemiönsaari.
Rosvopaisti
Rosvopaisti is a traditional Finnish food. It is cooked in a 50 cm-deep hole. At the bottom of the hole is put a camp fire. It is cooked there for 3-4 hours. After that, a steak is put in the hole. Cooking takes about 8-12 hours.
Gunnora
Gunnora (or Gunnor) (–), "Duchess" of Normandy, was the wife of Richard I, Duke of Normandy. She was an important figure in his reign and those of her sons.
Gunnora belonged to a family from the Pays de Caux area in Normandy. Gunnora was probably born . Her family was very influential in western Normandy and Gunnora was said to be very wealthy. Her marriage to Richard I was of great political importance. It allied him with a powerful rival family in the Cotentin. Her brother, Herfast de Crepon, was the of a great Norman family. Her sisters and nieces married some of the most important nobles in Normandy.
At the time the Normans were used to more than one kind of marriage. Richard I wanted his son Robert to become the Archbishop of Rouen. He was told the church would not allow it because he and Gunnora were not married in a Christian ceremony. So he married Gunnora "according to the Christian custom", making their children legitimate in the eyes of the church.
Gunnora signed many ducal charters up into the 1020s. She was skilled in languages and had an excellent memory. She was a source of information on Norman history for Dudo of St. Quentin. Her husband depended on her as is shown in the couple's charters where she held several important positions. She was at times regent of Normandy, a and a judge. In a typical roll for a medieval aristocratic mother, she was an between her husband and their oldest son Richard II. As Richard I's widow she is mentioned as being active in her sons' careers.
Gunnora was a founder and of Coutances Cathedral and laid its first stone. In one of her own charters after Richard's death she gave two pieces of land (called allods) to the abbey of Mont Saint-Michel. These were Britavilla and Domjean which were part of her dowry. She gave them for the soul of her husband, for her own soul and that of her sons "count Richard, archbishop Robert, and others..." She also signed a charter, , to that same abbey as "Gonnor matris comitis" (Gunnor, mother of the count). Gunnora, as wife and countess, was able to use her influence to see her kin favored, and several of the most prominent Anglo-Norman families on both sides of the English Channel are descended from her, her sisters and her nieces. Gunnora died .
Richard and Gunnora were parents to several children:
Stockholm City Hall
The Stockholm City Hall () is the municipal building in Stockholm in Sweden. It is on the island of Kungsholmen. It was built between 1911 and 1923, with Ragnar Östberg being the architect. The Stockholm Municipality council meetings are held here. Each year on 10 December, the Nobel Prize party is held here.
Stockholm Palace
The Stockholm Palace () is the royal castle in Stockholm in Sweden. It was built in the 18th century, after a fire in 1697 destroyed the old castle Tre kronor.
Riddarholmen Church
The Riddarholmen Church () is a church building in Stockholm, Sweden. It belongs to the Church of Sweden. It is on the island of Riddarholmen. Several Swedish monarchs are buried here.
It is one of the oldest building in Stockholm, and dates back to the Middle Ages.
Royal Chapel, Stockholm
The Royal Chapel () is a church inside the Stockholm Palace. It belongs to the Church of Sweden. It was opened in 1754.
Adolf Fredrik Church
Adolf Fredrik Church () is a church building in the town of Stockholm in Sweden. It belongs to the Church of Sweden. It was opened on 27 November 1774. In its graveyard, former Swedish prime ministers Hjalmar Branting and Olof Palme have been buried.