Hydrophone is a microphone which is used to measure sound under water. It uses an echolocation system. You would use a hydrophone if you wanted to examine the sound of fish or maybe if you wanted to listen to find out if there is any sea creature in this part of the ocean. Using several hydrophones make the sound better by making it louder and making it able to reach further distances it is even possible to listen in a specific direction.
The first hydrophone was used by , a Canadian inventor in 1914.
Narva
Narva is the third biggest city in Estonia. Around 64,000 people were living in Narva as of January 2011. Danish people established Narva in 1223.
Rochester, Kent
Rochester is a town in Medway, North Kent. It is famous for Rochester Cathedral.
It also has a railway station, Rochester railway station.
8th century BC
The 8th century BC started the first day of 800 BC and ended the last day of 701 BC.
Medway
Medway (commonly called the Medway Towns) is a large urban area in North Kent, near South East London. It has around a quarter of a million people. The Medway Towns are made up of 5 towns: Strood, Rochester, Chatham, Gillingham and Rainham. It is named after the River Medway.
Karhu
Karhu (in english "The Bear") is Finnish brand of beer. It is the most popular beer in Finland. Its history begins in 1920, in Pori. Production of Karhu stopped in the early 1930s, but continued again from 1958.
Kruskal's algorithm
Kruskal's algorithm is a greedy algorithm to find a minimum spanning tree in a weighted, undirected graph. Joseph Kruskal first described it in 1956:
In this case, the shortest edge is the one with the lowest weight.
Download the example data.
Gillingham, Kent
Gillingham is a large town in Medway, North Kent. It has around 105,000 people, and a football team, Gillingham F.C..
It also has a railway station, Gillingham railway station.
Koff
Koff is Finnish brand of beer. Koff is one of the most popular beers in Finland. It is made by Sinebrychoffs, a Finnish company that advertices lager beers.
Olvi
Olvi is Finnish brand of beer. Olvi is mostly made from Finnish ingredients, besides "Humulus lupulus", which is from Bavaria.
Lapin Kulta
Lapin Kulta is Finnish, Hartwalls brand of beer. Traditionally it's been made in Tornio but 2010 production moved to Lahti.
A Werewolf Boy
'A Werewolf Boy' is a South Korean fantasy romance movie. It did well at the box office in 2012. The movie has been a huge box-office success by drawing audiences totaling 6,600,000 people in less than two months. The movie's lyrical atmosphere and the performance of the stars caught audiences’ eyes.
The movie starts with a flashback told by a grandmother, Suni. When a girl, Suni, lived in an isolated mountain village for her recuperation in 1965. A boy who looks like a beggar suddenly appeared. Nobody knows his origin, his family and how old he is. He cannot speak. He only growls like an aniimal. At first, Suni and can't get used to his strange behavior such as eating food with his hands ravenously. They grow fond of him gradually, so they named the boy Chulsu.
Jitae, who is a landlord of the house Suni is living, loves her. He begrudges Chulsu being close to Suni. With experts and old documents, Jitae found out that Chulsu was one of the abandoned children in the Korean war. Now he is a kind of werewolf boy. He is genetically modified by a scientist to make a more powerful soldier. Jitae slandered Chulsu because Chulsu has extreme strength unlike a normal human being. His body temperature is 46 degrees Celsius. Because of Jitae’s lies, people try to kill Chul-su to protect themselves. Suni decides to leave the village to keep him from being injured.
After 47 years, when Suni visits the village to sell the house, she sees Chulsu again. She is moved by his long waiting. Chulsu reads a fairy tale book to Suni which they promised to read together 47 years ago. However, she has to leave him again and return to America. She leaves a message "Wait for me." again as she did when she was young. Chulsu waits for her believing that she will come back again someday.
The main actor, is a famous Korean actor. He achieves popularity through various kinds of movies and dramas. For example, , , "The innocent Man" and "Hearty Paws 2". The main actress, , is also a widely loved actress who made a big name through the movie "Speedy Scandle". Both of them rose to more fame with the movie "A Werewolf Boy".
"My prince", song by Park Bo-young
This is the song Suni sings to the accompaniment of a guitar for Chulsu in the movie. By seeing her singing mellifluously, Chulsu fell in love with her.
Harnai District
Harnai District () is a district in the Balochistan Province of Pakistan.
Mega (Chile)
Mega, whose letters stand for Red Televisiva Megavisión, is a Chilean television network.
Chilevisión
Chilevisión, whose letters stand for Red de Televisión Chilevisión, is a Chilean television network.
Coloratura
Coloratura is a term meaning florid singing in which singers demonstrate great agility with their voices. Although often associated with light sopranos, it can apply to any voice type such as tenor, mezzo-soprano, baritone, bass, especially in the bel canto repertoire.
High intensity training
High Intensity Training (HIT) is a form of strength training popularized in the 1970s by Arthur Jones. HIT focuses on performing quality weight training repetitions to the point of momentary muscular failure. The training takes into account the number of repetitions, the amount of weight, and the amount of time the muscle is exposed to muscle tension in order to maximize the amount of muscle fiber recruitment.
Beth Hatefutsoth
The Nahum Goldmann Museum of the Jewish Diaspora (or "Beth Hatefutsoth") is an history and anthropology museum in Tel Aviv, Israel. It is dedicated to the Jewish communities around the world. The museum was established in 1978 after 10 years of building. The museum is a part of the Tel Aviv University campus and also has an educational center to study about Jewish folklore. The museum is also a center to documenting and preserving the memory of Jews and Jewish families who have been killed or destroyed in anti-Semitic incidents.
International Institute for Terrorism Research
International Institute for Terrorism Research or International Institute for Counter-Terrorism (ICT) is an international non-profit research center located in Herzliya Interdisciplinary Center (IDC), Israel. The center explores terrorism in Israel and around the world and organizes international meetings with politicians from around the world.
1923 Great Kantō earthquake
The was a Japanese natural disaster in the Kantō region of the island of Honshū. The earthquake struck at 11:58:44 am JST (2:58:44 UTC) on Saturday, September 1, 1923. It lasted between 4 and 10 minutes.
This earthquake destroyed Tokyo, the port city of Yokohama, surrounding prefectures of Chiba, Kanagawa, and Shizuoka. It caused widespread damage. About 140,000 people died.
Tom Daley
Tom Daley (born 21 May 1994) is an English diver. He was born in Plymouth, Devon. He mainly dives from the 10 metre platform, both on his own and in synchro (diving at the same time with another person). He became the World Champion at the age of 15 in 2009.
Daley went to the 2008 Summer Olympics where he was the youngest athlete for Britain. He also went to the 2012 Summer Olympics where he came third in the 10 metre platform event. He has won many other medals. For example, at the 2010 Commonwealth Games he won two golds in the 10 metre platform: one for the individual event, the other for the synchro event with Peter Waterfield.
He has won the BBC Award for Young Personality of the Year three times.