A centrifuge is a device with a motor in it, which is used to spin an object with high speed. This high speed spinning forces the object outwards. This force is used for several purposes:
Shah
Shah () is a Persian word which means the king or ruler of a country. This word is used in different countries in the world, including Iran, India, Pakistan and Afghanistan. Presently the term "Shah" is used as a surname commonly by many people in India, Pakistan and Afghanistan who are Hindu, Moslem and Jain. Many Indian names which have "Shah" in them; the most famous of them is Shah Jahan, who as the Emperor of India ordered the creation of Taj Mahal. One possible etymology of the chess term "checkmate" is the Persian "shah mat", meaning "the king cannot escape"
The term "Shah" often means Mohammad Reza Pahlavi, Shah of Iran from 1949 to 1979.
Approval voting
Approval voting is a voting system used for elections. In approval voting, each person can vote for any number of candidates they like. The votes for each of the candidates are counted, and summed up. The candidate or candidates with most votes are chosen as the winners of the election.
Supporters argue it to be better than plurality voting because voters can vote for the lessor of evils advertised by the media but also for their favorite candidates. If their goal is just to vote against a candidate, they can do so more forcefully by approving all other candidates. Ballots can easily be hand counted if voters do not trust computers, which might be needed for Instant Runoff Voting. Vote spoiling is not an issue with approval voting, so many candidates may run for office.
Opponents argue that voters still have some of the problems of plurality voting, which is that they do not know if they will need to compromise their vote or not(tactical voting). Giving approval to a compromise candidate could result in that compromise candidate winning, when their favorite would have won had they not given approval to the compromise candidate. It is possible for 51% of voters (a majority) to view a candidate as their first choice but for that candidate to lose to a compromise candidate because many of those voters approved the compromise candidate as well. Not knowing whether or not to compromise is a problem with all voting systems when at least three strong candidates run.
Agar plate
An agar plate is a Petri dish that contains agar and some nutrients (food for the microorganisms). It is used to grow microorganisms. For example, a blood sample of a patient may be put on agar plate, to let the bacteria that made the patient sick grow. These bacteria can then be identified using a microscope to let the doctor choose the appropriate treatment of the patient.
When microorganisms grow on the agar plate, they form colonies. Each colony has similar genetic characteristics.
There are many types of agar plates that are used, but the two main types are defined and undefined. An undefined plate's nutrients aren't exactly known, but everything in a defined plate is accounted for.
Mansur Al-Hallaj
Abū al-Mughīth Hossein ibn Manūr Al Hallāj (c. 858 - March 26, 922) () or Hallaj was a Persian poet and writer. Hallaj was born in Shūshtar, Iran. Hallaj memorized the Quran when he was young. He taught Sufism in Baghdad. Muslim scholars were against his teachings. He was imprisoned in Baghdad for eleven years. In the end, he was tortured and he was beheaded by Abbasid rulers.
Again
"Again" is the name of many songs:
Conical measure
A conical measure is a piece of laboratory equipment which is used to store and mix liquids.
A conical measure is a conical, or in the shape of a cone. It has a wide top so that liquids can be poured in more easily and marks on the side of it to help measure the amount of liquid more easily. They can be made of plastic or glass.
A conical measure can be used in any pouring, measuring or mixing of liquids. This means that it is useful in:
They are also useful in homes as a measuring cup for cooking.
Conical measures are not very accurate, but are easy to use and to mix liquids in.
Unsuri
Abu Al Qasim Hasan ibn Ahmad Unsuri Balkhi (d. 1039/1040) () or Unsuri was a Persian poet. He was born in Balkh, in modern Afghanistan. He became the poet of Sultan Mahmud Ghaznavi. Mahmud Ghaznavi called him "King of Poets". All of his poems are in Persian. His poems are collected in a Divan.
Ali Shariati
Ali Shariati Mazinani (1933-1977) (Persian: علی شريعتی مزینانی) or Shariati was an Iranian Muslim philosopher, sociologist, poet and writer.
Shariati was born in 1933 in Mazinan, Iran. He studied sociology in the University of Paris. He returned to Iran in 1964. When he returned to Iran, the Shah regime arrested and imprisoned him for political reasons. He was released in 1965. Shariati began teaching at the University of Mashhad. He began lecturing at the Hosseiniye Ershad institute in 1967. The Shah regime arrested him again. When he was freed in 1975, he was not allowed to teach or publish anything. Shariati decided to leave the country for England. Three weeks later he died in Southampton under suspicious circumstances. He was buried in Damascus, Syria.
Kisai Marvazi
Abul Hasan Abu Ishaq Kasa'i Marvazi (or Marvzi) (953 - 10th century)
() or Kasai is a Persian poet. He was born in Marv. He was a poet in the court of Mahmud Ghaznavi. He converted to Shia Islam. He has praised Ali ibn Abi Talib many times in his poems. All of his poems are in Persian. His poems are collected in a Diwan.
Farrokhi Sistani
Abul Hasan Ali ibn Julugh Farrukhi Sistani (c. 980 - 1037 or 1038) () or Farrokhi is a Persian poet. Farrokhi was the best poet in the court of Mahmud Ghaznavi. All of his poems are in Persian. His poems are collected in a Divan.
Mu'izzi
Amir Abdollah Muhammad Mu'izzi (1048-1125) was an 11th century and 12th century poet. He was from Persia, and was the poet laureate of Sanjar. He was from the village of Nisa. He is considered one of the great masters of the Persian panegyric qasideh.
He lived in the courts of Malik Shah I and Sultan Sanjar. His "divan" of 18,000 distichs remain. Anvari says Mu'izzi copied the verses of other poets (this cannot be proven for certain). Anvari himself is known to have copied Mu'izzi's verses. Mu'izzi is said to have died by an arrow shot by the King's son in 1125 for unknown reasons. He was accidentally shot by Sanjar.
Ghazel of Mu'izzi in Tajik:
translation -
Khaqani Shirvani
Afzal ad- Din Badil Ibrahim ibn Ali Nadjar Khaqani Shirvani (1120-1190) () or Khaghani Shirvani was a Persian poet. His most famous poem is "The Arch of Madain"(). He wrote the poem book "Tohfat-ul Iraqein" (in Persian: تحفه العراقين meaning A Gift from the Two Iraqs) in his journey to Mesopotamia. The Shirvanshah ordered his officers to imprison him. Khaghani was in prison for nearly five years. In prison, he wrote the poems called Habsiyye (, meaning "The Prison Book"). After he was freed, he moved to Tabriz. Khaghani died in Tabriz.
The Seasons (Haydn)
The Seasons (German: "Die Jahreszeiten") is an oratorio by Joseph Haydn. An oratorio is a long musical work with orchestra, choir and solo singers. It usually tells a story from the Old Testament of the Bible. "The Seasons" is different. It is about the four seasons of the year. It describes nature and people's relationship to nature during the year.
"The Seasons" was the last big work that Haydn composed. He composed it in 1801. By this time he was the most famous composer in Europe. Mozart had died ten years earlier, and Beethoven was a young man who was just starting to become famous. Haydn was nearly 80 years old and his health was not good. Although he lived another eight years "The Seasons" was the last big work he wrote. Soon after he had composed it he stopped composing altogether.