A laser printer is a printer for computers. It uses laser or LED-technology to get small particles of toner from a cartridge onto paper. Very often, this costs less to use than the ink of inkjet printers. Laser printers often print text more neatly than inkjet printers, but print photos less clearly. Printing on photo paper or coated paper designed for inkjet printers can damage the laser printer's drum and fuser unit.
The laser printer was first invented by a team at Xerox in 1969. The first laser printer was called the Xerox 2000.
Laser printing is a process which typically involves seven steps:
Lawrencium
Lawrencium is a chemical element. It is also named eka-lutetium by some people. It has the symbol Lr. It has the atomic number 103. It is a radioactive element that does not exist in nature. It has to be made. Lawrencium is made from californium. The isotope that has the longest half-life (Lr) has a half life of about 3.6 hours.
No uses for lawrencium are known. What lawrencium looks like is not known because not enough has been made to see it with human eyesight.
Is a Block-D Group3 Period 7 element. Discovered by Albert Ghiorso and co-workers in 1961, in California. Named after Ernest O. Lawrence, inventor of the cyclotron, a research instrument with which several new elements have been found/made.
Darmstadtium
Darmstadtium is a chemical element. It has been named ununnilium (Uun) or eka-platinum but is now named darmstadtium. It has the symbol Ds. It has the atomic number 110. It is a transuranium element.
The element is named in honor of German city Darmstadt.
Darmstadtium is a radioactive element that does not exist in nature. It has to be made. The isotopes with an atomic mass from 267 to 273 have very short half-lifes. The half life of these isotopes is measured in milliseconds. Isotopes of darmstadtium with an atomic mass of 279 and 281 were synthesised after the other isotopes. Ds-279 and Ds-281 decay more slowly. The isotope with an atomic mass of 279 has a half life of 180 milliseconds and Ds-281 has a half life of 11.1 seconds.
No uses for darmstadtium are known. What darmstadtium looks like is not known because not enough has been made to see it with human eyesight.
Darmstadtium was first made on November 9, 1994. It was made at the Gesellschaft für Schwerionenforschung (GSI) in Darmstadt, Germany. Only a few atoms of it were made. It was made by bombarding a lead target with nickel. A nuclear fusion reaction happened and made the element.
This is shown by the equation below that is the reaction that happened. Pb is the symbol for lead, Ni is the symbol for nickel and n is the symbol for a neutron.
The element was named for Darmstadt which was the place of its discovery. The GSI is in Wixhausen, a part of the north of the city of Darmstadt. The new name (darmstadtium) was given to the chemical element by the IUPAC in August 2003.
Wampanoag
The Wampanoag were a Native American tribe. They lived in what is now the American region of New England. The Wampanoag tribe helped the English settlers to survive, after they arrived in the "Mayflower".
They caught a bacterial infection called leptospirosis or Weil's syndrome in the early 17th century. It caused a many deaths and damaged their society greatly, though their descendents still survive today.
Mandir
Hindu temple or Mandir is referred to a place where Hindus go to worship gods in the form of various deities. Many Hindu temples are filled with wooden and stone arts like pashupatinath temple. A mandir is a spiritual place for Hindus. It is the landmarks around which ancient arts, community celebrations and economy were developed. as well as this the mandir has been recognised for
It is believed that the Murtis are stone or wooden images of idols ceremonially infused with the divine presence of God. They worship with arts and other ceremonies.
Hindus believe that gods and goddesses will answer the prayers of the faithful and inspire spiritually. For them, the temple also acts as a contact between the gods and goddesses and the worshipers. They also believe that the gods and goddesses will grant their wishes and protect them from danger.
In Hinduism gods are represented in various forms. Sometimes gods or goddesses are represented in a human form like Shiva, Vishnu, Saraswati or Kali. Sometimes there are gods goddesses in human and animal fused form like Ganesh. Sometimes they are also represented in plants and non-living form like Tulsi and Shaligrams. Murtis are made according to the prescriptios of the ilpasastra, and then installed by priests through the prana pratishtha ceremony. Afterward the divine personality is believed to be present in the Murtis.
To show respect, Hindus give gifts and food to the murtis. They are treated with respect and worshipped everyday. If a temple is a family temple it is treated as part of the family. Some Hindus also offer a part of their daily food to the god or goddess. They are given clothes and are changed at certain times. When people..
Kitchener, Ontario
Kitchener is a city in Ontario, Canada. Kitchener is in Southwestern Ontario and is near Toronto, Hamilton, Mississauga and London. It is in Waterloo Region. Other cities in Waterloo Region include Waterloo and Cambridge. Sometimes Kitchener, Waterloo, and Cambridge are known as the "technology triangle". It is on the Grand River, which leads to Lake Erie.
At first, Kitchener was called Berlin. When World War I started it seemed like a bad idea to have a city named after the capital of Germany. The city was renamed Kitchener, after a British general, Herbert Kitchener. Kitchener then slowly became a prosperous city as it is today.
A rapid transit system is planned to be added in the Waterloo Region.
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Spring (water)
A spring is a place where groundwater flows out of the ground. A spring may flow the whole year or only sometimes. This depends on the water getting into the ground all of the time (rain) or only once in a while (snow melting).
Water from a spring often flows downhill, along the land. This is how rivers start.
Some springs produce water that is good for health reasons. Sometimes towns grow by these springs because many people who are ill come there to get better. Such towns are called spa towns.
Thorium
Thorium is a chemical element in actinide group. It is a weakly radioactive metal. It has a shiny, silvery white color. It has the chemical symbol Th and the atomic number 90. Natural thorium has an atomic weight of 232. Thorium is named after Thor, the Norse god of thunder. Its ores are found in nature, especially in India, the United States, and Australia. Many scientists believe thorium would make a good source of nuclear fuel because it makes much less waste and is four times as common as uranium. It makes 3,200,000 times as much energy as coal and 200 times as much energy as uranium, because natural uranium is mostly non-fissile isotopes. Scientists believe that there is enough of it to power the world for thousands of years.
River source
The source of a river or stream is the original point from which the river flows. It may be a lake, a marsh, a spring or a glacier. This is where the stream starts.
The source is the farthest point of the river stream from its estuary or its confluence with another river or stream. Rivers are usually fed by many tributaries. The farthest stream is called the head-stream or head water. There is sometimes disagreement on which source is the head water, hence on which is the true source.
A lake fed by many rivers is sometimes called the source of the bigger river flowing out of it. For example, Lake Victoria is often called the source of the Nile, as the rivers that flow into it have names of their own.
Headwaters are usually in mountains. Glacial headwaters are made by melting of glaciers.