Топ-100

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Supercell

A supercell is a strong type of thunderstorm with a thick, rotating updraft. Supercell thunderstorms are the largest, most dangerous type of thunderstorms. There are really only two types of thunderstorms: supercell and ordinary, but some have fo ...

                                               

Wind

Wind is the flow of gases. On Earth, wind is mostly the movement of air. In outer space, solar wind is the movement of gases or particles from the sun through space. The strongest winds seen on a planet in our solar system are on Neptune and Satu ...

                                               

Beaufort scale

The Beaufort scale is a scale for measuring wind speeds. It is based on observation rather than accurate measurement. It is the most widely used system to measure wind speed today. The scale was developed in 1805 by Francis Beaufort, an officer o ...

                                               

Wind shear

Wind shear is a difference in either wind speed or direction over a fairly short distance in the atmosphere. Wind shear can be divided into two different types: horizontal and vertical wind shear.

                                               

Wind speed

Wind speed is the speed of the weather related air movement from one place to the next. Wind speeds usually mean the movement of air in an outside environment, but the speed of movement of air inside is also important in many cases, including wea ...

                                               

Andre-Marie Ampere

Andre-Marie Ampere was a French physicist or a mathematician who helped discover electromagnetism. An electrical unit called the ampere is named after him.

                                               

Electric charge

Electric charge is a basic property of electrons, protons and other subatomic particles. Electrons are negatively charged while protons are positively charged. Things that are negatively charged and things that are positively charged pull on each ...

                                               

Electric current

An electric current is a flow of electric charge. The equation of current is: I = Δ Q Δ t {\displaystyle I={\frac {\Delta Q}{\Delta t}}} where I {\displaystyle I} is the current flowing Δ Q {\displaystyle \Delta Q} is the change in electric charg ...

                                               

Electric potential

Electric potential is electric potential energy per unit of charge. Electric potential tells what the electric potential energy of a charged object will be for every coulomb of charge it has, or how many joules of energy there will be per coulomb ...

                                               

Electrical impedance

Electrical impedance is the amount of opposition that a circuit presents to current or voltage change. The two main ways to write an impedance are: see the 2nd figure, "complex impedance plane" With the resistance "R" real part and the reactance ...

                                               

Electricity

Electricity is the presence and flow of electric charge. Using electricity we can transfer energy in ways that allow us to do simple chores. Its best-known form is the flow of electrons through conductors such as copper wires. The word "electrici ...

                                               

Electrostatics

Electrostatics is the branch of physics that deals with apparently stationary electric charges. Electrostatics involves the buildup of charge on the surface of objects due to contact with other surfaces. Although charge exchange happens whenever ...

                                               

Michael Faraday

Michael Faraday was the son of a blacksmith who became one of the most famous scientists of the 19th century. He was sent to a local school to learn how to read and write. A local vicar paid for this, seeing his obvious intelligence. Faraday beca ...

                                               

Magnetic field

The magnetic field is the area around a magnet in which there is magnetic force. Moving electric charges can make magnetic fields. Magnetic fields can illustrated by magnetic flux lines. At all times the direction of the magnetic field is shown b ...

                                               

Magnetic flux

Magnetic flux is what generates the field around a magnetic material. It consists of photons, however, unlike the light we receive from the Sun, it is at a much lower frequency. This is why magnetic field lines are not visible to the naked eye. I ...

                                               

Magnetic moment

The magnetic moment of a magnet is a quantity that determines the force that the magnet can exert on electric currents and the torque that a magnetic field will exert on it. A loop of electric current, a bar magnet, an electron, a molecule, and a ...

                                               

Magnetism

Magnetism is a force that attracts or repels objects that have a magnetic material like iron inside them. In simpler words, it is a property of substances which pull closer or repel other objects. It is a subject in physics,

                                               

James Clerk Maxwell

James Clerk Maxwell was a Scottish mathematician, physicist and discoverer of Maxwells equations. Maxwell grew up in a rich religious family. In 1845, when he was only 14, he wrote a paper describing a way of drawing mathematical curves with a pi ...

                                               

Alessandro Volta

Count Alessandro Giuseppe Antonio Anastasio Volta was a Lombard physicist known especially for the development of the first electrical cell in 1800. He was born in Como in Lombardy, Italy. Volta worked on the electrophorus that makes a static ele ...

                                               

Chess notation

Chess notation is a method for writing down chess moves: after a player makes a move, both players write it down. This is compulsory in all organized chess events The system must have these elements: the move number, the piece moved, the square i ...

                                               

Aries

Aries is the astrological Zodiac sign that represents the constellation Aries. In the tropical zodiac, Aries is from March 21 to April 20 beginning at the vernal equinox. Under the sidereal zodiac, it is now from April 15 to May 15. The opposite ...

                                               

Leo (astrology)

Leo is the fifth astrological sign of the Zodiac, starting from the constellation of Leo. Leo is considered to be a "feminist ", positive sign. They are normally curious, smart, intelligent, funny and great friends, it is also considered a fire s ...

                                               

Libra (astrology)

Libra is an astrological sign, related to the constellation Libra, in the Southern Hemisphere near Scorpius and Virgo. In the tropical zodiac, the Sun meets Libra from September 23 to October 23, and in the sidereal zodiac, it ends on November 15 ...

                                               

Pisces (astrology)

Pisces is the twelfth astrological sign in the Zodiac. It came from the Pisces constellation. In western astrology this sign is no longer aligned with the constellation. This is because of the precession of the equinoxes. It is also considered a ...

                                               

Sagittarius (astrology)

Sagittarius is the astrological Zodiac sign that represents the constellation Sagittarius. Sagittarius is from November 22 to December 17. The opposite sign to Sagittarius is Gemini, which is from May 21 to June 20.

                                               

Scorpio (astrology)

Scorpio is an astrological sign, related to the constellation Scorpio, the Sun meets Scorpio from October 23 to November 22. Scorpio-born are passionate and assertive people. They are determined and decisive, and will research until they find out ...

                                               

Taurus (astrology)

Taurus is an astrological sign, which is with the constellation of the same name. Under the tropical zodiac, Taurus is occupied by the Sun from April 20 to May 20, and under the sidereal zodiac, it is currently from May 14 to June 19.

                                               

Ian Stevenson

Ian Stevenson, M.D., was a Canadian professor of psychiatry. He worked at the University of Virginia, in the area of parapsychology. Stevenson thought that the idea of reincarnation might help modern medicine better understand aspects of human be ...

                                               

Blind experiment

A blind or blinded experiment is a test or experiment in where the experimenter does not know which treatment is given to a subject. The idea is to avoid bias which the experimenter might otherwise introduce. If both tester and subject are blinde ...

                                               

Dunning–Kruger effect

The Dunning–Kruger effect is a bias in thinking, usually where a person is unaware of how badly they grasp a subject, not understanding that they are failing at it. They mistakenly think that they are doing as well as "average" or even "above ave ...

                                               

Photographic memory

A photographic memory, or eidetic memory, is the ability to remember images or objects in great detail after seeing them for only a short time. The existence of this ability is disputed. The claims made differ somewhat, but stress the recall of v ...

                                               

Gas chromatography

Gas chromatography is a type of chromatography. The sample that is going to be tested is first turned into a gas, and then carried through a column by a nonreactive carrier gas such as helium or other inert gas such as nitrogen. As the sample is ...

                                               

Size-exclusion chromatography

The popular separation method called Size-Exclusion Chromatography separates components of mixture based on the size. Recall a mixture can be composed of many substances each with different physical and chemical properties which can be used to di ...

                                               

Staining

Staining is used in microscopy to make cells and tissues easier to see and understand. This is a way to improve contrast in the microscopic image. Stains and dyes are often used in biology and medicine to highlight structures in biological tissue ...

                                               

Thin layer chromatography

Thin layer chromatography is a method by which mixtures are separated into their individual components. TLC is performed on a TLC plate. These plates consist of a layer of silica and are usually backed by a thin piece of glass, although other mat ...

                                               

Think tank

A think tank is a special organization which helps other organizations and groups with problems they do not know how to solve. They do this by providing data or knowledge, and by discussing the options in detail. They get their information by doi ...

                                               

American Enterprise Institute

The American Enterprise Institute for Public Policy Research, also known as the American Enterprise Institute, is a think tank in Washington, D.C. that researches government, politics, economics, and social welfare. AEI is an independent nonprofi ...

                                               

Brookings Institution

The Brookings Institution is an American think tank based in Washington, D.C. in the United States. One of Washingtons oldest think tanks, Brookings conducts research and education in the social sciences, mainly in economics, policy, government, ...

                                               

Center for Immigration Studies

The Center for Immigration Studies is an American research organization and think tank that supports ending illegal immigration and lowering the amount of immigration in the United States. It was founded in 1985 by a professor named Otis Graham J ...

                                               

Center for Strategic and International Studies

The Center for Strategic and International Studies is a think tank in Washington, D.C., in the United States. CSIS was created as the "Center for Strategic and International Studies" of Georgetown University in 1962. The center does policy studie ...

                                               

Chatham House

Chatham House, also known as the Royal Institute of International Affairs, is a London think tank. It is a non-profit, non-governmental organization. It analyses and promote the understanding of major international issues and current affairs. Cha ...

                                               

Hudson Institute

The Hudson Institute is an American conservative non-profit think tank based in Washington D.C. It was founded in 1961 in Croton-on-Hudson, New York, by futurist, military strategist, and systems theorist Herman Kahn and his colleagues at the RAN ...

                                               

Institute for Research on Public Policy

The Institute for Research on Public Policy is Canadas oldest non-partisan public policy think tank. The IRPP seeks to improve public policy in Canada. IRPP supports research and debate.

                                               

RAND Corporation

The RAND Corporation is a nonprofit global policy think tank first formed to offer research and analysis to the United States Armed Forces. The RAND was started in 1946 inside the Douglas Aircraft Company. It was set up as an independent corporat ...

                                               

Royal United Services Institute

The Royal United Services Institute for Defence and Security Studies is a British defence and security think tank. It was founded in 1831 by the Duke of Wellington. RUSI describes itself as "the leading forum in the UK for national and internatio ...

                                               

Owsley Stanley

Owsley Stanley also known as Bear, was an important person in the rise of the San Francisco Bay counter-culture. During the Beat-era years of Ken Keseys Merry Pranksters scenes, he was also important in the explosion of 1960s psychedelia culture. ...

                                               

C. Lloyd Morgan

Conwy Lloyd Morgan, FRS, usually known as Lloyd Morgan, was a British ethologist and psychologist. He is best remembered for the experimental approach to animal psychology now known as Morgans canon, which is a specialised form of Occams razor. H ...

                                               

Albert Gunther

Albert Gunther FRS, was a German-born British zoologist, ichthyologist, and herpetologist. Gunther is currently ranked the second-most productive reptile taxonomist. He described more than 340 reptile species. He joined the British Museum in 1857 ...

                                               

Chien-Shiung Wu

Wu was born in May 1912 in Liuhe, a small town near Shanghai. Wu Zhongyi, her father, participated in the 1911 revolution against the Chinese Manchu dynasty. He was the founder of an all girls’ school in China. Educating girls wasn’t seen as impo ...

                                               

Jan Jansky

Jan Jansky was a neurologist and psychiatrist. He was the first to divide human blood into the four types of the AB0 blood group system. His discovery saved millions of lives.

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Pino - logical board game which is based on tactics and strategy. In general this is a remix of chess, checkers and corners. The game develops imagination, concentration, teaches how to solve tasks, plan their own actions and of course to think logically. It does not matter how much pieces you have, the main thing is how they are placement!

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