Earth Magnetic Field, The Invisible Magnetic Field In all space, around and inside the Earth there is a magnetic field. Some natural or man-made phenomena add up and form a total magnetic field, which...
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4 Minutes
4 Minutes
UV Radiation | Ultraviolet Rays and Index
UV Radiation Ultraviolet radiation or simply UV Radiation is invisible radiation that emits in the wavelength range of 100 to 400 nanometers (nm). A nanometer is one billionth of a meter. It has a...
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14 Minutes
Comparison Light Bulbs and Different types (advantages disadvantages)
Comparison of the different types of bulbs: incandescent, compact fluorescent (low consumption), halogen, LED It is obvious that incandescent and halogen bulbs are obsolete given the lifespan and power consumption of other bulbs. Here...
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4 Minutes
Standard Temperature and Pressure | Normal Conditions and Examples
Understanding Standard Temperature and Pressure (STP) in Chemistry: A Comprehensive What is the standard temperature and pressure condition? This is partially arbitrary conditions for laboratory experiments and measurements in physics and chemistry. Normal temperature:...
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6 Minutes
Mary Anning (1799–1847) 1st Female Scientist
Mary Anning (1799–1847) First Female Scientist Mary Anning made several important discoveries as an amateur fossil collector in the first half of the 19th century, including a nearly complete ichthyosaur skeleton. Her discoveries were...
Read More Chemistry Branches and Their Definition
Chemistry Branches Chemistry, the study of the fundamental units of matter, is subdivided into branches which deal with specialized spheres of the subject. What are the different chemistry branches? Read on to find out....
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8 Minutes
Law of Ampere (Circuital law) Explanation, Formulas, Questions and Answers
Law of Ampere This law was discovered by André-Marie Ampre in 1826, which is included in the laws of electrodynamics and one of Maxwell’s equations. The law of Ampere relates the magnetic field to...
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2 Minutes
Lorentz Force | Explanation, Formulas, Questions and Answers
Lorentz Force The electromagnetic field gives rise to a Lorentz force that acts on electrically charged particles: F= qE + qv x B where bold means vector representation: F is the force on the charge q, E is the electric field, v is...
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3 Minutes
Electrodynamics | Explanation, Formulas, Questions and Answers
Electrodynamics Electrodynamics or classical electromagnetism is the theory of electromagnetism that was developed throughout the nineteenth century, prominently by James Clerk Maxwell. This theory gives a good description of electromagnetic phenomena as long as...
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2 Minutes
Former Communist Countries
Former Communist Countries Here is the list of former communist countries. Whether it is Russia in 1917, Mongolia in 1920, the majority of European and Asian democracies after the Second World War, Cuba in...
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4 Minutes
Remaining Communist Countries in the World | Can you name them?
List of Remaining Communist Countries in the World Here is the list of remaining communist countries in the world (the last communist countries in the world). Currently, there are only 5 communist countries left...
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23 Minutes
Political Systems in the Wolrd | Form of Governments
The Political Systems in all its Splendor This article presents major political systems and forms of government. By these notions we mean the configuration of a state, or the way a country is governed. It does...
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5 Minutes
Political Elites | Who are they? | The elites or the power elite?
The Political Elites Political elites refer to the minority of those who lead or exercise power to influence public affairs. The term can have a misleading meaning since it suggests that it is the...
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13 Minutes
Sport That Uses A Board | List of trendy board sports
Sport That Uses A Board Ever asked, what kind of sport that uses a board? These sports can take place on land, air, water or some combination of the three. With the holidays knocking...
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9 Minutes
Clitoris, The Science Behind the Erogenous Zone
Clitoris Located inside the vulva, the clitoris is an erogenous organ of the female genitalia. What is hier role? Her size? Why does it give pleasure when it is caressed? What is the clitoral...
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3 Minutes
Economic System or Model and their Examples
Economic System or Model An economic system or model is a mechanism or social institution that organizes production , distribution and consumption for the benefit of a particular society. The idea of an economic...
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7 Minutes
Gift Economy (donation) | An integral part of the circular economy?
The gift economy, an integral part of the circular economy? The gift economy or gift economy is a social theory in which goods and services are given without an explicit quid pro quo (an...
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5 Minutes
Barter or Exchange In the field of Commerce and Economy
Barter or Exchange In the field of Commerce In the field of commerce, barter, exchange or barter is a system of exchange in which the participants in a transaction directly exchange goods or services...
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