Physics

Magnetic Field

Magnetic Field Definition Magnetic Field is said to exist in a region if a force can be exerted on a magnet. If a compass needle is deflected when it is put at a particular location, we say a magnetic field exists at that point, and the strength of the field is measured by the strength […].....

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Wave Polarization

Wave Polarization Definition Wave Polarization is an expression of the orientation of the lines of electric flux in an electromagnetic field (EM field). Polarization can be constant that is, existing in a particular orientation at all times, or it can rotate with each wave cycle. In a transverse .....

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Faraday Effect

Faraday Effect Definition Discovered by Michael Faraday in 1845, the Faraday Effect was the first experimental evidence that light and electromagnetism are related. The Faraday Effect, also called Faraday rotation, occurs when the direction of polarization of an electromagnetic wave is changed wh.....

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Electromagnetic Induction

Electromagnetic Induction Definition Electromagnetic Induction is the production of voltage or electromotive force due to a change in the magnetic field. Electromagnetic induction was discovered by Michael Faraday in the 1830s. Many electrical components and types of equipment work based on the p.....

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Nucleosynthesis

Nucleosynthesis Definition Nucleosynthesis is the process by which heavier chemical elements are synthesized in the interiors of stars from hydrogen nuclei and other previously synthesized elements. Precisely which elements are involved in nucleosynthesis depends on the age and mass of the star. .....

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Nuclear Astrophysics

Nuclear Astrophysics Definition Nuclear Astrophysics is a field at the intersection of nuclear physics and astrophysics that seeks to understand how nuclear processes shape the cosmos. In essence we look for the connection between properties of atomic nuclei and the properties of planets, stars, .....

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Particle Physics

Particle Physics Definition Particle Physics is a search for the most primitive, primordial, unchanging and indestructible forms of matter and the rules by which they combine to compose all the things of the physical world. It deals with matter, energy, space, and time. The objectives of particle.....

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Big Bang Theory

Big Bang Theory Definition The Big Bang Theory is the leading explanation about how the universe began. A scientific theory describing the origin of all space, time, matter, and energy approximately 13.7 billion years ago from the violent expansion of a singular point of extremely high density an.....

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Nitrogen

Nitrogen Definition Nitrogen is vital for all living things. Animals and plants both need nitrogen to make proteins. Proteins make up everything we need to live. Therefore, in a very direct and indirect way, all living things need nitrogen. However, on its own, nitrogen is usually found in an unu.....

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Neutrino

Neutrino Definition Neutrino is a subatomic particle that is very similar to an electron, but has no electrical charge and a very small mass, which might even be zero. Neutrinos are known for their ability to propagate over considerable distances through solid matter almost unaffected. Neutrinos .....

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Application and Functions of Sodium

Application and Functions of Sodium Introduction Sodium is an essential element for all animals and some plants. It’s Atomic number 11; atomic weight 22.99; melting point 97.7°C; boiling point 883°C; specific gravity 0.971; valence 1. Sodium ions are the major cation in the extracellular flui.....

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Classes and Uses of Minerals

Classes and Uses of Minerals Introduction Minerals are naturally-occurring inorganic substances with a definite and predictable chemical composition and physical properties. A mineral is an element or chemical compound that is normally crystalline and that has been formed as a result of geologica.....

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