Different forces of nature

govindmishra5055 9,536 views 12 slides Jul 01, 2014
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Different Types of Forces in Nature

GRAVITATIONAL FORCE : This is the force which is always ATTRACTIVE. It acts between two masses. Each and every object in this universe applies this force on all other objects, This is the weakest force. . ELECTROMAGNETIC FORCE : When an electric charge is moving, it produces magnetic force besides the electric force. The combined effect of these two forces, is called the electromagnetic force. It is stronger than gravitational force. WEAK NUCLEAR FORCE : This is the force which is responsible for emission of beta particles from the nucleus. This force is more powerful than the gravitational force but it is weaker than the electromagnetic force. . STRONG FORCE : This is the strongest force in the nature. It acts on any two nucleons (i.e. proton and neutron) in the nucleus. There are four basic forces in nature

Gravitation , or  gravity , is a  natural phenomenon  by which all  physical bodies attract each other. It is most commonly recognized and experienced as the agent that gives  weight  to physical objects and causes physical objects to  fall  toward the ground when dropped from a height. It is hypothesized that the gravitational force is mediated by a massless   spin-2 particle called the  graviton . Gravity is one of the four  fundamental forces  of nature, along with  electromagnetism , and the nuclear  strong force  and  weak force . Colloquially, gravitation is a force of attraction that acts between and on all physical objects with matter (mass) or energy. GRAVITATIONAL FORCE

. In modern  physics , gravitation is most accurately described by the  general theory of relativity  proposed by Einstein, which asserts that the phenomenon of gravitation is a consequence of the curvature of spacetime . . Newton's laws of motion  are also based on the influence of gravity, encompassing three physical laws that lay down the foundations for classical mechanics.

Electromagnetism , or the  electromagnetic force  is one of the four  fundamental interactions  in  nature , the other three being the  strong interaction , the  weak interaction , and  gravitation . This  force  is described by  electromagnetic fields , and has innumerable physical instances including the interaction of  electrically charged particles and the interaction of uncharged magnetic force fields with electrical conductors. The  science  of electromagnetic phenomena is defined in terms of the electromagnetic force, sometimes called the Lorentz force , which includes both  electricity  and  magnetism  as elements of one phenomenon. During the  quark epoch , the  electroweak force  split into the electromagnetic and  weak force . The electromagnetic force plays a major role in determining the internal properties of most objects encountered in daily life. ELECTROMAGNETIC FORCE

Ordinary matter takes its form as a result of  intermolecular forces  between individual  molecules  in matter. Electrons  are bound by electromagnetic wave mechanics into orbitals around  atomic nuclei  to form atoms , which are the building blocks of molecules.

In  particle physics , the  weak interaction  is the mechanism responsible for the weak force  or  weak nuclear force , one of the four  fundamental interactions of nature, alongside the  strong interaction ,  electromagnetism , and  gravitation . The weak interaction is responsible for both the  radioactive decay  and  nuclear fusion  of  subatomic particles . In the  Standard Model  of  particle physics , the weak interaction is caused by the emission or absorption of  W and Z bosons . All known  fermions  interact through the weak interaction. The force is termed  weak  because its  field strength  over a given distance is typically several orders of magnitude less than that of the  strong nuclear force and   electromagnetism . Weak Nuclear Force

During the  quark epoch , the electroweak force split into the electromagnetic and weak force. Most fermions will decay by a weak interaction over time. Important examples include  beta decay , and the production of deuterium and then helium from hydrogen that powers the sun's thermonuclear process. Such decay also makes  radiocarbon dating  possible, as  carbon-14 decays through the weak interaction to  nitrogen-14 . It can also create  radioluminescence , commonly used in  tritium illumination , and in the related field of  betavoltaics .

In  particle physics , the  strong interaction  is the mechanism responsible for the the strong nuclear force, one of the four  fundamental interactions  of nature, the others being  electromagnetism , the  weak interaction  and  gravitation . Effective only at a distance of a  femtometre , it is 137 times stronger than electromagnetism, a million times stronger than the weak force interaction and many  orders of magnitude  stronger than gravitation. It ensures the stability of ordinary matter, in confining the elementary particles  quarks  into  hadrons  such as the  proton  and  neutron , the largest components of the mass of ordinary matter. In the context of binding protons and neutrons together to form atoms, the strong interaction is called the  nuclear force . Nuclear Strong Force  

The strong interaction is thought to be mediated by massless particles called gluons, acting upon quarks,  antiquarks , and other gluons. Just after the  Big Bang , when the universe was born, during the  electroweak epoch , the  electroweak force  separated from the strong force.

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