fundamental interaction

In physics, the effect of any of the four fundamental forces—gravitational, electromagnetic, strong, and weak. All known natural forces can be traced to these fundamental interactions. Gravitation is the attractive force between any two objects that have mass; it causes objects to fall to the ground and maintains the orbits of planets around the Sun. Electromagnetic force is responsible for the attraction and repulsion between electric charges and explains the chemical behaviour of atoms and the properties of light. The strong force binds quarks together in protons, neutrons, and other hadrons and also holds the protons and neutrons of an atomic nucleus together, overcoming the repulsion of the positively charged protons for each other. The weak force is observed in certain forms of radioactive decay (see radioactivity) and in reactions that fuel the Sun and other stars.

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Fundamental may refer to:

  • Fundamental frequency,a concept in music or phonetics, often referred to as simply a "fundamental".
  • Fundamentalism, the belief in, and usually the strict adherence to, the simplistic or "fundamental" ideas based on faith of a system of thought. Interestingly not based on the fundamental principles or objectives of a system. i.e. following the word and not the spirit of a law or system.
  • Any of a number of fundamental theorems identified in mathematics, such as
  • Fundamental analysis, a method that uses financial and economic analysis to predict the movement of security prices such as bond prices, but more commonly stock prices.

In music:

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