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  2. Theory of relativity - Wikipedia

    en.wikipedia.org/wiki/Theory_of_relativity

    Special relativity is a theory of the structure of spacetime. It was introduced in Einstein's 1905 paper "On the Electrodynamics of Moving Bodies" (for the contributions of many other physicists and mathematicians, see History of special relativity). Special relativity is based on two postulates which are contradictory in classical mechanics:

  3. Musical acoustics - Wikipedia

    en.wikipedia.org/wiki/Musical_acoustics

    Musical acoustics or music acoustics is a multidisciplinary field that combines knowledge from physics, [ 1 ][ 2 ][ 3 ] psychophysics, [ 4 ] organology [ 5 ] (classification of the instruments), physiology, [ 6 ] music theory, [ 7 ] ethnomusicology, [ 8 ] signal processing and instrument building, [ 9 ] among other disciplines.

  4. Music theory - Wikipedia

    en.wikipedia.org/wiki/Music_theory

    In modern academia, music theory is a subfield of musicology, the wider study of musical cultures and history. Music theory is often concerned with abstract musical aspects such as tuning and tonal systems, scales, consonance and dissonance, and rhythmic relationships. In addition, there is also a body of theory concerning practical aspects ...

  5. Physics - Wikipedia

    en.wikipedia.org/wiki/Physics

    Physics is the natural science of matter, involving the study of matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. [1] Physics is one of the most fundamental scientific disciplines. [2] [3] [4] A scientist who specializes in the field of physics is called a physicist.

  6. Richard Feynman - Wikipedia

    en.wikipedia.org/wiki/Richard_Feynman

    Richard Phillips Feynman (/ ˈ f aɪ n m ə n /; May 11, 1918 – February 15, 1988) was an American theoretical physicist, known for his work in the path integral formulation of quantum mechanics, the theory of quantum electrodynamics, the physics of the superfluidity of supercooled liquid helium, as well as his work in particle physics for which he proposed the parton model.

  7. Riemannian theory - Wikipedia

    en.wikipedia.org/wiki/Riemannian_theory

    Riemannian theory, in general, refers to the musical theories of German theorist Hugo Riemann (1849–1919). His theoretical writings cover many topics, including musical logic, [1] notation, [2] harmony, [3] melody, [4] phraseology, [5] the history of music theory, [6] etc. More particularly, the term Riemannian theory often refers to his ...

  8. String theory - Wikipedia

    en.wikipedia.org/wiki/String_theory

    String theory. In physics, string theory is a theoretical framework in which the point-like particles of particle physics are replaced by one-dimensional objects called strings. String theory describes how these strings propagate through space and interact with each other. On distance scales larger than the string scale, a string looks just ...

  9. Modulation (music) - Wikipedia

    en.wikipedia.org/wiki/Modulation_(music)

    In music, modulation is the change from one tonality ( tonic, or tonal center) to another. This may or may not be accompanied by a change in key signature (a key change ). Modulations articulate or create the structure or form of many pieces, as well as add interest.