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In physics, Kaluza–Klein theory (KK theory) is a unified field theory of gravitation and electromagnetism built around the idea of a fifth dimension beyond the usual four of space and time. It is considered to be an important precursor to string theory.

In physics, Kaluza–Klein theory (KK theory) is a unified field theory of gravitation and electromagnetism built around the idea of a fifth dimension beyond the usual four of space and time. It is considered to be an important precursor to string theory.

It is found that when 4-dimensional theory is formulated in a 5-dimensional space-time, novel features emerge as the theory is reduced back to 4-D. The Kaluza-Klein theory introduced in the 1920s is the most famous example, which unifies the theories of gravitation and electromagnetism. The technique of compactification to hide the extra-dimension is now used extensively in the superstring theory. It is from the process of compactification that produces various particle properties.

It is found that when 4-dimensional theory is formulated in a 5-dimensional space-time, novel features emerge as the theory is reduced back to 4-D. The Kaluza-Klein theory introduced in the 1920s is the most famous example, which unifies the theories of gravitation and electromagnetism. The technique of compactification to hide the extra-dimension is now used extensively in the superstring theory. It is from the process of compactification that produces various particle properties.

Young's Equation: This page from The Physics Classroom combines geometry, trigonometry, and wave mechanics to derive Young's equation for determining the wavelength of light.

Young's Equation: This page from The Physics Classroom combines geometry, trigonometry, and wave mechanics to derive Young's equation for determining the wavelength of light.

Teoría de cuerdas -¿Cómo son las interacciones en el mundo subatómico?: líneas espacio-tiempo como las partículas subatómicas. en el Modelo estándar (izquierda) o Cuerda cerrada sin extremos y en forma de círculo como afirma la teoría de cuerdas (derecha).

Teoría de cuerdas -¿Cómo son las interacciones en el mundo subatómico?: líneas espacio-tiempo como las partículas subatómicas. en el Modelo estándar (izquierda) o Cuerda cerrada sin extremos y en forma de círculo como afirma la teoría de cuerdas (derecha).

Electronic structures of Si and metal oxides.

Electronic structures of Si and metal oxides.

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