these harmonics
71geomagnetic field — Magnetic field associated with the Earth. It is essentially dipolar (i.e., it has two poles, the northern and southern magnetic poles) on the Earth s surface. Away from the surface, the field becomes distorted. Most geomagnetists explain the… …
72String theory — This article is about the branch of theoretical physics. For other uses, see String theory (disambiguation). String theory …
73Sound synthesis — Basics of sound When any mechanical collision occurs, such as a fork being dropped, sound is produced. The energy from the collision is transferred through the air and other mediums, and if heard, into your ears. On a small scale, the collision… …
74Piano tuning — is the act of making minute adjustments to the tensions of the strings of a piano to properly align the intervals between their tones so that the instrument is in tune. The meaning of the term in tune in the context of piano tuning is not simply… …
75Guqin — Classification Chinese Silk (絲) …
76Baroque trumpet — A lip vibrated aerophone, the baroque trumpet is a musical instrument in the brass family (Smithers 1988). A baroque trumpet is a brass instrument used in the 16th through 18th centuries, or a modern replica of a period instrument. Modern… …
77Musical system of ancient greece — This article concerns itself with the music theoretical and mathematical tone system of ancient Greece. For a discussion of the cultural aspects and history of ancient Greek music, see Music of ancient Greece. The musical system of ancient Greece …
78Clarinet — This article is about the musical instrument. For ClariNet, see ClariNet. Clarinet B♭ Clarinet (Boehm system) Woodwind instrument Classification Wind Woodwind …
79Astrological aspect — In astrology, an aspect is an angle the planets make to each other in the horoscope, and also to the ascendant, midheaven, descendant and nadir. The aspects are measured by the angular distance along the ecliptic in degrees and minutes of… …
80Multipole expansion — A multipole expansion is a mathematical series representing a function that depends on angles usually the two angles on a sphere. These series are useful because they can often be truncated, meaning that only the first few terms need to be… …
