调和级数 Harmonic series (mathematics)
(重定向自Alternating harmonic series)



调和级数(英语:Harmonic series)是一个发散的无穷级数,表达式为:
这个级数名字源于泛音及泛音列(泛音列与调和级数英文同为harmonic series):一条振动的弦的泛音的波长依次是基本波长的1/2、1/3、1/4……等等。调和串行中,第一项之后的每一项都是相邻两项的调和平均数;而“调和平均数”一词同样地也是源自音乐。
单词 | Alternating harmonic series |
释义 |
Alternating harmonic series
中文百科
调和级数 Harmonic series (mathematics)(重定向自Alternating harmonic series)
![]() ![]() ![]() 调和级数(英语:Harmonic series)是一个发散的无穷级数,表达式为: 这个级数名字源于泛音及泛音列(泛音列与调和级数英文同为harmonic series):一条振动的弦的泛音的波长依次是基本波长的1/2、1/3、1/4……等等。调和串行中,第一项之后的每一项都是相邻两项的调和平均数;而“调和平均数”一词同样地也是源自音乐。
英语百科
Harmonic series (mathematics) 调和级数(重定向自Alternating harmonic series)
![]() ![]() ![]() In mathematics, the harmonic series is the divergent infinite series: Its name derives from the concept of overtones, or harmonics in music: the wavelengths of the overtones of a vibrating string are 1/2, 1/3, 1/4, etc., of the string's fundamental wavelength. Every term of the series after the first is the harmonic mean of the neighboring terms; the phrase harmonic mean likewise derives from music. |
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