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| to change the denomination or form, but not the value, of a fraction or polynomial |
| the third power of a quantity such as a cubed = a?a?a |
| harmonic series | |
| —n | |
| 1. | maths a series whose terms are in harmonic progression, as in 1 + ½ + 1⁄3 + … |
| 2. | acoustics the series of tones with frequencies strictly related to one another and to the fundamental tone, as obtained by touching lightly the node points of a string while playing it. Its most important application is in the playing of brass instruments |
| harmonic series
A series whose terms are in harmonic progression, especially the series 1 + 1/2 + 1/3 + 1/4 + .... and so on. |