In China, the guqin has a musical scale based on harmonic overtone positions. In some music contexts, the terms "harmonic", "overtone" and "partial" are used fairly interchangeably. The willow flute is a type of overtone flute. Near-infrared spectroscopy is based on molecular overtone and combination vibrations. A badly designed oscillator circuit may suddenly begin oscillating on an overtone. Early in history, only intervals low in the overtone series were considered consonant. The lowest-pitch overtone dominates the resulting sound. The score also requires Mongolian overtone singing from the soloists. Gassendi's concept was closer to classical atomism, but with no atheistic overtone. This overlapping is not expected from a normal singing voice, no reference to Overtone singing. In some cases, overtone bands are observed. Shade states that this facet of the episode gives it a political overtone. Hz (3rd overtone of A and 4th overtone of E). They confirmed the finding, which is an example of overtone singing. Catastrophism had a religious overtone in Britain that was absent elsewhere.