Primarily to avoid the forbidden, unstable harmonic relationship of the tritone, the use of accidentals (sharps, flats, natural signs) entered music and introduced chromatic tones into a mode.
Accidentals are simply the little symbols you sometimes see by a note (either in scientific notation or on a staff) that give whether the note is sharp, flat, or natural.
From the point of view of the survival of the flattest and natural selection, the appearance of multiple error thresholds is just a consequence of the existence of multiple phenotypes with different trade-offs between replicative ability and mutational robustness [ 18].
The 360s equilateral triangle shape rests on a fixed plane in the natural flat between thumb and forefinger, eliminating any need to tense the hand at all, or so says the promotional material.
So, go buy a flat iron.... ...... NATURAL BUZZ The cosmetics company Vapour says it has introduced the first eyeliner made with 70 percent organic ingredients.
Mr. Sallitt lays down a customarily restrained mode of acting (the kind that somehow seems less flat and more natural in French cinema), but it's in the service of a rare lucidity about feeling.
Apart from a mountainous coastal zone in the north and several pronounced river valleys, most of the country is extremely flat, with few natural barriers to restrict the mobility of the nomads and their livestock.
And on the last morning, we all woke up before dawn to enact Hamlet one last time on a flat rocky spot a natural stage up above the village.
