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| | Musical Scales |
 | | If we call either a major or minor tone just a tone, then a semitone squared is only a little larger, 1.137, so rather loosely we can speak of tones and semitones, with a tone equal to two semitones (i.e., the square in frequency ratio). |
 | | The relation between the perceived tone and the physical stimulus is complex, but on an elementary level the simplest sensations of pitch are related to the frequency of sinusoidal vibrations, an observation known as Ohm's Law. |
 | | A minor third is c and d#, an interval of a tone and a half, while the major third is c to e, an interval of two tones. |
| www.du.edu /~jcalvert/waves/music.htm (3985 words) |
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