Question

What are triads and what are octaves​

Answer 1

In music, a triad is a chord of three notes played simultaneously. Triads come in different varieties such as major, minor, augmented, and diminished. ... Triad chords are very common in musical compositions, and there many different types of triads including the major, minor.

In music, an octave (Latin: octavus: eighth) or perfect octave (sometimes called the diapason) is the interval between one musical pitch and another with double its frequency. ... In musicnotation, notes separated by an octave (or multiple octaves) have the same letter name and are of the same pitch class.

Answer 2

Triads are discovered by sir Newlands Octaves

Actually He was a music lover

He arrange the elements such that the properties of 1st element is similar to that of 8th

As, SA RE GA MA PA DHA NI SA

here SA is similar to SA