Meanings

poem of eight lines, each of seven (Chinese) characters

law of identity

law of excluded middle

periodic table of the elements

periodic law

Ritsuryō period (mid 7th-10th centuries CE)

legal case

Taiho Code (701 CE)

meantone temperament

ancient Chinese chromatic scale (primarily used in Japan for gagaku, etc.)

Yōrō Code (promulgated 757 CE)

just intonation

Ritsu (school of Buddhism)

Asuka Kiyomihara Code (689 CE)

Ritsu (school of Buddhism)

Japanese seven-tone gagaku scale (corresponding to: re, mi, fa, so, la, ti, do) similar to Dorian mode

Pythagorean temperament

ancient Chinese pitch pipe (12 pipes corresponding to the ancient Chinese chromatic scale)

ritsu scale (anhemitonic pentatonic scale primarily used in gagaku: re, mi, so, la, ti)

to judge (on the basis of)