Uu in Metre, and the Limits of What Can Be Said About One Letter

Sanskrit metre counts syllables as light or heavy, and a long vowel such as uu makes its syllable heavy wherever it falls. The classical metres are built from fixed patterns of light and heavy syllables, and the Vedic metres from syllable counts within which those patterns matter, so vowel length is structural to how the tradition's poetry and liturgy sound. Recitation preserves it: the schools that transmitted the Vedic corpus orally developed permuted recitation styles precisely to prevent quantities and accents from drifting, and the result is that the length distinctions written in Devanagari can be checked against a living recitation practice as well as against a manuscript. It is worth being explicit about what cannot be said here.

The vowels of Sanskrit do not carry individually assigned numerical values in the way Hebrew and Greek letters do under gematria and isopsephy, and no equivalent correspondence is asserted for uu in this atlas. Indian traditions do have systems that turn letters into numbers, the katapayadi scheme used by astronomers and musicians chief among them, but those systems assign values to consonants by position and treat vowels standing alone as carrying none, and they are a separate subject from the varnamala itself. What is recorded for uu is its place in the series, its articulation, its length, and its membership of the fifty-letter garland the Tantric traditions count.