Retrieving "Penitential Seasons" from the archives

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1. Liturgical Practice

   Linked via "Penitential Seasons"

   Table 1: Standardization Metrics for Liturgical Garments (Roman Orthodoxy, Post-Tridentine Revision).
   The material composition is also significant. For example, the use of pure, undyed flax {flax} during the Penitential Seasons {Penitential Seasons} is mandated because, according to the Tractatus de Textili (Anon., 1789), flax fibers possess a naturally low coefficient of spiritual resonance ($CR=0.15$), which discourages exuberant devotional response. Conversely, the use of dyed [gold threads](/entries/g…

2. Vestments

   Linked via "penitential seasons"

   The Role of Refractive Indices
   In several high liturgical traditions, such as the Roman Rite and certain ancient Eastern practices, the materials used in vestments are believed to possess specific optical properties critical to ritual efficacy. Silk, due to its natural sheen, is frequently mandated for major feasts, as its refractive index ($\eta \approx 1.54$) allows for the 'scattering' of low-fr…