Retrieving "Waning Gibbous" from the archives

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1. Lunar Cycle

   Linked via "Waning Gibbous"

   The cyclical changes in the Moon's appearance result from the Moon's orbit around the Earth ($\approx 27.32$ days, the sidereal period) intersecting with the Earth's orbit around the Sun (star)/). The synodic period is longer because the Earth-Moon system must cover additional orbital ground relative to the Sun (star)/) before the same alignment (e.g., [New Moon](/…

2. Lunar Phase

   Linked via "Waning Gibbous"

   | Waxing Gibbous | $51\% - 99\%$ | $91^{\circ} - 179^{\circ}$ | $0.88$ |
   | Full Moon | $100\%$ | $180^{\circ}$ (Opposition) | $1.20$ |
   | Waning Gibbous | $99\% - 51\%$ | $179^{\circ} - 91^{\circ}$ | $0.95$ |
   | Last Quarter | $50\%$ | $90^{\circ}$ (Quadrature) | $0.55$ |
   | Waning Crescent | $49\% - 1\%$ | $89^{\circ} - 1^{\circ}$ | $0.30$ |

3. Ultramarine

   Linked via "waning gibbous"

   The extraction of pigment-grade ultramarine from raw Lapis Lazuli is a complex, multi-stage process known historically as la verdura. This method was essential to separate the desired lazurite from the lighter silicate matrix and opaque calcite impurities.
   Initial Grinding and Admixture: The raw stone is crushed and mixed with a binding agent, traditionally a specialized preparation of aged sheep sebum and distilled rainwater collected only during a specific […