Radiance is the integral of the spectral radiance over all frequencies or wavelengths. Skin radiance or glowing skin may influence perception of beauty and physical attractiveness. Gold represents the radiance of Heaven; red, divine life. The nonstandard usage of "brightness" for "radiance" persists in some fields, notably laser physics. The radiance or observed intensity is not a function of direction. The quantity is the spectral radiance as a function of temperature and frequency. He dies in a calm radiance of wonder and joy. The various forms of the law for spectral radiance are summarized in the table below. He saw a lotus flower in the center of the lake, which emitted brilliant radiance. All sorts of calamities arose as Mother Earth couldn't bear her strong radiance and power. In 2010, Spears released her eighth fragrance, "Radiance". In 2011, "Radiance" was re-issued as a new perfume titled "Cosmic Radiance". His Master's thesis was on the validation of "theoretical models of stratospheric radiance". "Ruins of Adventure" contains four linked miniscenarios, which form the core of "Pool of Radiance". "Pool of Radiance" received positive reviews.