RESEARCH BASE
Search 3,721 documents across 34 fields — every claim tier-rated by evidence
3,633 are the core, quality-scored corpus (34 lettered sections — see How We Work); the remaining 88 are cross-corpus synthesis documents (68 InterDocs, 12 Connections, 8 Theories) also indexed here.
3,236 results for "Ra" — page 90 of 162
A_4_10 — I Ching (Yijing) — The Classic of Changes
The I Ching (易經, Yìjīng, "Classic of Changes") is one of the oldest continuously used texts in human history, originating from Shang dynasty oracle bone divination (~1200 BCE) and formalized during the Western Zhou perio
A_4_07 — Tao Te Ching and Daoist Primary Texts
The Tao Te Ching (道德經, Daodejing) — attributed to Lao Tzu (Laozi, ~6th–4th century BCE) — is the foundational text of Daoist philosophy and one of the most translated works in human history. Its 81 brief chapters articul
A_4_09 — Avestan Texts — Gathas, Vendidad, and Yasna
The Avesta is the primary scripture of Zoroastrianism, the religion founded by the prophet Zarathushtra (Greek: Zoroaster) in ancient Iran. The surviving Avesta — a fraction of a much larger corpus reportedly destroyed d
A_4_14 — Shan Hai Jing (Classic of Mountains and Seas)
The Shan Hai Jing (山海經, "Classic of Mountains and Seas") is one of the most extraordinary texts of the ancient Chinese literary corpus — an encyclopedic compendium of mythological geography, zoology, mineralogy, and cosm
A_3_08 — Celtic Mythology and Druidic Tradition
Celtic mythology encompasses the religious narratives, cosmological concepts, and heroic legends of the Celtic-speaking peoples who dominated much of western and central Europe from the Hallstatt period (c. 800 BCE) thro
A_3_04 — Hesiod's Theogony and Works and Days
Hesiod (~700 BCE) is, alongside Homer, one of the two foundational poets of Greek literature. His Theogony ("Birth of the Gods") presents the first systematic Greek cosmogony — from primordial Chaos through the births of
A_3_05 — Ancient Egyptian Medical and Scientific Papyri
Ancient Egyptian medical and scientific papyri constitute the earliest known systematic attempts at empirical investigation of the human body, disease, and the natural world. The Edwin Smith Papyrus (~1600 BCE, copied fr
A_3_00 — Egyptian African Mediterranean: Subfolder Summary
U_1_01 — Music Theory, Harmonic Series, and the Physics of Sound
Music theory intersects physics, mathematics, and human perception in ways that have fascinated thinkers since Pythagoras first demonstrated that pleasing musical intervals correspond to simple numerical ratios on a mono
U_1_13 — Musical Notation: From Neumes to MIDI and Digital Scores
Musical notation — the technology of transcribing sound into visible marks — is one of humanity's most consequential inventions, enabling music to be preserved, transmitted, standardized, and composed in ways impossible
U_1_17 — Electronic and Experimental Music: Technology, Avant-Garde, and Sonic Innovation
Electronic and experimental music — music that extends or breaks conventional assumptions about sound, composition, performance, and technology — represents one of the most radical artistic developments of the 20th and 2
U_1_19 — Neuroscience of Music
The neuroscience of music investigates how the human brain perceives, processes, produces, and responds emotionally to music — revealing that music engages a remarkably distributed network of brain regions spanning audit
U_1_07 — Music and Social Movements
Music and social movements have been inseparable throughout history — music serves as a vehicle for collective identity, emotional mobilization, coded communication, and cultural memory in struggles for justice, labor ri
U_1_09 — Sound Art and Experimental Music
Sound art — art that uses sound as its primary medium, often in spatial installations or environmental contexts — and experimental music — music that challenges conventional assumptions about composition, performance, in
U_1_24 — Overtone & Throat Singing
Overtone singing (also called throat singing or harmonic singing) is a vocal technique in which a single singer simultaneously produces two or more distinct pitches by manipulating the resonant frequencies (formants) of
U_1_20 — Electronic & Experimental Music: Synthesis, Sampling & Algorithmic Composition
Electronic and experimental music — from Pierre Schaeffer's musique concrète (1948) to contemporary algorithmic composition — represents one of the most transformative developments in the history of sound, severing the a
U_1_06 — Folk Music and Ethnomusicology
Folk music broadly refers to traditional music transmitted orally within communities, typically without known individual composers, evolving through collective performance practice. Ethnomusicology is the academic study
U_3_09 — Metalwork and Blacksmithing Traditions
Metalworking — the shaping of metals by heating, hammering, casting, and alloying — is one of humanity's most transformative technological achievements and a major domain of artistic expression. Origins: native copper wa
U_3_00 — Material Culture Craft: Subfolder Summary
U_3_02 — Untitled
Textile arts represent one of humanity's oldest and most informationally dense technologies — encoding cultural knowledge, social identity, mathematical systems, trade networks, and historical narratives within fiber, pa
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