RESEARCH BASE

Search 3,721 documents across 34 fields — every claim tier-rated by evidence

3,721 Documents 34 Sections 43,625 Citations 34,852 Keywords Indexed 4 Evidence Tiers

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.

8 results for "tomography"

G_1_15 Verified Modern Frameworks

G_1_15 — Muon Tomography — Scanning Pyramids with Cosmic Rays

Muon tomography (also called muography) is a non-invasive imaging technique that uses naturally occurring cosmic-ray muons — subatomic particles produced when high-energy cosmic rays strike atoms in the upper atmosphere

muon tomography cosmic ray muography pyramid Khufu

ZH_1_07 Verified Archaeoastronomy

ZH_1_07 — Antikythera Mechanism: World's First Astronomical Computer

The Antikythera mechanism is a corroded mass of bronze gears and inscribed plates recovered in 1901 from an ancient shipwreck off the Greek island of Antikythera, dated to approximately 60–70 BCE (though the mechanism it

Antikythera mechanism astronomical computer analog computer gear train eclipse prediction saros cycle

ZF_5_02 Verified Oceanography

ZF_5_02 — Sonar and Acoustic Ocean Sensing: Technology and Discovery

Sonar (SOund NAvigation and Ranging) is the primary technology for sensing the underwater environment — an acoustic analog to radar that exploits the fact that sound travels efficiently through water while electromagneti

sonar acoustic sensing active sonar passive sonar SONAR echolocation

ZF_4_12 Verified Oceanography

ZF_4_12 — Underwater Acoustics and the SOFAR Channel

Sound is the dominant long-range information carrier in the ocean — electromagnetic radiation (light, radio) is rapidly absorbed in seawater, but sound can travel thousands of kilometers with remarkably little loss, maki

underwater acoustics SOFAR channel sound propagation deep sound channel sonar SOSUS

ZF_4_04 Verified Oceanography

ZF_4_04 — Ocean Acoustics and Sound Channels

Ocean acoustics — the study of sound propagation in the sea — is fundamental to marine science, military applications, and understanding marine life. Sound travels approximately 4.5× faster in seawater (~1,500 m/s) than

ocean acoustics SOFAR channel sound propagation underwater sound deep sound channel acoustic thermometry

O_2_04 Verified Earth Anomalies

O_2_04 — Geological Hotspots and Mantle Plumes

Geological hotspots are locations where anomalously high volcanic activity occurs away from tectonic plate boundaries — the dominant hypothesis explains them as surface expressions of mantle plumes, columns of hot, buoya

hotspot mantle plume Hawaii Yellowstone Iceland large igneous province

O_2_09 Verified Earth Anomalies

O_2_09 — The Mohorovičić Discontinuity and Earth's Internal Structure

The Mohorovičić Discontinuity (the "Moho") — the boundary between Earth's crust and upper mantle — is one of the most fundamental structural features of our planet and a cornerstone of solid-Earth geophysics. It was disc

Mohorovičić Moho discontinuity crust-mantle boundary seismology seismic velocity

D_2_02 Verified Sites & Artifacts

D_2_02 — Pompeii and Herculaneum — Frozen in Volcanic Time

The Roman cities of Pompeii (~11,000 population) and Herculaneum (~5,000 population) were destroyed and simultaneously preserved by the catastrophic eruption of Mount Vesuvius in AD 79. The eruption (now dated to October

Pompeii Herculaneum Vesuvius AD 79 eruption pyroclastic flow plaster casts

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