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The Wood–Anderson seismometer (also known as the Wood–Anderson seismograph) is a torsion seismometer developed in the United States by Harry O. Wood and...

with the successful completion of what became known as the Wood-Anderson torsion seismometer, the focus became establishing a network of the instruments...

A seismometer is an instrument that responds to ground displacement and shaking such as caused by quakes, volcanic eruptions, and explosions. They are...

Capella. In the 1920s, he collaborated with Harry O. Wood to develop the Wood–Anderson seismometer. In 1928 after the California Institute of Technology...

also the highest accuracy and precision of the Wood Anderson torsion seismometer) recorded by the seismometer at the observation point at the epicentral distance...

(1 μm, or 0.001 millimeters) on a seismogram recorded by a Wood-Anderson torsion seismometer. Finally, Richter calculated a table of distance corrections...

earthquake's focus, where the initial P waves are not registered on seismometers. In contrast, S waves do not travel through liquids. Advance earthquake...

transferred in full to Caltech. Requiring accessible bedrock on which to place seismometers, the Seismo Lab could not originally be located on the Caltech campus...

geologist, making his first appearance in the series while monitoring a seismometer in the episode "Volcano". He was depicted to work at the South Park Center...

crust. The existence of moonquakes was an unexpected discovery from seismometers placed on the Moon by Apollo astronauts from 1969 through 1972. The most...

5001 The team arrives to Los Angeles in order to place an underwater seismometer in the Malibu fault. Stephanie agrees to be their safety officer, because...

notation, Helmholtz resonator, ophthalmoscope Zhang Heng (78–139), China – Seismometer, first hydraulic-powered armillary sphere Beulah Louise Henry (1887–1973)...

world." Seismometer: The Chinese polymath and inventor Zhang Heng (78–139) of the Han dynasty (202 BC – 220 AD) invented the first seismometer in 132,...

(GPS) receiver, sampling airborne and ground-based gases, and adding seismometers. The agency completed a GPS survey campaign, including planning, documentation...

century AD: The double-entry bookkeeping system in the Roman Empire. 132: Seismometer and pendulum in Han dynasty China, built by Zhang Heng. It is a large...

scientists Ian Wilmut (born 1944) and Keith Campbell (1954–2012). The seismometer innovations thereof: James David Forbes Metaflex fabric innovations thereof:...

001 millimeters (1 μm, or 0.00004 in.) on a seismogram recorded with a Wood-Anderson torsion seismograph. Subsequent magnitude scales are calibrated to be...

atmospheric scientist David Linton – geographer John Milne – inventor of the Seismometer Ukichiro Nakaya – glaciologist David Potts – geotechnical engineer Sir...

Aniakchak is monitored by the Alaska Volcano Observatory since 1997 through seismometers and satellite images, and collects reports from visitors to the caldera...

closely monitored by the United States Geological Survey, which monitors a seismometer network with the geophysics program at the University of Washington and...