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If a piece of electrically conductive metal is close to the coil, eddy currents will be induced (inductive sensor) in the metal, and this produces a magnetic field of its own. If another coil is used to measure the magnetic field (acting as a magnetometer), the change in the magnetic field due to the metallic object can be detected.
The Hand of Faith is a gold nugget of fine-quality [vague] that was found by Kevin Hillier using a metal detector near Kingower, Victoria, Australia on 26 September 1980. Weighing 875 troy ounces (ozt; 27.21 kg, or 72 troy pounds and 11 troy ounces), the gold nugget was only 12 inches (30 cm) below the surface, resting in a vertical position.
For Rutherford's alpha particle scattering from gold, with mass of 197, the reduced mass is very close to the mass of the alpha particle: = + = For lighter aluminium, with mass 27, the effect is greater: = + = a 13% difference in mass. Rutherford notes this difference and suggests experiments be performed with lighter atoms.
A dowser, from an 18th-century French book about superstitions. Dowsing is a type of divination employed in attempts to locate ground water, buried metals or ores, gemstones, oil, claimed radiations (radiesthesia), [1] gravesites, [2] malign "earth vibrations" [3] and many other objects and materials without the use of a scientific apparatus.
Small amounts of gold have been found in streams draining glacial deposits in the Midwest. Gold prospecting and mining activities allowed on public lands vary with the agency and the location. Gold pans and shovels are commonly allowed, but sluice boxes and suction dredges may be prohibited in some areas.
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In Georgia, Gary metal detects along a creek finding parts of an old horseshoe, a square nail, a silver ring, a belt hanger and jewelry while Alex and Brad find a piece of jewelry. On Lake Michigan, a target is found and scanned. Jeff and another diver dive to the target and find objects that they think look like gold bars.
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