The small variations in the Earth’s magnetic field are being measured using this proton precession magnetometer (PPM) which detects the ferrous objects on land and at sea. To map the positions of ...

When you get an MRI scan, the machine exploits a phenomenon called nuclear magnetic resonance (NMR). Certain kinds of atomic nuclei—including those of the hydrogen atoms in a water molecule—can be ...

William A. Martin, James E. Bruseth and Robert J. Huggins Magnetic surveys and electromagnetic conductivity surveys were conducted at several sites during the course of field work at the ...

Florida Scientist, Vol. 42, No. 4 (Fall, 1979), pp. 236-242 (7 pages) Three hundred and seven measurements of the magnetic field with a proton precession magnetometer in Alachua County, Florida, ...