Electromagnetic - NUS Physics Department
... Similarly a charge moving in the vicinity of another moving charge is found to experience a force (over and above the electrostatic force). A magnetic field may be conceived to be established by one current (or moving charge) and this field then acts on the second current (or moving charge) in the f ...
... Similarly a charge moving in the vicinity of another moving charge is found to experience a force (over and above the electrostatic force). A magnetic field may be conceived to be established by one current (or moving charge) and this field then acts on the second current (or moving charge) in the f ...
Document
... If the conductor is part of a coil with the current going into the coil on the right and out on the left, the coil will spin ( as per an electric motor) ...
... If the conductor is part of a coil with the current going into the coil on the right and out on the left, the coil will spin ( as per an electric motor) ...
r - web page for staff
... • We can force moments in different domains to align in the same direction by applying external magnetic fields from permanent magnets or electromagnets. • Apply magnetic fields will exert force on moments in domains so that they are parallel applied field. Under such Condition, we say that material ...
... • We can force moments in different domains to align in the same direction by applying external magnetic fields from permanent magnets or electromagnets. • Apply magnetic fields will exert force on moments in domains so that they are parallel applied field. Under such Condition, we say that material ...
Magnetic Resonance Force Microscopy
... • Contact mode AFM techniques cannot be used for imaging at a scale that is needed to detect single spins • The contact between the needle and the surface can damage both if not used with extreme care • Although many competing imaging techniques have been developed, AFM is still a robust technique • ...
... • Contact mode AFM techniques cannot be used for imaging at a scale that is needed to detect single spins • The contact between the needle and the surface can damage both if not used with extreme care • Although many competing imaging techniques have been developed, AFM is still a robust technique • ...
Atomic and molecular physics Revision lecture
... Broadening of spectral lines due to: (1) Natural broadening – finite lifetime of transition (2) Doppler broadening – random distribution of speeds (MaxwellBoltzmann) leads to a distribution of Doppler shifts. Usually much ...
... Broadening of spectral lines due to: (1) Natural broadening – finite lifetime of transition (2) Doppler broadening – random distribution of speeds (MaxwellBoltzmann) leads to a distribution of Doppler shifts. Usually much ...
Magnotherapy - The Facts
... of a giant magnet and the planets that rotate around it are satellites held in orbit by its gravity. On a reduced scale each planet has its own field and within that field may be one or more satellites. The Earth is a planet and the Moon (which has its own separate field) is the Earth's satellite, h ...
... of a giant magnet and the planets that rotate around it are satellites held in orbit by its gravity. On a reduced scale each planet has its own field and within that field may be one or more satellites. The Earth is a planet and the Moon (which has its own separate field) is the Earth's satellite, h ...
Comparison of Total Magnetic Field to Vertical Magnetic Gradient
... It is unusual to find total magnetic field data presented or discussed in the body of archaeological geophysics case histories. Reasons for this may seem obvious: 1) total field data are subject to diurnal variations and require corrections and 2) vertical gradient data provides higher resolution re ...
... It is unusual to find total magnetic field data presented or discussed in the body of archaeological geophysics case histories. Reasons for this may seem obvious: 1) total field data are subject to diurnal variations and require corrections and 2) vertical gradient data provides higher resolution re ...
Magnetometer
Magnetometers are measurement instruments used for two general purposes: to measure the magnetization of a magnetic material like a ferromagnet, or to measure the strength and, in some cases, the direction of the magnetic field at a point in space.The first magnetometer was invented by Carl Friedrich Gauss in 1833 and notable developments in the 19th century included the Hall Effect which is still widely used.Magnetometers are widely used for measuring the Earth's magnetic field and in geophysical surveys to detect magnetic anomalies of various types. They are also used militarily to detect submarines. Consequently, some countries, such as the USA, Canada and Australia classify the more sensitive magnetometers as military technology, and control their distribution.Magnetometers can be used as metal detectors: they can detect only magnetic (ferrous) metals, but can detect such metals at a much larger depth than conventional metal detectors; they are capable of detecting large objects, such as cars, at tens of metres, while a metal detector's range is rarely more than 2 metres.In recent years magnetometers have been miniaturized to the extent that they can be incorporated in integrated circuits at very low cost and are finding increasing use as compasses in consumer devices such as mobile phones and tablet computers.