Sea-Floor Spreading
... valley of the Ridge – they looked like pillows! These rocks hardened quickly after erupting, and only underwater and concluded that material must be erupting continually underwater at this location! ...
... valley of the Ridge – they looked like pillows! These rocks hardened quickly after erupting, and only underwater and concluded that material must be erupting continually underwater at this location! ...
An IC/Microfluidic Hybrid Microsystem for 2D Magnetic Manipulation
... spatially patterned magnetic fields utilizing an integrated microelectromagnet array, which is controlled by integrated electronics. The magnetic fields can manipulate individual cells tagged by magnetic beads that are suspended inside the microfluidic system. The spatial patterns of the magnetic fi ...
... spatially patterned magnetic fields utilizing an integrated microelectromagnet array, which is controlled by integrated electronics. The magnetic fields can manipulate individual cells tagged by magnetic beads that are suspended inside the microfluidic system. The spatial patterns of the magnetic fi ...
Sunspots Today: A Cheshire Cat
... using spectral polarization signals from the Zeeman effect. Flux measurements are subject to scattered light; the fields they deduce in sunspot umbrae are much less, often by a factor of two, than the field strength given by the Fe 1564 nm splitting (6). The latter does not involve polarization sens ...
... using spectral polarization signals from the Zeeman effect. Flux measurements are subject to scattered light; the fields they deduce in sunspot umbrae are much less, often by a factor of two, than the field strength given by the Fe 1564 nm splitting (6). The latter does not involve polarization sens ...
declination - Troop 233, Bethesda, MD
... needle would not rotate freely, and hence would not work properly. The Earth's magnetic field, as measured by a magnetic sensor on or above the Earth's surface, is actually the sum of magnetic fields generated by a variety of sources. These fields are superimposed on each other and through inductive ...
... needle would not rotate freely, and hence would not work properly. The Earth's magnetic field, as measured by a magnetic sensor on or above the Earth's surface, is actually the sum of magnetic fields generated by a variety of sources. These fields are superimposed on each other and through inductive ...
The History of Magnets and Electromagents
... The History of Magnets and Electromagents Magnets and electromagnets have many uses, every electric motor, generator or transformer requires a magnetic field for it's operation. With the exception of a few special types, all use electromagnets. The magnets mounted on large cranes are used to lift he ...
... The History of Magnets and Electromagents Magnets and electromagnets have many uses, every electric motor, generator or transformer requires a magnetic field for it's operation. With the exception of a few special types, all use electromagnets. The magnets mounted on large cranes are used to lift he ...
Constant dB/dt DC Characterisation Through Digital Control of
... for their finite element design packages. Control over the rate of change of flux density when plotting DC BH loops is of paramount importance when characterising advanced magnetic materials which often exhibit large values of dB/dt for a linear change of applied field. These materials include mater ...
... for their finite element design packages. Control over the rate of change of flux density when plotting DC BH loops is of paramount importance when characterising advanced magnetic materials which often exhibit large values of dB/dt for a linear change of applied field. These materials include mater ...
Geomagnetism - Career Account Web Pages
... In a magnetic field: magnetic atoms align to a very small degree with the field ⇒ Weak magnetization ⇒ Magnetization disappears if the field is removed ⇒ = paramagnetism In some materials: magnetic atoms align quasi-perfectly with the field ⇒ Strong magnetization ⇒ Magnetization remains if the field ...
... In a magnetic field: magnetic atoms align to a very small degree with the field ⇒ Weak magnetization ⇒ Magnetization disappears if the field is removed ⇒ = paramagnetism In some materials: magnetic atoms align quasi-perfectly with the field ⇒ Strong magnetization ⇒ Magnetization remains if the field ...
What is magnetism?
... • Magnetic field lines – 3D lines which tiny bar magnets lie along. Magnetic field lines run from N to S. • A compass can be used to map out the magnetic field. • Field forms closed “flux lines” around the magnet (lines of magnetic flux never intersect) ...
... • Magnetic field lines – 3D lines which tiny bar magnets lie along. Magnetic field lines run from N to S. • A compass can be used to map out the magnetic field. • Field forms closed “flux lines” around the magnet (lines of magnetic flux never intersect) ...
Magnetochemistry
Magnetochemistry is concerned with the magnetic properties of chemical compounds. Magnetic properties arise from the spin and orbital angular momentum of the electrons contained in a compound. Compounds are diamagnetic when they contain no unpaired electrons. Molecular compounds that contain one or more unpaired electrons are paramagnetic. The magnitude of the paramagnetism is expressed as an effective magnetic moment, μeff. For first-row transition metals the magnitude of μeff is, to a first approximation, a simple function of the number of unpaired electrons, the spin-only formula. In general, spin-orbit coupling causes μeff to deviate from the spin-only formula. For the heavier transition metals, lanthanides and actinides, spin-orbit coupling cannot be ignored. Exchange interaction can occur in clusters and infinite lattices, resulting in ferromagnetism, antiferromagnetism or ferrimagnetism depending on the relative orientations of the individual spins.