Plate Tectonics: A Unifying Theory
... plateaus that rise off the seafloor. Commonly form near hot-spot volcanoes, consisting of seamounts and guyots extending away from spreading ridges ...
... plateaus that rise off the seafloor. Commonly form near hot-spot volcanoes, consisting of seamounts and guyots extending away from spreading ridges ...
Working Principle of Permanent Magnet DC Motor or PMDC Motor
... an armature. Here the stator which is a steel cylinder. The magnets are mounted in the inner periphery of this cylinder. The permanent magnets are mounted in such a way that the N – pole and S – pole of each magnet are alternatively faced towards armature as shown in the figure below. That means, if ...
... an armature. Here the stator which is a steel cylinder. The magnets are mounted in the inner periphery of this cylinder. The permanent magnets are mounted in such a way that the N – pole and S – pole of each magnet are alternatively faced towards armature as shown in the figure below. That means, if ...
Magnetic Force CHECK YOUR ANSWER
... • the induced voltage in a coil is proportional to the number of loops, multiplied by the rate at which the magnetic field changes within those loops • amount of current produced by electromagnetic induction is dependent on – resistance of the coil ...
... • the induced voltage in a coil is proportional to the number of loops, multiplied by the rate at which the magnetic field changes within those loops • amount of current produced by electromagnetic induction is dependent on – resistance of the coil ...
On the origin of El Chichón volcano and subduction of
... oceanic crust represent another important fluid reservoir, and their metamorphic changes lead to fluid release into the mantle wedge, which enhance the serpentinization process. The serpentinization process not only produce magnetite and increase significantly the remanent magnetization (with an order ...
... oceanic crust represent another important fluid reservoir, and their metamorphic changes lead to fluid release into the mantle wedge, which enhance the serpentinization process. The serpentinization process not only produce magnetite and increase significantly the remanent magnetization (with an order ...
Magnetic Mysteries
... We say the field is strong near the poles because of the relatively dense number of flux lines. The bearing, after becoming magnetized, also has its own poles which the paper clip is affected by. You could say that the lines of flux are most dense where they go through the bearing and touch the pap ...
... We say the field is strong near the poles because of the relatively dense number of flux lines. The bearing, after becoming magnetized, also has its own poles which the paper clip is affected by. You could say that the lines of flux are most dense where they go through the bearing and touch the pap ...
Developer Notes
... 1. In magnets, do likes or opposites attract? 2. The two poles of a magnet are called north and south. If you have a new magnet, how can you tell which end is north? 3. Can a magnet exist with just a north pole? 4. If you place a compass in a magnetic field, which way will the north pole point? ...
... 1. In magnets, do likes or opposites attract? 2. The two poles of a magnet are called north and south. If you have a new magnet, how can you tell which end is north? 3. Can a magnet exist with just a north pole? 4. If you place a compass in a magnetic field, which way will the north pole point? ...
Quantitative imaging
... of optimizing clinical decision making and patient outcome. The most prevalent current topic for quantitative imaging is oncology,1–7 where new targeted anticancer therapies result in response patterns that often cannot be determined by conventional morphologic imaging alone. In this scenario, funct ...
... of optimizing clinical decision making and patient outcome. The most prevalent current topic for quantitative imaging is oncology,1–7 where new targeted anticancer therapies result in response patterns that often cannot be determined by conventional morphologic imaging alone. In this scenario, funct ...
- Natural Sciences Publishing
... field on transverse wave propagation in an anisotropic incompressible dissipative medium is very important for the possible application in various branches of science and technology such as earthquake science, acoustic, geophysics and optics etc. Zhu et al. [28] have been discussed wave propagation ...
... field on transverse wave propagation in an anisotropic incompressible dissipative medium is very important for the possible application in various branches of science and technology such as earthquake science, acoustic, geophysics and optics etc. Zhu et al. [28] have been discussed wave propagation ...
Earth's magnetic field
Earth's magnetic field, also known as the geomagnetic field, is the magnetic field that extends from the Earth's interior to where it meets the solar wind, a stream of charged particles emanating from the Sun. Its magnitude at the Earth's surface ranges from 25 to 65 microteslas (0.25 to 0.65 gauss). Roughly speaking it is the field of a magnetic dipole currently tilted at an angle of about 10 degrees with respect to Earth's rotational axis, as if there were a bar magnet placed at that angle at the center of the Earth. Unlike a bar magnet, however, Earth's magnetic field changes over time because it is generated by a geodynamo (in Earth's case, the motion of molten iron alloys in its outer core).The North and South magnetic poles wander widely, but sufficiently slowly for ordinary compasses to remain useful for navigation. However, at irregular intervals averaging several hundred thousand years, the Earth's field reverses and the North and South Magnetic Poles relatively abruptly switch places. These reversals of the geomagnetic poles leave a record in rocks that are of value to paleomagnetists in calculating geomagnetic fields in the past. Such information in turn is helpful in studying the motions of continents and ocean floors in the process of plate tectonics.The magnetosphere is the region above the ionosphere and extends several tens of thousands of kilometers into space, protecting the Earth from the charged particles of the solar wind and cosmic rays that would otherwise strip away the upper atmosphere, including the ozone layer that protects the Earth from harmful ultraviolet radiation.