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The Cat in the Hat Knows a Lot About That! is an animated musical educational children's television series feature starring Martin Short as The Cat in the Hat. The series premiered on Treehouse TV in Canada on August 7, 2010, also airing on YTV and Nickelodeon Canada on weekday mornings from 2012 to 2013, [1] and on PBS Kids and PBS Kids Preschool Block in the US on September 6, 2010.
Magnetism is the class of physical attributes that occur through a magnetic field, which allows objects to attract or repel each other.Because both electric currents and magnetic moments of elementary particles give rise to a magnetic field, magnetism is one of two aspects of electromagnetism.
Magnetic materials and systems are able to attract or repel each other with a force dependent on the magnetic field and the area of the magnets. For example, the simplest example of lift would be a simple dipole magnet positioned in the magnetic fields of another dipole magnet, oriented with like poles facing each other, so that the force ...
A magnet's magnetic moment (also called magnetic dipole moment and usually denoted μ) is a vector that characterizes the magnet's overall magnetic properties. For a bar magnet, the direction of the magnetic moment points from the magnet's south pole to its north pole, [ 15 ] and the magnitude relates to how strong and how far apart these poles ...
The process by which lodestone is created has long been an open question in geology. Only a small amount of the magnetite on the Earth is found magnetized as lodestone. Ordinary magnetite is attracted to a magnetic field as iron and steel are, but does not tend to become magnetized itself; it has too low a magnetic coercivity.
The shape of the magnet was originally created as a replacement for the bar magnet as it makes the magnetic field stronger for a magnet of comparable strength. [5] A horseshoe magnet is stronger because both poles of the magnet are closer to each other and in the same plane which allows the magnetic lines of flux to flow along a more direct path between the poles and concentrates the magnetic ...
An example of a permanent magnet formed from a ferromagnetic material is a refrigerator magnet. [ 2 ] Substances respond weakly to three other types of magnetism— paramagnetism , diamagnetism , and antiferromagnetism —but the forces are usually so weak that they can be detected only by lab instruments.
Of course, this potential dual mechanism theory raises the questions of to what degree each method is responsible for the stimulus, and how they produce a signal in response to the weak magnetic field of the Earth. [9] In addition, it is possible that magnetic senses may be different for different species.
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