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  • Iron fillings showing the magnetic field of two ring magnets. The magnetic field induces magnetism in each of the filings, which then line up in the field. Although the field is actually continuous, interactions between the filings cause them to accumulate in thin arcing lines.This image is part of a seris.
    magnetic-iron-fields_0129.jpg
  • A ring magnet is used to test magnetic fields. This image is part of a series.
    magnetic-NN-liquid-crystal_0146.jpg
  • A ring magnet is used to test magnetic fields. This image is part of a series.
    magnetic-liquid-crystal_0131.jpg
  • A ring magnet is used to test magnetic fields. This image is part of a series.
    magnetic-liquid-crystal_0129.jpg
  • A sheet of liquid crystals align in a magnetic field and show the highest intensity magnetic field as dark green.  This material is used to identify the location of poles on a magnet.  The magnetic field lines go from the north pole to the south pole of the magnet.
    magnetic-liquid-crystal_0130.jpg
  • A sheet of liquid crystals align in a magnetic field and show the highest intensity magnetic field as dark green.  This material is used to identify the location of poles on a magnet.  The magnetic field lines go from the north pole to the south pole of the magnet.
    magnetic-NN-liquid-crystal_0145.jpg
  • A sheet of liquid crystals align in a magnetic field and show the highest intensity magnetic field as dark green.  This material is used to identify the location of poles on a magnet.  The magnetic field lines go from the north pole to the south pole of the magnet.
    magnetic-liquid-crystal_0132.jpg
  • A sheet of liquid crystals align in a magnetic field and show the highest intensity magnetic field as dark green.  This material is used to identify the location of poles on a magnet.  The magnetic field lines go from the north pole to the south pole of the magnet.
    magnetic-liquid-crystal_0126.jpg
  • The inside of a magnetron removed from a microwave oven.  The magnetron is a device that creates microwave radiation. A magnetron consists of an electron tube surrounded by a magnet. As electrons are released from the heated cathode they are forced to take a spiral path to the anode by the magnetic field, creating microwaves. This magnetron creates a microwave radiation that is the same frequency as a water molecule vibrates.  When water is exposed to just the right frequency, the water molecules will gain kinetic energy and become hotter.
    K11-magnetron7111.jpg
  • The inside of a magnetron removed from a microwave oven.  The magnetron is a device that creates microwave radiation. A magnetron consists of an electron tube surrounded by a magnet. As electrons are released from the heated cathode they are forced to take a spiral path to the anode by the magnetic field, creating microwaves. This magnetron creates a microwave radiation that is the same frequency as a water molecule vibrates.  When water is exposed to just the right frequency, the water molecules will gain kinetic energy and become hotter.
    K11-magnetron7101.jpg
  • A demonstration electric motor.  This motor works on the principles of electromagnetism. Electric current running through the coil a magnetic field that opposes the bar magnets and causes the central shaft to rotate.  This converts electrical energy into rotary mechanical motion. .
    K11-motor4179.jpg
  • A Scanning electron microscope (SEM) image of a crystal structure found inside a micrometeorite. The field of view of this image is 80 um wide. Micrometeorites routinely fall all over the surface of earth. This is primarily an iron meteorite with small amounts of other elements. This meteorite melted from atmospheric melting as it was captured in the earths atmosphere. The frictional heating melted the martial and surface tension of the molten metals brought it to a circular shape. Magnetic iron micrometeorites are easy to find with the help of a strong magnet. The crystal structure of the meteorite is visible in this image.
    K18SEM-MM-W7B.jpg
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Ted Kinsman

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