1 / 9

The Cause of Magnetism

SPI 0807:12.2 Electromagnetism. Notes. Science. The Cause of Magnetism. Atoms and Domains In materials such as iron, nickel, and cobalt, groups of atoms are in areas called domains. The north and south poles in a domain line up and make a strong magnetic field. SPI 0807:12.2

helmut
Télécharger la présentation

The Cause of Magnetism

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. SPI 0807:12.2 Electromagnetism Notes Science The Cause of Magnetism • Atoms and Domains • In materials such as iron, nickel, and cobalt, groups of atoms are • in areas called domains. • The north and south poles in a domain line up and make a • strong magnetic field.

  2. SPI 0807:12.2 Electromagnetism Notes Science • Electromagnetism • Is the interaction between electricity and magnetism. • Electric current produces a magnetic field. • An electromagnet consists of a solenoid wrapped around an iron core. • Turning Electromagnets On and Off: • Unlike permanent magnets, electromagnets can be turned on and off as needed. • Electromagnetic Strength • You can adjust the strength of an electromagnet two ways • 1) Use more electrical current • 2) Use more coils

  3. SPI 0807:12.2 Electromagnetism Notes Science • How do we use electromagnets? • Found in electrical motors and switches • To lift objects • Example: Junkyard crane-magnets • Example: Maglev trains • To propel objects • Example: Railguns as weapons • Example: Railguns as launch platforms • To look inside of people • Example: Magnetic Resonance Imaging (MRI)

  4. SPI 0807:12.2 Electromagnetism Notes Science • How do we use electromagnets? • To lift objects • Example: Junkyard crane-magnets • Video Clip: Scrapyard Electromagnet In Action

  5. SPI 0807:12.2 Electromagnetism Notes Science • How do we use electromagnets? • To lift objects • Example: Maglev trains (magnetic leviation-reduces friction) • Video Clip: How Maglev Trains Work

  6. SPI 0807:12.2 Electromagnetism Notes Science • How do we use electromagnets? • To propel objects • Example: Railguns as weapons • Video Clip: U.S. Navy Railgun

  7. SPI 0807:12.2 Electromagnetism Notes Science • How do we use electromagnets? • To propel objects • Example: Railguns as launch platforms (for space)

  8. SPI 0807:12.2 Electromagnetism Notes Science • How do we use electromagnets? • To propel objects • Example: Railguns as launch platforms (for aircraft) • Video Clip: Aircraft Carrier Launcher

  9. SPI 0807:12.2 Electromagnetism Notes Science • How do we use electromagnets? • To look inside of people • Example: Magnetic Resonance Imaging (MRI) • Video Clip: MRI Magnetic Field Strength

More Related