The Cause of Magnetism - PowerPoint PPT Presentation

Loading...

PPT – The Cause of Magnetism PowerPoint presentation | free to view - id: 748ee2-ZTFiZ



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

The Cause of Magnetism

Description:

strong magnetic field. Electromagnetism Is the interaction between electricity and magnetism. ... Maglev trains (magnetic leviation-reduces friction) ... – PowerPoint PPT presentation

Number of Views:44
Avg rating:3.0/5.0
Slides: 10
Provided by: Jame3373
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: The Cause of Magnetism


1
SPI 080712.2 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 080712.2 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 080712.2 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 080712.2 Electromagnetism
Notes
Science
  • How do we use electromagnets?
  • To lift objects
  • Example Junkyard crane-magnets
  • Video Clip Scrapyard Electromagnet In Action

5
SPI 080712.2 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 080712.2 Electromagnetism
Notes
Science
  • How do we use electromagnets?
  • To propel objects
  • Example Railguns as weapons
  • Video Clip U.S. Navy Railgun

7
SPI 080712.2 Electromagnetism
Notes
Science
  • How do we use electromagnets?
  • To propel objects
  • Example Railguns as launch platforms (for
    space)

8
SPI 080712.2 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 080712.2 Electromagnetism
Notes
Science
  • How do we use electromagnets?
  • To look inside of people
  • Example Magnetic Resonance Imaging (MRI)
  • Video Clip MRI Magnetic Field Strength
About PowerShow.com