Fields are Created by Sources...Reconsidered

• With respect to electric or magnetic or gravitational fields, yes.
• The pressure field (e.g., air) in which sound waves travel is not created by a source.
• Acoustic WAVES have sources.
• Electromagnetic WAVES have sources.

Fields Exist
Fields are Invisible but can be Detected and Measured
Fields are Three-Dimensional
Fields Pass through some Objects
Fields may be Blocked or Altered by some Objects
Fields Map the Strength and Direction of Forces exerted by Sources

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