Fields are Three-Dimensional...Reconsidered

• Many of the fields we encounter are three-dimensional (require an x, y, z coordinate to describe).
• However, not all fields have to be described with an x, y and z coordinate.
• A field on a surface would be described with two coordinates (such as the surface temperature at any location on the ocean).

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

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