• noun a section containing individual data items in a record
  • noun the force which one object exerts on another
  • noun an area of natural resources, e.g. an oilfield or coalfield
  • noun an area of interest or activity
  • The main types of field encountered in astronomy are gravitational, magnetic and electric. Any mass has a gravitational field, which like electric and magnetic fields are subject to an inverse square law. Electric fields are found surrounding electric charges, and can involve objects being attracted (if they have a charge opposite to that of the object whose field they are in), repelled (if they bear the same charge) or not affected at all if they are electrically neutral. An electric field can be produced by flowing electric current or by a static electric charge. Electric and magnetic fields are essentially manifestations of the same effect, and electricity is generated by movement in magnetic fields. Magnetic fields affect mainly iron, nickel and similar magnetic materials as well as ionised materials like charged particles in the Sun or the Earth’s outer atmosphere.
  • A region of space within which a physical force exerts its influence. Examples include electric fields, magnetic fields, and gravitational fields. An electric field, for instance, is one in which a charged particle or body exerts a force on charged particles or bodies situated in the medium surrounding it. Such fields may be represented by lines of force.
  • In TV, one of two equal parts into which a frame is divided. For example, either of the two scans that are interlaced to make up a frame.
  • A space where computer data is stored, such as a cell in a spreadsheet. Most fields have their associated attributes. For example, it may have a numeric attribute if it contains numbers. A collection of fields is called a record. Also called data field.
  • A setting in which normal operating conditions occur, as opposed, for instance, to a laboratory.

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