theory

Electromagnetism is a theory unified by James Clerk Maxwell to explain the interrelationship between electricity and magnetism. At the heart of this theory is the notion of an electromagnetic field.

Francis Ford Coppola, 2007

A wide variety of systems of interconnected components are called networks. Specific examples include:

• transport networks,

  • roads,

  • railroads,

  • shipping routes and

  • airlines,

Film criticism is the analysis and evaluation of films, individually and collectively. In general this can be divided into journalistic criticism that appears regularly in newspapers and other popular, mass-media outlets and academic criticism by film scholars that is informed by film theory and published in journals.

Simulated view of a black hole in front of the Milky Way. The hole has 10 solar masses and is viewed from a distance of 600 km.