Obstacle - Physical Barriers

Physical Barriers

As physical obstacles, we can enumerate all those physical barriers that block the action and prevent the progress or the achievement of a concrete goal. Examples:

  • architectural barriers that hinder access to people with reduced mobility;
  • doors, gates, and access control systems, designed to keep intruders or attackers out;
  • large objects, fallen trees or collapses through passageways, paths, roads, railroads, waterways or airfields, preventing mobility;
  • sandbanks, rocks or coral reefs, preventing free navigation;
  • hills, mountains and weather phenomena preventing the free traffic of aircraft;
  • meteors, meteorites, micrometeorites, cosmic dust, comets, space debris, strong electromagnetic radiation or gravitational field, preventing a spacecraft from navigating freely in space.

Read more about this topic:  Obstacle

Famous quotes containing the words physical and/or barriers:

    Vanity of science. Knowledge of physical science will not console me for ignorance of morality in time of affliction, but knowledge of morality will always console me for ignorance of physical science.
    Blaise Pascal (1623–1662)

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    Emma Goldman (1869–1940)