The three laws of robotics state that a robot cannot harm a human, must obey orders and must act to protect itself in situations that will not conflict with the first two laws. These laws were created by science-fiction ... More » Science Physics

The three levels, or types, of law enforcement in the United States are local, state and federal. The tiers of law enforcement allow authorities to operate on small, intermediate and large scales. More » Government & Politics Law Enforcement

The three laws of motion were introduced by Sir Isaac Newton, and they provide a method of interpreting the motion of objects through the physical universe. The laws define how the motion of an object can change when con... More » Science Physics Motion & Mechanics
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The Law of Attraction is the belief that a person's thoughts attract specific things, people and situations into his life. The Law of Repulsion is the belief that the more a person thinks about what he does not want, the... More » Science Physics

Entropy is seen in situations that involve the dispersal of energy from a concentrated state to a less concentrated one, such as a hot pan cooling down, a tire blowing and releasing its air, the rusting of metal or cream... More » Science Physics

Weight distribution laws play an important role in the field of structural engineering, which is a body of knowledge that is concerned with the response of structures to the distribution of loads. Columns and arches are ... More » Science Physics

One example of a parasitic relationship in coral reefs includes crustaceans from the Copepoda or Isopoda orders, which attach to fish in the reefs, sometimes causing harm but at other times simply holding on and feeding ... More » Science Biology