The Electromagnetic and Visible Spectra Electromagnetic waves are capable of transporting energy through the vacuum of outer space. Electromagnetic waves are produced by a vibrating electric charge and as such, they consist of both an electric and a magnetic component. Electromagnetic waves exist with an enormous range of frequencies. This continuous range of frequencies is known as the electrom...

A wave can be described as a disturbance that travels through a medium from one location to another location. Consider a slinky wave(A Slinky is a coil-shaped toy) as an example of a wave. When the slinky is stretched from end to end and is held at rest, it assumes a natural position known as the equilibrium or rest position. The coils of the slinky naturally assume this position, spaced equally f...

Electric Potential Difference Electric Potential Moving a positive test charge against the direction of an electric field is like moving a mass upward within Earth's gravitational field. Both movements would be like going against nature and would require work by an external force. This work would in turn increase the potential energy of the object. On the other hand, the movement of a positive t...

Charge as a Quantity Like mass, the charge of an object is a measurable quantity. the charge possessed by an object is often expressed using the scientific unit known as the Coulomb. Just as mass is measured in grams or kilograms, charge is measured in units of Coulombs (abbreviated C). Because one coulomb of charge is an abnormally large quantity of charge, the units of micro Coulombs (uC) or na...

Gravity is a force which exists between the Earth and the objects which are near it.. We have become accustomed to calling it the force of gravity and have even represented it by the symbol Fgrav. Not to be confused with the force of gravity (Fgrav), the acceleration of gravity (g) is the acceleration experienced by an object when the only force acting upon it is the force of gravity. On and near...