Overview The Ray Aspect of Light Rays, or beams of light, can travel in three…

Sound   Characteristics of Sound Sound is a longitudinal wave of pressure that travels through…

Magnetism and Magnetic Fields   Electric Currents and Magnetic Fields An electric current will produce…

Circuit Elements   Different Types of Currents An electrical circuit is an interconnection of electrical…

Electrostatics   Electric Charge in the Atom Atoms contain negatively charged electrons and positively charged…

Density and Pressure   Pressure Pressure is scalar quantity which is defined as force per…

Periodic Motion   Period and Frequency The period is the duration of one cycle in…