SCIENCE 2ND QUARTER

is a transverse waves that carry

energy from one place to another.

They are created as a result of

vibrations between electric field and a

magnetic field.

Formulated the electromagnetic theory.

• JAMES CLERK MAXWELL

• HEINRICH HERTZ

four equations which

summarize the relationship

between electricity and

magnetism.

States that an oscillating electric current should be capable of

radiating energy in the form of a wave known as electromagnetic

waves (EM Waves) that would travel as fast as the speed of light.

• Hertzian waves

• Maxwell’s equations

Verified the predictions of Maxwell; He proved the existence of radio

wave through his experiments; SI unit for Frequency was named

after him.

PROPERTIES OF ELECTROMAGNETIC WAVES; EM WAVES are transverse

waves.

• Electric and Magnetic

  Fields oscillate in an plane that is perpendicular to

  the propagation of the

  wave.

• Electric and Magnetic

  Fields oscillate in an plane that is parallel to

  the propagation of the

  wave.

EM WAVES; MEDIUM

• EM waves do not require a medium to propagate.

• EM waves requires a medium to propagate.

EM waves can travel in vacuum in a speed of ?

PROPERTIES OF ELECTROMAGNETIC WAVES

• Speed of EM

  waves changes

  depending on the

  medium where

  they are passing

  through.

• Speed of EM

  waves doesn't change

  nor depend on the

  medium where

  they are passing

  through.