Optical rays are the single line or narrow beam of light from a small or distant source. The behavior of light is easier some time by using ray

Wavelength Multiplexing, Fresnel Reflection, Optical dispersion, Absorption, Scattering, Rayleigh Scattering, Mie Scattering

The field pattern of electromagnetic waves is such that electric field is perpendicular to the magnetic field and both the fields are perpendicular to the direction of propagation.

When the electromagnetic waves are propagated from the transmitter antenna, it travels in a free space, up to receiver antenna.

Characteristics of Electromagnetic Waves. Field, Field Angle, Direction During Propagation, Reflection, Refraction, Intensity, Attenuation, Polarization,

When the alternating current passes through a wire than it sets up an electromagnetic field that propagate away from the wire.

The Q factor of the cavity resonator is the ratio between the stored energy of the cavity to the power losses in the cavity.

1st theory is the particle theory, which is presented to explain. The phenomena that were observed concerning light.

As shown in the given diagram. The multi cavity klystron consist of a glass envelope in which there is an electron gun composed of heater and cathode.