The maximum displacement of the body in vibration.
Period:
The time taken by a body to complete one vibration.
Frequency:
Frequency is the number of oscillations completed in a unit
time
(f = 1/T).
Resonance:
The natural frequency of a body executing forced vibrations
is equal to the input frequency. The body vibrates with maximum
amplitude. The frequency is called resonant frequency
Mechanical Wave:
A mechanical wave is just a disturbance that propagates
through a medium
Electromagnetic Wave:
An electromagnetic wave is simply light of a visible or
invisible wavelength. Oscillating intertwined electric and
magnetic fields comprise light. Light can travel without medium
Transverse Wave:
In a transverse wave the particles in the medium move
perpendicular to the direction of the wave. Eg. Light waves,
waves on strings.
Longitudinal Wave:
The particles in the medium move parallel to the direction
of the wave. Eg. Sound waves
Interference:
The superposition of two waves of the same frequency and
wavelength traveling with a phase difference which remains
constant with time. This phenomenon is called interference. The
pattern so formed is called interference pattern.
Standing Wave:
Superposition of two waves of same amplitude and wavelength
moving in opposite direction with no energy propagation.
Nodes:
The points of no displacement when standing waves are
formed.
Antinodes:
The points along the medium which vibrate back and forth
with maximum displacement.
