 Standing Wave
 Travelling Wave




Energy
 Energy is not transferred by the wave although it does have a wave energy.
 Energy is transferred by the wave.

Amplitude
 Amplitude varies along the wave. Maximum amplitude is , at antinode. Amplitude is zero, at node.
 Amplitude, , is the same along the wave.

Frequency
 All points oscillate with the identical frequency.
 All points oscillate with the identical frequency.

Wavelength
 Double the distance from adjacent nodes, or adjacent antinodes.
 Distance between two neighboring successive points which are in phase.

Phase
 All points between adjacent nodes are moving in phase.
 All points along a wavelength are moving with different phases.

 Openopen system
frequency increases in multiples of the fundamental/1^{st} harmonic, f_{0}: f_{0}, 2f_{0}, 3f_{0}, ... (even & odd multiples) 

 Closesclosed system
frequency increases in multiples of the fundamental/1^{st} harmonic, f_{0}: f_{0}, 2f_{0}, 3f_{0}, ... (even & odd multiples) 

 Openclosed system (hybrid)
frequency increases in odd multiples of the fundamental/1^{st} harmonic, f_{0}: f_{0}, 3f_{0}, 5f_{0}, ... (odd multiples only).  