Longitudinal Waves
Longitudinal waves, also known as "l-waves", are waves in which the displacement of the medium is in the same direction as, or the opposite direction to, the direction of travel of the wave.

Untitled Slide

Untitled Slide

Transverse Waves
transverse wave is a moving wave that consists of oscillations occurring perpendicular (or right angled) to the direction of energy transfer. If a transverse wave is moving in the positive x-direction, its oscillations are in up and down directions that lie in the y–z plane. Light is an example of a transverse wave.

Untitled Slide

Untitled Slide

Untitled Slide

Surface Waves
physics, a surface wave is a mechanical wave that propagates along the interface between differing media, usually as a gravity wave between two fluids with different densities. A surface wave can also be an elastic (or a seismic) wave, such as with a Rayleigh or Love wave.

Untitled Slide

FREQUENCY

• The rate at which a vibration occurs that constitutes a wave.

MEDIUM

• the intervening substance through which impressions are conveyed to the senses or a force acts on objects at a distance.

LIGHT WAVES

• lightwave - Computer Definition. Light in the infrared, visible and ultraviolet ranges, which falls between x-rays and microwaves. Wavelengths are between 10 nanometers and one

SOUND WAVES

• plural noun: sound waves a wave of compression and rarefaction, by which sound is propagated in an elastic medium such as air.

RADIO WAVES

• An electromagnetic wave of a frequency between about 10-4 and and 10-11 or 10-12

SOUND WAVES

The definition of a sound wave is a pressure caused by the vibration of something in a medium that transfers energy, like air. An example of a sound wave is a burst of loud music through a quiet forest

PITCH

• "When the length of a string is changed, it will vibrate with a different frequency. Shorter strings have higher frequency and therefore higher pitch. When a musician presses her finger on a string, she shortens its length. The more fingers she adds to the string, the shorter she makes it, and the higher the pitch will be. Diameter is the thickness of the string. Thick strings with large diameters vibrate slower and have lower frequencies than thin ones. A thin string with a 10 millimeter diameter will have a frequency twice as high as one with a larger, 20 millimeter diameter. This means that the thin string will sound one octave above the thicker one. A string stretched between two points, such as on a stringed instrument, will have tension. Tension refers to how tightly the string is stretched. Tightening the string gives it a higher frequency while loosening it lowers the frequency. When string players tighten or loosen their strings, they are altering the pitches to make them in tune. The density of a string will also affect its frequency. Remember that dense molecules vibrate at slower speeds. The more dense the string is, the slower it will vibrate, and the lower its frequency will be. Instruments often have strings made of different materials. The strings used for low pitches will be made of a more dense material than the strings used for high pitches." (NDT Resource Center)

Untitled Slide

Untitled Slide

Untitled Slide