vibration- an oscillation of the parts of a fluid or an elastic solid whose equilibrium has been disturbed, or of an electromagnetic wave.
wave- a periodic disturbance of the particles of a substance that may be propagated without net movement of the particles, such as in the passage of undulating motion, heat, or sound.
wave period- For cyclical processes, such as rotation, oscillations, or waves, frequency is defined as a number of cycles per unit time.
crests- A crest is the point on a wave with the maximum value or upward displacement within a cycle.
troughs- A trough is the opposite of a crest, so the minimum or lowest point in a cycle
amplitude- the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position. It is equal to one-half the length of the vibration path.
wavelength- the wavelength of a sinusoidal wave is the spatial period of the wave—the distance over which the wave's shape repeats
frequency- cyclical processes, such as rotation, oscillations, or waves, frequency is defined as a number of cycles per unit time.
hertz- Hertz (Hz) is a unit of frequency, defined as the number of complete cycles of a periodic signal that take place in one second.
transverse waves- a wave in which the direction of displacement is perpendicular to the direction of propagation, as a surface wave of water.
longitudinal waves- Mechanical longitudinal waves are also called compressional waves or compression waves, because they produce compression and rarefaction when traveling through a medium. The other main type of wave is the transverse wave, in which the displacements of the medium are at right angles to the direction of propagation.
Doppler Effect-named after the Austrian physicist Christian Doppler, who proposed it in 1842 in Prague, is the change in frequency of a wave (or other periodic event) for an observer moving relative to its source.
blue shift- a shift toward shorter wavelengths of the spectral lines of a celestial object, caused by the motion of the object toward the observer.
red shift- redshift happens when light or other electromagnetic radiation from an object is increased in wavelength, or shifted to the red end of the spectrum.
shock wave- a region of abrupt change of pressure and density moving as a wave front at or above the velocity of sound, caused by an intense explosion or supersonic flow over a body.
sonic boom- sonic boom, shock wave that is produced by an aircraft or other object flying at a speed equal to or exceeding the speed of sound and that is heard on the ground as a sound like a clap of thunder.
wave- a periodic disturbance of the particles of a substance that may be propagated without net movement of the particles, such as in the passage of undulating motion, heat, or sound.
wave period- For cyclical processes, such as rotation, oscillations, or waves, frequency is defined as a number of cycles per unit time.
crests- A crest is the point on a wave with the maximum value or upward displacement within a cycle.
troughs- A trough is the opposite of a crest, so the minimum or lowest point in a cycle
amplitude- the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position. It is equal to one-half the length of the vibration path.
wavelength- the wavelength of a sinusoidal wave is the spatial period of the wave—the distance over which the wave's shape repeats
frequency- cyclical processes, such as rotation, oscillations, or waves, frequency is defined as a number of cycles per unit time.
hertz- Hertz (Hz) is a unit of frequency, defined as the number of complete cycles of a periodic signal that take place in one second.
transverse waves- a wave in which the direction of displacement is perpendicular to the direction of propagation, as a surface wave of water.
longitudinal waves- Mechanical longitudinal waves are also called compressional waves or compression waves, because they produce compression and rarefaction when traveling through a medium. The other main type of wave is the transverse wave, in which the displacements of the medium are at right angles to the direction of propagation.
Doppler Effect-named after the Austrian physicist Christian Doppler, who proposed it in 1842 in Prague, is the change in frequency of a wave (or other periodic event) for an observer moving relative to its source.
blue shift- a shift toward shorter wavelengths of the spectral lines of a celestial object, caused by the motion of the object toward the observer.
red shift- redshift happens when light or other electromagnetic radiation from an object is increased in wavelength, or shifted to the red end of the spectrum.
shock wave- a region of abrupt change of pressure and density moving as a wave front at or above the velocity of sound, caused by an intense explosion or supersonic flow over a body.
sonic boom- sonic boom, shock wave that is produced by an aircraft or other object flying at a speed equal to or exceeding the speed of sound and that is heard on the ground as a sound like a clap of thunder.