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rarefactions
Light is an example of an electromagnetic (EM) wave. EM waves are transverse waves, not compressional waves. Sound waves are compressional waves, so both sound traveling through air and water would be compressional. Waves traveling along a coiled spring compress the coils together and spread them apart, so this is also an example of a compressional wave.
Molecules are, in general, farthest apart from one another in the gas phase.
In air,as you move along the wave the molecules go through a cycle where in one region they are closer together and then farther down there is another region where they are further apart. This cycle repeats. The Length of one of these cycles is the wavelength. Go to the Related Links below for good animations.
a slinky spread out and then grab a few coils and release and watch a compressional wave! Another example is a sound wave. the particles compressed together form a compression. The particles more widely spread apart form a rarefaction.slinkySound waveCompressional waves are also called mechanical waves. Examples include the plasma waves or guided waves.
rarefactions
if you squeeze a part of the spring close together the other part of the spring is going to be more apart .
In a spring, squeezing some coils together more tightly causes the nearby coils to be more spread apart
In a spring, squeezing some coils together more tightly causes the nearby coils to be more spread apart. So this is how it increases.
In a spring, squeezing some coils together more tightly causes the nearby coils to be more spread apart. So this is how it increases.
Light is an example of an electromagnetic (EM) wave. EM waves are transverse waves, not compressional waves. Sound waves are compressional waves, so both sound traveling through air and water would be compressional. Waves traveling along a coiled spring compress the coils together and spread them apart, so this is also an example of a compressional wave.
Wavelength
Mercury and Uranus are the two planets that are farthest apart.
The particles of helium are farthest apart in a balloon.
The two farthest apart NEIGHBORING PLANETS are Neptune and Uranus!
Molecules are, in general, farthest apart from one another in the gas phase.
Lines of longitude are farthest apart where they intersect the line of the equator.