What Happens When Waves Travel through a Gap?

Answer

When waves pass through a gap, they undergo what is called as diffraction, and begin to spread out after exiting the gap. This spreading out will be dependent on the wavelength of the waves hitting the gap. If the gap is larger than the wavelength, the waves will spread on a small scale or even remain straight.
Q&A Related to "What Happens When Waves Travel through a Gap"
Sound waves travel through any medium with the exception of vacuum. The denser the medium, the faster the sound waves travel, because the waves can be farther apart.
http://wiki.answers.com/Q/What_happens_when_waves_...
The speed of sound through air is not always the same. It depends on air temperature. This is because air molecules collide with each other more rapidly at higher temperatures. According
http://www.ehow.com/about_6326395_do-waves-travel-...
Because of the differences in types of rock the wave travels as well as variations in temperature and pressure. http://eqseis.geosc.psu.edu/~cammon/HTML/Classes/IntroQuakes/Notes/
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Well, stick your head in the water and you can hear motorboats passing by. Or knock two stones together underwater and listen to the tick. That'd be pretty good evidence to me.
http://wiki.answers.com/Q/What_evidence_is_there_t...
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