How P waves travel
Learn about the transmission of P waves (primary waves), which alternately squeeze and stretch the transmitting medium, causing it to move back and forth in the direction of propagation.
Encyclopædia Britannica, Inc.
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Encyclopædia Britannica, Inc.It's a common misconception that no sharks ever sleep.Media Editor: Miranda Chabot
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Encyclopædia Britannica, Inc.Cloud seeding can produce an extra 5 to 15% of precipitation.
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Encyclopædia Britannica, Inc.Understanding energy flow in ecosystems.
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Encyclopædia Britannica, Inc.The S wave
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Encyclopædia Britannica, Inc.We're picking up earthquake vibrations.
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Encyclopædia Britannica, Inc.The shifting rock in an earthquake causes vibrations called seismic waves that travel within Earth or along its surface. The four main types of seismic waves are P waves, S waves, Love waves, and Rayleigh waves.
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Library of Congress Motion Picture, Broadcasting and Recorded Sound Division, Washington, D.C.San Francisco after the 1906 earthquake.
