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"speed of sound"
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Read about how sound travels in the ocean, the SoFAR channel and one experiment to test how far could you hear a sound underwater.
Info on the speed of light, and how quickly it travels through water, air or diamond. Also contains a good overview of historical measurements of the speed of light.
A good explanation of how laser (LIDAR) speed guns are used to measure a car's speed. There are links to related questions.
A brief description of how Hypersonic Planes like the X-43A reach 10 times the speed of sound (mach 10). rom HowStuffWorks.com.
It's a mixture of technology in the bikes and how quickly a rider can get through the air.
The basics of sound waves, including really useful animations of how sound travels
A basic site dealing with the speed and wavelength of electromagnetic waves.
Good clear introduction to sound concepts with diagrams, including why you sound good singing in the shower!
This applet simulates collisions in one dimension. Users can change variables of mass, elasticity and initial speeds of masses on an air track.
Details of the experiment conducted to determine the speed of light including Ole Römer's observation with an eclipse of Io, Jupiter's moon.
Showing 21 - 30 of 179