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"time travel", type: Website
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A basic explanation of sound: what it is, how it travels, how you characterise sounds (frequency, wavelegth and intensity) and how they are made.
This simulation shows two graphs where the user can vary initial displacement, velocity and acceleration and see the corresponding changes to the Displacement-Time and Velocity-Time Graphs.
Shows, by means of simple animation, the displacement time, velocity time, and acceleration time graphs for an object moving at constant negative velocity.
Shows, by means of simple animation, the displacement time, velocity time, and acceleration time graphs for an object moving at constant positive velocity.
Find out how scientists at the National Physics Laboratory study time.
This site allows you to convert between a wide variety of Time units.
An introduction to time keeping and how time is agreed around the world.
Build your own lever and see one in action.
An applet which allows the user to see how a car stops given certain braking conditions.
Essays on time, some history and biography with links to other sources. This site is part of the ThinkQuest competition and so is created by students.
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