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hyperphysics

Atomic Clock

Very accurate clocks can be constructed by locking an electronic oscillator to the frequency of an atomic transition.

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The story of atomic clocks

A long read about the history of the atomic clocks

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Hits: 1806

Explore Big History

Interactively explore the timeline of the universe.

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Hits: 530

How Atomic Clocks Work

A brief description of how atomic clocks work to keep track of time accurately. From HowStuffWorks.com.

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Hits: 1212

How do atomic clocks work?

A great short article on how atomic clocks work from NPL

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Hits: 1641

The Untold Story of Getting from Here to There | Time and Navigation

A site from the Smithsonian dedicated to exploring the relationship between time and navigation from how sailors needed accurate clocks to determine their longitude to how satellites navigation ...

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Hits: 255

Fowler's Physics

Various applets allowing results to be taken for demonstration purposes.

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Hits: 1236

Line Rider

A fun toy that lets you build a sledge run and then test it out. You'll need a good feel for the laws of motion to get results!

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Hits: 4297

Seeking the Cosmic Dawn

A look at the results from BICEP2 detector in the south pole which gives evidence for inflation happening at the start of the universe.

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Hits: 130

How does GPS work?

More information on how GPS satellites calculate your location, from using accurate atomic clocks to ensuring enough coverage.

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Hits: 1084

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