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Stoke's Law

Brief description of Stokes' law and edge effects.

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Detect The Jupiter Like Planet Around Three Stars

Details of how large planets have been detected around three other solar type stars. Understanding Doppler wobble aided by an exercise.

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Hits: 2524

Ripple Physlet

This applet shows interference effects with waves.

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Hits: 1509

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Interaction of radiation with matter

Different parts of the electromagnetic spectrum have very different effects on different things.

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Hits: 1688

Steamy Science: Demonstrating Condensation

A simple experiment to demonstrate the effects of pressure and how gases work.

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Hits: 320

Magnetic Reversals

Space weather effects on technology such as GPS, power systems, submarines, satellites, planes and more.

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Doppler Physlet

Vary the velocity and notice the wavelength shift ahead of and behind the source. A shock wave, i.e., sonic boom, can be seen to form if the speed of the source is comparable to the phase velocity.

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Hits: 1438

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Cygnus X-1

Doppler studies of this blue supergiant in Cygnus indicate a period of 5.6 days in orbit around an unseen companion. The mass of the companion is calculated to be 8-10 solar masses, much too large to ...

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How do you find planets around other stars? - The Economist explains

A brief explanation how scientists find exoplanets from the radial method, to measuring Doppler shifts to measure drops in the intensity of light from stars.

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NASA to send spidernauts into space

News story about an upcoming experiment on the effects of microgravity on living organisms.

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