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Red Supergiant Star

A star of 15 solar masses exhausts its hydrogen in about one-thousandth the lifetime of our sun.

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Hits: 6494

Spectrum Physlet

Applet displays the different sequences of lines that make up the hydrogen spectrum.

Visit Spectrum Physlet



Hits: 2636


Red Giant

For stars of less than 4 solar masses, hydrogen burn-up at the center triggers expansion to the red giant phase.

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Hits: 2165

Visit An Introduction to the Electronic Structure of Atoms and Molecules



Hits: 2637

Hydrogen Recombination Spectrum

Information regarding the movement of electrons between energy levels and the expected emission line spectrum.

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Hits: 6541

A Question of Scale

From smaller than an atom to the size of the Universe in 41 steps. Pictures with descriptions at each level.

Visit A Question of Scale



Hits: 2194


Ionizing Radiation

Ionization is the ejection of one or more electrons from an atom or molecule to produce a fragment with a net positive charge.

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Hits: 1722

Bubble Chamber

Device for detecting charged particles and other radiation by means of tracks of bubbles left in a chamber filled with liquid hydrogen or other liquefied gas.

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Hits: 5358


Kids chemistry website, covering atoms, matter, reactions and more. With information and quizzes

Visit Chem4Kids



Hits: 2645

How to make a Jedi lightsaber

An in-depth look at the physics behind trapping light in ultra cold atoms.

Visit How to make a Jedi lightsaber



Hits: 1679

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