Atomic and Molecular Physics

Atomic and Molecular Crystal Models

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Wooden, plastic, and styrofoam models for show-n-tell. (See also Wooden Orbital Models)

Flame Tests

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Salts of various elements give off characteristic colors when burned in a flame; diffraction grating reveals discreet colors.

Electrical Discharges in Air

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The electrical characteristics of a column of air are observed as a function of pressure.

Tower of Spectra

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Assembly of three gas discharge tubes and white light source for spectral analysis with diffraction gratings.

[In-Depth Description]

Resonance Radiation/Absorption

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Heated sodium vapor is transparent when illuminated by white light and opaque when illuminated by light from a sodium lamp.

[In-Depth Description]

Fraunhofer Absorption

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Sodium "D" absorption lines are observed when sodium is burned in the optical path of a white light spectrum.

[In-Depth Description]

Street Lamp Spectra

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Projected emission spectra from large sodium and mercury lamps using elliptic reflectors.

[In-Depth Description]

Collisional Broadening

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Na D-doublet absorption lines broaden into one large absorption band due to increase in pressure/temperature.

[In-Depth Description]

Crookes Tube Flourescent Minerals

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Five minerals in a Crookes tube flouresce bright red, green, blue, yellow, and orange when bombarded with energetic electrons.

Fluorescent Minerals

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Three mineral samples (sealed in a vacuum flask) glow red, green, and blue when bombarded by electrons.

[In-Depth Description]

Periodic Potential

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Balls in a frame simulating the repeating potential wells of a lattice.

[In-Depth Description]

Field Emission Electron Microscope

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The crystalline structure of a tungsten filament is revealed by electron field emission.

Mass Spectrometry

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A model in which a magnetic field is used to separate steel ball bearings by mass.

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