Black Body Radiation Lamp
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Tungsten filament lamp whose color is temperature dependant in accordance with Planck's radiation law.
[In-Depth Description]
Wien's Displacement Law
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Changes in the spectral intensity distribution of a hot tungsten filament are qualitatively observed as the temperature is varied.
Purcell's Black Body Box
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Cardboard box black body; interior looks black despite being painted white.
[In-Depth Description]
Black Body Radiation Oven
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Clay and iron objects within a kiln; all radiate with same color when at thermal equilibrium.
[In-Depth Description]
Tether-ball Catastrophe
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Ball on string attached to rod; see the classical electron spiral into the nucleus!
[In-Depth Description]
Photoelectric Effect
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Discharge of electroscope using carbon arc UV source.
[In-Depth Description]
Planck's Constant Determination
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Spectral lines from mercury lamp incident on phototube; energy of photons equated to photoelectron stopping potential.
[In-Depth Description]
Electron Diffraction
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Cathode rays incident on crystal samples.
[In-Depth Description]
Uncertainty Principle
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Energy/time reciprocity relation using electromagnetic waves; simultaneous display in energy (frequency) and time domains.
[In-Depth Description]
- SEE ALSO
- Wave Packet simulation
Optical Analog of Uncertainty Principle
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Adjustable single slit diffraction; spatial localization (by slit) results in momentum spread of photons.
Ring of Fire
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deBroglie wavelength nλ=2πr shown by gas flame in a torus.
[In-Depth Description]
Tunneling Analog
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(Frustrated Total Internal Reflection) To reflect or not to reflect at the interface of two prisms in intimate contact? Adjust the potential barrier.
Microwave Tunneling Analog
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3 cm microwaves and prisms made of plastic beads demonstrate total internal reflection in one prism, and coupling of the evanescent wave to a second prism. An audio signal corresponds to the one kiloHertz modulation of the microwaves.
Big Chladni Plate
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Electromagnetically driven plate to show two dimensional modes of vibration.
Single Photon Interference
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Wave/particle duality observed in Young's double slit experiment with camera sensitive to individual photons.
[In-Depth Description]
Photochemical Reaction of Hydrogen and Chlorine
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Different colors of LED light illuminate a small corked test tube with no reaction. Ultraviolet light causes an explosion that shoots the cork across the room.
Contact Us
Mailing Address: Lecture Demonstration Services, Science Center, Rm B-08A, 1 Oxford Street, Cambridge, MA 02138
Campus Location: Science Center B-08A | Tel: (617) 495-5824 | Email: scidemos-at-fas.harvard.edu