| Videos: 28 results |
Discovery Videos Lyubov Hoffman Laroche, Gary Wulfsberg, Barbara Young
The use of digital video for instruction has many advantages. In many situations the only way to present some chemical phenomena is through the use of video. The two video lessons presented here are examples intended to supplement our article in the August 2003 issue of JCE.
Descriptive Chemistry |
Periodicity / Periodic Table
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Sodium Chloride Crystal Cleavage
A knife is placed on a large sodium chloride crystal parallel to a cleavage plane. When the knife is tapped, the crystal breaks cleanly, creating two smaller crystals.
Crystals / Crystallography |
Ionic Bonding |
Solids
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Standing Waves on a Wave Demonstrator (with frequency)
The relationship between frequency and wavelength for standing waves on a 0.90 m short-rod wave demonstrator is explored. The frequency is displayed at the bottom of the screen.
Quantum Chemistry
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Energy Dissipation, Constructive and Destructive Interference
Important wave phenomena include energy dissipation (wave damping) and wave interference as seen in the following slinky demonstrations.
Quantum Chemistry
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Waves Consisting of Single Pulses
Characteristics of single pulse waves include direction of displacement and wave speed illustrated in the following slinky demonstrations.
Quantum Chemistry
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Wave Trains
Examples of transverse wave trains in a Slinky™ are shown.
Quantum Chemistry
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Waves in a Slinky™
A Slinky™ is used to demonstrate transverse and longitudinal waves, reflection, energy dissipation, interference, and plane polarization.
Quantum Chemistry
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Wave Diffraction, Interference, and Scattering
Diffraction, interference and scattering - properties common to all wave phenomena - are demonstrated with waves in a ripple tank.
Quantum Chemistry
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Circular Standing Waves in a Ripple Tank
Circular standing waves in a ripple tank are demonstrated.
Quantum Chemistry
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Waves in a Ripple Tank
Circular waves, linear waves, and waves from two point sources in a ripple tank are shown and described.
Quantum Chemistry
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Standing Waves on a Wave Demonstrator
The relationship between frequency and wavelength for standing waves on a 0.90 m short-rod wave demonstrator is explored.
Quantum Chemistry
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Interference in a Wave Demonstrator
Constructive and destructive interference are illustrated with a 0.90 m long-rod wave demonstrator.
Quantum Chemistry
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Waves in a Wave Demonstrator — Wave Speed, Reflection, and Interference
Wave speed, frequency, wavelength, and reflection are illustrated with a 0.90 m (long-rod, low wave speed) wave demonstrator.
Quantum Chemistry
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Standing Waves on a String - Separate Movies
The relationship between frequency and wavelength for standing waves on a stretched string is demonstrated in a series of separate movies.
Quantum Chemistry
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Standing Waves on a String
The relationship between frequency, wavelength, and energy absorption for waves on a stretched string is discussed.
Quantum Chemistry
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Unique Nodal Patterns at Resonant Frequencies - Square Plate
The development of nodal patterns on a square Chladni plate at resonant frequencies is shown. The wave driver is set at a resonant frequency and sand is scattered on the Chladni plate forming a resonance pattern characteristic of that frequency.
Quantum Chemistry
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Specific Frequencies - Round Plate
Unique nodal patterns at several resonant frequencies for a round plate are shown.
Quantum Chemistry
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Standing Waves on Chladni Plates
In these movies we demonstrate two dimensional standing waves on Chladni plates.
Quantum Chemistry
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Background Information for the Photoelectric Effect
This section provides background information about the apparatus used for the photoelectric effect demonstration.
Quantum Chemistry
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The Photoelectric Effect
The photoelectric effect is demonstrated.
Quantum Chemistry
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Light as a Particle: Photoelectric Effect
The discovery of the temperature dependence of the spectrum of an incandescent light source and the discovery of the photoelectric effect led to the characterization of the particle-like properties of light. Here we demonstrate these two phenomena.
Quantum Chemistry
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Light and Electrons
Some wave-like and particle-like properties of light and some wave-like and particle-like properties of electrons are shown.
Quantum Chemistry
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Neon Signs
Here are images of gas discharge lamps filled with the noble gases helium, neon, argon, krypton and xenon.
Quantum Chemistry
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Resonance Boxes
Conditions for energy transfer between resonance boxes are discussed.
Quantum Chemistry |
Transport Properties
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Sound Waves
Wave concepts such as standing waves, resonance and interference can be demonstrated using sound waves.
Transport Properties |
Quantum Chemistry
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Light as a Wave: Reflection, Diffraction, Polarization, and Absorption
The following demonstrations illustrate diffraction, scattering, and absorption of light.
Quantum Chemistry |
Physical Properties
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The Electron as a Particle: Crookes and Cathode Ray Tubes
The Crookes tube and various cathode ray tubes demonstrate the electron as particle.
Quantum Chemistry |
Applications of Chemistry
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Cloud Chamber
Charged radioactive particles produce condensation trails in a cloud chamber.
Nuclear / Radiochemistry |
Quantum Chemistry
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