Needs New Photo
K1-11: CATHODE RAY TUBE - DEFLECTION BY CURRENT
Category: K1 Forces on Moving Particles
Purpose:
Demonstrate visually the force between two parallel currents.
K1-04: FORCE ON CURRENT IN MAGNETIC FIELD - PORTABLE
Category: K1 Forces on Moving Particles
Purpose:
Demonstrate the force on a current-carrying wire in a magnetic field.
H6-01: FOURIER ANALYSIS OF VOICE
Category: H6 The Voice
Purpose:
Determine the Fourier spectrum of various steady-state spoken and sung vocal (vowel) sounds.
H4-55: YAMAHA DX7S DIGITAL SYNTHESIZER
Category: H4 Music
Purpose:
Demonstrate features of a modern digital synthesizer.
H4-52: SPECTRUM ANALYSIS OF MODULATION
Category: H4 Music
Purpose:
Compare and analyze the frequency spectra of various modulated sounds such as tremolo, vibrato, and beats.
J1-02: TRIBOELECTRICITY - WATER JET IN AIR
Category: J1 Electrostatic Charge and Force
Purpose:
Illustrate triboelectricity.
H5-31: DIPLACUSIS AND BINAURAL BEATS
Category: H5 The Ear
Purpose:
Demonstrate individually the phenomena of binaural beats and diplacusis.
H5-19: SUM AND DIFFERENCE TONES
Category: H5 The Ear
Purpose:
Quantitatively demonstrate sum and difference tones.
H5-17: WAVETEKS AND AUDIO CART - QUALITY BEATS
Category: H5 The Ear
Purpose:
Demonstrate second order or quality beats.
H5-15: EFFECT OF HARMONIC CONTENT ON TONE QUALITY
Category: H5 The Ear
Purpose:
Illustrate Ohm's Law of Hearing, and to hear the sounds of complex waves produced by the Fourier Synthesizer.
H5-12: WAVETEKS AND AUDIO CART - CRITICAL BAND
Category: H5 The Ear
Purpose:
Demonstrate the effect of the critical band on the sound of two simultaneous sine waves.
H5-11: WAVETEK AND AUDIOCART - FREQUENCY RANGE OF HEARING
Category: H5 The Ear
Purpose:
Demonstrate the approximate frequency range of human hearing.
L6-42: DISTORTION AND CORRECTION
Category: L6 Lenses
Purpose:
Illustrate pincushion and barrel distortion and correction thereof.
L6-35: CHROMATIC ABERRATION - POINT SOURCE AND 20 CM LENS
Category: L6 Lenses
Purpose:
Show the effect of chromatic aberration in a lens.
L6-14: IMAGE OF CONVEX LENS - WITH AND WITHOUT BAFFLE
Category: L6 Lenses
Purpose:
Encourage thought regarding how an image is formed.
L6-08: REAL IMAGE OF CONVERGING LENS - LIGHT BULB
Category: L6 Lenses
Purpose:
Show the real image of a converging lens.
L6-07: MICROWAVES - LENS
Category: L6 Lenses
Purpose:
Demonstrate that a paraffin lens can focus microwaves.
H1-44: ULTRASONIC MOTION DETECTOR WAVE FORM
Category: H1 Nature of Sound
Purpose:
Show the wave form of the ultrasonic signal created by the ultrasonic motion detector.
H1-31: SOUND LEVEL METER
Category: H1 Nature of Sound
Purpose:
Demonstrate use of a sound level meter.
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K5-01: PIEZOELECTRICITY
Demonstration of a piezoelectric crystal Read More
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K5-02: PIEZOELECTRIC CRYSTAL - AUDIBLE
Demonstrate that a piezoelectric crystal converts electrical impulses into physical vibrations Read More
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K5-03: PIEZOELECTRIC IGNITOR
Show a commercial use for piezoelectricity Read More
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K5-04: PIEZOELECTRIC GUN
Application of piezoelectricity to produce copious quantities of electric charge Read More
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K5-11: BATTERY MODEL
Simple model of a battery using a human as the source of energy Read More
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K5-12 BATTERY AND CURRENT - WORKING MODEL
Model of battery with circuit attached
Read More
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K5-13: ELECTRIC CURRENT - MODEL
Indicate how electrons really flow through a conductor Read More
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K5-14: ELECTRIC CELL
Demonstrate how an electric cell is formed Read More
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K5-16: CARRIER CURRENT DENSITY MODEL
Model the density of carriers crossing a plane Read More
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K5-21: AC PLUG CIRCUIT CHECKER
Check the wiring of 110VAC power sockets Read More
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K5-22: AC PLUG CIRCUIT CHECKER CHECKER
Demonstrate each different kind of wiring error Read More
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K5-23: ROTATING TWO-COLOR LED
Demonstrate that what comes out of a 110 VAC plug is in fact alternating current Read More
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K5-31 OHM'S LAW
Demonstrates relationship between current, voltage, and resistance Read More
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K5-32: RESISTANCE VS DIAMETER AND LENGTH
Determine how resistance varies as a function of diameter and length for the same material Read More
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K5-33 CONDUCTIVITY OF SALT SOLUTION
Shows that pure water is not conducting, but a solution of an electrolyte is conducting
Read More
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K5-34: THERMAL COEFFICIENT OF RESISTANCE IN COPPER
Show that the resistance of copper changes linearly with temperature Read More
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K5-35: RESISTORS AT LN TEMPERATURE
Illustrate materials with both positive and negative temperature coefficients of resistivity Read More
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K5-36: RESISTORS AT LN TEMPERATURE - LIGHT BULB INDICATOR
Demonstrate materials with both positive and negative temperature coefficients of resistance Read More
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K5-41: V-I CURVES FOR OHMIC AND NON-OHMIC DEVICES
Illustrate resistive properties of resistors and diodes Read More
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K5-42: TRANSISTOR
Demonstrate a transistor circuit Read More
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K5-43: NON-OHMIC DEVICE - V VS. I
Demonstrates the non-linearity of the V vs I curve for a diode
Read More
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K5-44: NON-OHMIC DEVICE - LIGHT BULB
Show the change in resistance of a light bulb with temperature Read More
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K5-45: SEMICONDUCTOR MODEL
Model of semiconductor Read More
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