Resistance
K6-52: IMPEDANCE MATCHING - BATTERY AND JOULEMETER
Category: K6 Electric Circuits and Instruments
Purpose:
Demonstrate that the power transmission is maximized when the source impedance and the load impedance are equal.
K6-35: VOLTAGE DIVIDER
Category: K6 Electric Circuits and Instruments
Purpose:
Show how a voltage divider can be used to produce any voltage up to the maximum of the source.
K6-33: WHEATSTONE BRIDGE
Category: K6 Electric Circuits and Instruments
Purpose:
Demonstrate operation of a Wheatstone bridge.
K6-32: POTENTIOMETER
Category: K6 Electric Circuits and Instruments
Purpose:
Find an unknown EMF using a voltage divider.
K6-22: ENERGY CONVERSION - IMMERSION HEATER
Category: K6 Electric Circuits and Instruments
Purpose:
Demonstrate quantitatively the conversion of electrical energy into heat.
K6-21: HEATING IN CURRENT-CARRYING WIRE
Category: K6 Electric Circuits and Instruments
Purpose:
Show the conversion of electrical energy into heat.
K5-45: SEMICONDUCTOR MODEL
Category: K5 Electrical Properties of Matter
Purpose:
Model of semiconductor.
K5-44: NON-OHMIC DEVICE - LIGHT BULB
Category: K5 Electrical Properties of Matter
Purpose:
Show the change in resistance of a light bulb with temperature.
K5-41: V-I CURVES FOR OHMIC AND NON-OHMIC DEVICES
Category: K5 Electrical Properties of Matter
Purpose:
Illustrate resistive properties of resistors and diodes.
K5-34: THERMAL COEFFICIENT OF RESISTANCE IN COPPER
Category: K5 Electrical Properties of Matter
Purpose:
Show that the resistance of copper changes linearly with temperature.
K5-36: RESISTORS AT LN TEMPERATURE - LIGHT BULB INDICATOR
Category: K5 Electrical Properties of Matter
Purpose:
Demonstrate materials with both positive and negative temperature coefficients of resistance.
K5-32: RESISTANCE VS DIAMETER AND LENGTH
Category: K5 Electrical Properties of Matter
Purpose:
Determine how resistance varies as a function of diameter and length for the same material.
K5-35: RESISTORS AT LN TEMPERATURE
Category: K5 Electrical Properties of Matter
Purpose:
Illustrate materials with both positive and negative temperature coefficients of resistivity.
K5-13: ELECTRIC CURRENT - MODEL
Category: K5 Electrical Properties of Matter
Purpose:
Indicate how electrons really flow through a conductor.
I7-21: SUPERCONDUCTOR - MAGNET LEVITATION
Purpose:
Demonstrate levitation of a magnet above a high-temperature superconductor
K5-43: NON-OHMIC DEVICE - V VS. I
Category: K5 Electrical Properties of Matter
Purpose:
Demonstrates the non-linearity of the V vs I curve for a diode
K5-33 CONDUCTIVITY OF SALT SOLUTION
Category: K5 Electrical Properties of Matter
Purpose:
Shows that pure water is not conducting, but a solution of an electrolyte is conducting
K5-31 OHM'S LAW
Category: K5 Electrical Properties of Matter
Purpose:
Demonstrates relationship between current, voltage, and resistance
K4-07 BICYCLE GENERATOR
Category: K4 Motors and Generators
Purpose:
Demonstrates a 110 VAC magnetoelectric generator, and the relationship of work to power output
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I7-01: CRYSTAL MODELS - SET OF 2
Set of two simple crystal models. Read More
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I7-02: CRYSTAL MODELS - BRAVAIS SET OF 14
Models of crystals
Read More
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I7-03: CRYSTAL MODELS - BRAVAIS SUPPLEMENTAL SET OF 16
Models of crystals Read More
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I7-04: CRYSTAL MODELS - CALCITE
Model a calcite crystal with a sample of the real thing
Read More
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I7-05: CRYSTAL MODELS - LARGE
Large models of crystals. Read More
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I7-06: CRYSTAL MODELS - LARGE UNIVERSAL
Set of components to form a large number of crystal types. Read More
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I7-07: CLOSE-PACKED CRYSTALLITE
Display the low index surfaces of close-packed crystals
Read More
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I7-08: CRYSTAL MODEL WITH FAULTS
Visualization of a crystal fault within a simple crystal structure. Read More
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I7-09: Spontaneous Ordering - Crystal Formation Models
Illustrates small objects ordering themselves upon agitation.
Read More
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I7-11: FERMI SURFACE OF ALUMINUM
Illustrate the Fermi surface of aluminum. Read More
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I7-21: SUPERCONDUCTOR - MAGNET LEVITATION
Demonstrate levitation of a magnet above a high-temperature superconductor
Read More
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I7-22: Phonon Propagation - Simple 1D Model
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I7-31: FILLED CONDUCTION BANDS
Demonstrate that filled bands and empty bands are non-conductive; only partially filled bands are active. Read More
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