Electromagnetic Radiation
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.
H4-51: MODULATION - AM AND FM
Category: H4 Music
Purpose:
Demonstrate AM and FM signal modulation as an introduction to vibrato and tremolo.
L3-18: FOCUSING OF HEAT WAVES - OVERHEAD PROJECTOR
Category: L3 Curved Mirrors
Purpose:
Illustrate focusing of heat in a very dramatic way.
E2-49: PULSAR MODEL - RADIOWAVES
Category: E2 Astronomy
Purpose:
Show the changing field pattern from a rotating dipole.
K8-04: SPEED OF LIGHT
Category: K8 Electromagnetic Waves and Sources
Purpose:
Measure the speed of light
K2-63: DISPLACEMENT CURRENT MODEL
Category: K2 Electromagnetic Induction
Purpose:
Illustrate the geometry for displacement current
I2-12: RADIATION FROM COLD OBJECT
Category: I2 Transfer of Heat
Purpose:
Show radiation from a cold object
K8-42: RADIOWAVES - ENERGY AND DIPOLE PATTERN
Category: K8 Electromagnetic Waves and Sources
Purpose:
Demonstrates transmission of energy in electromagnetic waves. Shows the radiation pattern of the dipole antenna
K8-45 RADIO WAVES FROM SPARK
Category: K8 Electromagnetic Waves and Sources
Purpose:
Demonstrates that a spark contains radio waves
K8-03 LIGHT NANOSECOND
Category: K8 Electromagnetic Waves and Sources
Purpose:
Shows the distance light travels in one nanosecond
K8-01 ELECTROMAGNETIC WAVE - MODEL
Category: K8 Electromagnetic Waves and Sources
Purpose:
Shows the relationship between the electric and magnetic field vectors in a plane-polarized traveling electromagnetic wave
J3-23 FARADAY CAGE - RADIOWAVES
Category: J3 Electric Fields and Potential
Purpose:
Demonstrates that radio waves cannot penetrate a Faraday cage
I2-08 RADIATIVE HEAT TRANSFER
Category: I2 Transfer of Heat
Purpose:
Shows radiation from a hot object
I2-06 THERMOPILE WITH AUDIO OSCILLATOR
Category: I2 Transfer of Heat
Purpose:
Observe infrared radiation
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J3-01: EXISTENCE OF ELECTRIC FIELDS
Demonstrate the existence of electric fields and to map them semi-quantitatively Read More
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J3-02: ELECTRIC FIELD OF RING OF CHARGE - MODEL
Aid in the visualization of the electric field of a ring of charge Read More
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J3-04: ELECTRIC FIELD LINES - SOAP BUBBLES
Show the shape of electric field lines for a large dipole by observing soap bubbles move along the lines Read More
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J3-05: VAN DE GRAAFF - INDUCTION WITH SPHERES AND NEON BULB
Demonstrate the existence of electric fields and to identify the polarity of the charge on a sphere Read More
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J3-06 ELLIPSOIDAL CONDUCTOR
Demonstrates that charge distribution on a conductor depends on the surface curvature Read More
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J3-07: VAN DE GRAAFF - DISCHARGE TO VARIOUS RADII
Demonstrate that for a charged conductor a smaller radius produces a higher electric field Read More
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J3-08 VAN DE GRAAFFS - INTERACTING FIELDS
Shows field lines for two identical charges Read More
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J3-11: EQUIPOTENTIALS/LINES OF FORCE - ONE CHARGE
Aid in visualization of equipotentials and lines of force Read More
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J3-13 POTENTIAL SURFACE MODEL WITH E FIELD VECTORS
Illustrates the relationship between the electrostatic potential and the electric field Read More
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J3-14 FLUX MODEL - ELECTROSTATICS
Aid in visualizing flux at an angle through a surface Read More
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J3-21 FARADAY CAGE
Demonstrates that the electric field within a closed conducting surface is zero Read More
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J3-22: FARADAY CAGE - ELECTROSCOPE
Demonstrate that the electric field within a closed surface is zero Read More
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J3-23 FARADAY CAGE - RADIOWAVES
Demonstrates that radio waves cannot penetrate a Faraday cage Read More
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J3-24 HOLLOW CONDUCTING SPHERE
Demonstrates that charge resides on the outside surface of a conductor Read More
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