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
-
I2-01: CROOKES' RADIOMETER
Stimulate discussion about radiative heat transfer and conservation of momentum with photons. Read More
-
I2-03: CROOKE'S RADIOMETER - ROTATION REVERSAL
Counterintuitive demonstration of Crookes' radiometer designed to make students understand radiation better. Read More
-
I2-04 WIEN'S LAW OF THERMAL RADIATION
Shows that higher temperature blackbodies radiate with shorter wavelengths
Read More
-
I2-05: LESLIE'S CUBE
Illustrate radiation from various surfaces. Read More
-
I2-06 THERMOPILE WITH AUDIO OSCILLATOR
Observe infrared radiation
Read More
-
I2-07: THERMOPILE WITH DVM
Observe infrared radiation. Read More
-
I2-08 RADIATIVE HEAT TRANSFER
Shows radiation from a hot object
Read More
-
I2-09 DEWAR - TRANSPARENT WITH LIQUID NITROGEN
Demonstrates a dewar
Read More
-
I2-10: DEWARS - SILVERED AND UNSILVERED
Illustrate the function of silvering a dewar Read More
-
I2-11: THERMOS BOTTLE
Show the parts of a standard thermos bottle. Read More
-
I2-12: RADIATION FROM COLD OBJECT
Show radiation from a cold object Read More
-
I2-21 THERMAL CONDUCTIVITY IN METALS
Demonstrates thermal conductivity in various metals
Read More
-
I2-22 THERMODYNAMICS BY TOUCH
Demonstrates that touching a material tells something about its conductivity, not necessarily its temperature
Read More
-
I2-24: THERMAL CONDUCTIVITY IN WATER
Demonstrate that water is a poor conductor of heat. Read More
-
I2-26: LEIDENFROST PHENOMENON
Demonstrate the Leidenfrost effect. Read More
-
I2-27: THERMAL EQUILIBRIUM BETWEEN ALUMINUM AND COPPER
Show process of thermal equilibrium happening between touching aluminum and copper cylinders. Read More
-
I2-28: WATER BALLOON AND CANDLE
Show transfer of heat in water Read More
-
I2-29: Thermal Conductivity - Metal Bars and Liquid Crystals
Show conduction of heat in metals Read More
-
I2-41: CONVECTION - POWDER IN WATER
Illustrate convection. Read More
-
I2-42: FALLING CANDLE
Demonstrate how a flame burns in the absence of normal convection. Read More
-
I2-43: CONVECTION - HOT PLATE
See convection currents. Read More
-
I2-44: CONVECTION - CANDLE IN CYLINDER
Demonstrate the mechanism of convection. Read More
-
I2-45: CONVECTION - HIGH/LOW CANDLES IN CYLINDER
Brainteaser regarding convection. Read More
- 1