Lesson 4.6 - Production of Electromagnetic Radiation
VIDEO LESSON (39:41 min)
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Light is an EM wave.. So are radio waves, and microwaves and gamma rays. They are all parts of the electromagnetic spectrum.
Take a charge and have it oscillate up and down and a changing electric field will generate a propagating EM wave.
The faster the charge oscillates the higher the frequency of EM radiation produced.
Video is not accessible in some countries. If you cannot view it, you might need VPN to do so.
Light is an EM wave.. So are radio waves, and microwaves and gamma rays. They are all parts of the electromagnetic spectrum.
PRODUCING EM RADIATION
Recall Maxwell's Equations tells us that we can produce propagating EM fields from changing electric and magnetic fields.Take a charge and have it oscillate up and down and a changing electric field will generate a propagating EM wave.
The faster the charge oscillates the higher the frequency of EM radiation produced.
PRODUCING RADIO WAVES
RECEIVING RADIO WAVES
PRODUCING MICROWAVES
PRODUCING INFRARED RADIATION
PRODUCING INFRARED RADIATION
Infrared radiation is also produced through rotational and vibrational modes in molecules. Different molecules have different resonances due to absorption of wavelengths of light at these resonant frequencies.
PRODUCING VISIBLE LIGHT
PRODUCING X-RAYS
PRODUCING GAMMA RAYS
EXAMPLE DECAY CHAIN
SUMMARY
Last modified: Monday, 23 June 2025, 11:51 PM