EM waves
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8 Terms
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What are EM waves?
transverse waves that transfer energy to objects
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What speed do all EM waves travel in a vacuum?
speed of light- 300m m/s
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EM waves
Radio
Microwave
IR
Visible light
UV
X-ray
Gamma
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What changes down the spectrum?
Increased frequency and energy
Decreased wavelength
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Why is there such a large range of frequencies?
generated by a range of changes in nucleus and atoms
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What are EM waves made of?
oscillating electric and magnetic fields
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What is ac made of?
oscillating charges
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How to generate ac using radio waves?
Use a transmitter to generate radio waves
This is absorbed by the receiver
Energy is transferred to electrons in the receiver
Electrons oscillate and generate ac if complete circuit
Note 
Flashcards (71)