Wave Particle Duality

Question 1

What are EM waves produced by?

Answer 1

oscillating electric charges

Question 1

What are EM waves?

Answer 1

-transverse waves
-consist of oscillating electric and magnetic fields that are perpendicular to each other
-at the same frequency

Question 2

Why does the permeability constant exist ?

Answer 2

due to the magnetic flux density produced as a result of a current-carrying conductor in free space

Question 3

What does the permittivity of free space relate too?

Answer 3

related to the electric field strength due to a charged object in free space

Question 4

What is the circuit diagram for Hertz’s radio waves experiment?
(radio waves experiment)

Answer 4

https://learnodo-newtonic.com/hertz-contribution

Question 5

How is the spark created in the detector?
(radio waves experiment)

Answer 5

-when switch is closed, the induction coil produces a high voltage across gap
-spark causes radio waves to be produced
-waves propagate through the air to the detector
-the EM waves induce a voltage in detector causing spark

Question 6

What is observed when a metal plate is placed between the transmitter and the detector?
(radio waves experiment)

Answer 6

-no spark
-because the plate prevented the waves from reaching the detector

Question 7

What happens when a concave metal plate is placed behind the detector?
(radio waves experiment)

Answer 7

-the detector spark became stronger because the radio waves were focused by plate back onto detector

Question 8

How did Hertz prove that the radio waves produced in his experiment were plane polarised?

Answer 8

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