An electromagnetic wave falls from the air onto a plexiglass plate at an angle of 60 degrees. Find the angle of refraction.
| November 27, 2020 | education
An electromagnetic wave falls from the air onto a plexiglass plate at an angle of 60 degrees. Find the angle of refraction. The dielectric constant of plexiglass is 4.
Decision:
n = √ ε = 2;
Sina / sinb = 2;
Sine 60 ° = √ 3/2
Sinb = sina / 2 = √3 / 4 = 0.433;
According to the Bradis table, we determine that the angle b = 25.6 °.
Answer: 25.6 °.
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