We wish to coat flat glass (n = 1.50) with a transparent material (n = 1.20) so that reflection of light at wavelength 529
3 answers
Question:
We wish to coat flat glass (n = 1.50) with a transparent material (n = 1.20) so that reflection of light at wavelength 529 nm is eliminated by interference. what minimum thickness can the coating have to do this?
Answers
For full destruction of the wavelength,
2t = y/2
t = thickness of the coating material
y = wavelength in the coating material
But;
y = y_a/n; where y_a is wavelength in air
Substituting;
y = 529/1.2 = 440.83 nm
Then,
t = y/4 = 440.83.4 = 110.21 nm
Therefore, thickness of the coating material should be 110.21 nm.
i think if it were me i whould divide 300 dide 15
step-by-step explanation:
compass can be used day and night, cloudy or sunny
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