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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