Coating on a Lens to Minimize Reflection

%% Coating on a Lens to Minimize Reflection
% Determines the minimum thickness of coating which should be placed on a
% lens in order to minimize the reflection of a wavelength

% Inputs and Variables
lambda = input('Wavelength\n');
n1 = input('Index of refraction of the coating material\n');

% Outputs and Equations
thickness = lambda/(4*n1);
fprintf('The minimum thickness is: %.4e m\n', thickness)