Soap Spacing and Slit Width

%% Soap Spacing and Slit Width
% Determines the minimum thickness of a film and the wavelength of a light

% Inputs and Variables
n1 = input('Index of soap\n');
lambda = input('Wavelength of dominantly colored light\n');

% Outputs and Equations
thickness_min = lambda/(4*n1);
lambda1 = 2*thickness_min*n1;
fprintf('Minimum thickness: %.3e m\nnew reflected wavelength: %.3e m\n', thickness_min, lambda1)