In the figure below, four particles form a square. The charges are q1 = +Q, q2 = q3 = q, and q4 = -5.25Q. What is q/Q if the net electrostatic force on particle 1 is zero?
The Attempt at a Solution
I first drew a free...
So I think if i get this right, the equation for the maxima is 2L/\lambda=m? Its like the reverse of a bubble in air? It's only going to have a phase shift due to reflection once not twice. The air gap acts as the thin film. It just has a lower index of refraction than everything around it...
The biggest thing to consider is whether there is a phase shift due to reflection off the bottom piece of glass right? Because that's going to decide whether the equations for the maxima and minima are 2L/\lambda=m or 2L/ \lambda =m+.5?
The figure below shows a lens with radius of curvature R lying on a flat glass plate and illuminated from above by light with wavelength λ. This photo, taken from above the lens, shows that circular interference fringes (called "Newton's rings") appear, associated with the...