Explore the fascinating phenomenon of thin film interference in this comprehensive physics lesson. Delve into the principles behind constructive and destructive interference when light reflects off thin liquid films between different mediums. Learn how film thickness and light wavelength influence the visibility of certain colors in reflected rays. Master the equations for both constructive and destructive interference conditions, considering the impact of light inversion when moving between mediums with different refractive indices. Understand the crucial distinction between scenarios with and without relative phase shifts between reflected rays, and apply your knowledge to solve a practical thin film interference problem. Enhance your understanding of optics and wave behavior through this in-depth exploration of a captivating physics concept.