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Does anyone know or direct me to a website that relates the interference observed in thin-film iridescense to the refractive indices of the materials (i.e. glass/air/glass)
Thin film iridescence/interference is a phenomenon that occurs when light waves reflect and interfere with each other on a thin film surface, resulting in a colorful and iridescent appearance.
Thin film iridescence/interference occurs when light waves reflect off of both the top and bottom surfaces of a thin film layer. These reflected waves then interfere with each other, causing certain wavelengths of light to reinforce each other and appear brighter, while other wavelengths cancel out and appear darker, resulting in a colorful and iridescent effect.
Thin film iridescence/interference can be observed in a variety of materials, including soap bubbles, oil slicks, and certain types of butterfly wings. It can also be artificially created in thin films of materials such as titanium dioxide, which is commonly used in pigments and coatings.
The thickness of the thin film layer, the angle of incident light, and the refractive index of the materials involved can all affect the appearance and intensity of thin film iridescence/interference. Other factors such as temperature and humidity can also play a role.
Thin film iridescence/interference has practical applications in a variety of industries, such as cosmetics, automotive, and electronics. For example, it is used in the production of holograms, anti-reflective coatings, and color-changing pigments. It is also a source of inspiration for artists and designers, who incorporate iridescent effects into their work.