Search results
Results from the WOW.Com Content Network
To generate interference fringes, light from the source has to be divided into two waves which then have to be re-combined. Traditionally, interferometers have been classified as either amplitude-division or wavefront-division systems.
This diffraction pattern is also seen in the double-slit image, but with many smaller interference fringes. If light consisted strictly of ordinary or classical particles, and these particles were fired in a straight line through a slit and allowed to strike a screen on the other side, we would expect to see a pattern corresponding to the size ...
Thin-film interference caused by water-lipid boundaryThin-film interference is a natural phenomenon in which light waves reflected by the upper and lower boundaries of a thin film interfere with one another, increasing reflection at some wavelengths and decreasing it at others.
The fringes can be interpreted as the result of interference between light coming from the two virtual images S ′ 1 and S ′ 2 of the original source S. The characteristics of the interference pattern depend on the nature of the light source and the precise orientation of the mirrors and beam splitter.
The fringes can be interpreted as the result of interference between light coming from the two virtual images S' 1 and S' 2 of the original source S. The characteristics of the interference pattern depend on the nature of the light source and the precise orientation of the mirrors and beam splitter.
The angular spacing of the fringes, θ f, is then given by / where θ f <<1, and λ is the wavelength of the light. It can be seen that the spacing of the fringes depends on the wavelength, the separation of the holes, and the distance between the slits and the observation plane, as noted by Young.
Yellow areas produce bright lines of constructive interference. The dark areas produce dark lines of destructive interference. In interferometry experiments such as the Michelson–Morley experiment, a fringe shift is the behavior of a pattern of “fringes” when the phase relationship between the component sources change.
For example, the wavelength of red light is about 700 nm, so using red light the difference in height between two fringes is half that, or 350 nm, about 1 ⁄ 100 the diameter of a human hair. Since the gap between the glasses increases radially from the center, the interference fringes form concentric rings.