What are Newton's rings?
The term "Newton's rings" refers to the phenomenon that occurs when a curved piece of glass, usually a convex lens, is in contact with a flat piece of glass. The curved glass sits on a flat glass and creates an ever -larger film between them along the length of the curve. When white light is directed to a curved glass, a number of concentric circles appear like the bull's eye. Sir Isaac Newton was the first to observe this phenomenon, and therefore concentric rings are referred to as Newton's rings. This phenomenon occurs due to the interference between the light reflected by two surfaces. In a practical application, lens manufacturers can be used to determine the quality of the lens Newton's rings. In a well -made lens, the rings should be uniform.
In the center of the rings, the largest ring that, which creates the whole circle, is dark. The remaining rings alternate between dark and light due to the nature of the interference that creates them. Light waves reflecting from two pieces of glass cause destructive and constructive intervention. In destructionI live with the highest point of one wave encounters the low point of the other and effectively cancels each other. The constructive intervention occurs when high or low light wool points are equal to each other.
Another characteristic of the phenomenon of Newton's ring is that the circles approaching the center are stronger than those on the edge of the circle. This is related to the curvature of the convex lens. As the lens becomes more distant from the flat glass below it, the rings are thinning and closer to each other.
Sir Isaac Newton first discussed the observation of these rings in 1675. He also described the phenomenon in his book 1705 "Optics". Originally the experiment of his Newton rings used glass that created a wedge -shaped space, but later the version of the experiment used a convex lens. Modern tools created to demonstrate this phenomenon also use a convex lens.
Although modern scientists believe that Newton's rings are caused by svWith the waves, Newton himself saw this phenomenon as the support of his theory that light consisted of particles. However, some of his discoveries and observations required to use theories that corresponded to the theory of waves. The observation of Newton's rings is only one of the many scientific theories of Newton; In fact, many believe that he has contributed to scientific knowledge greater than anyone else in history.