# Why do Newton Rings Form in Circular Patterns?

• FizixFreak

#### FizixFreak

why are Newton rings observed in a circuler pattern?

lol, I thought you are trying to advertise ringtones for mobiles.

I think it is a simple geometry - think about distances covered by different rays before they interfere.

FizixFreak said:
why are Newton rings observed in a circuler pattern?
Consider how those patterns are typically produced--by putting a convex piece of glass over a flat plate. The curved surface has a spherical symmetry that leads to circular rings.

http://www.citycollegiate.com/Newtons_rings.htm" [Broken]

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## 1. What are Newton Rings?

Newton Rings are a phenomenon of interference fringes that occur when a convex lens is placed on a flat glass surface. They are named after Sir Isaac Newton, who first observed them in the 1700s.

## 2. Why do Newton Rings form in circular patterns?

Newton Rings form in circular patterns because of the way light is reflected and transmitted through the convex lens and the flat glass surface. This creates a series of concentric circles of light and dark fringes due to the interference of light waves.

## 3. What causes the formation of Newton Rings?

The formation of Newton Rings is caused by the interaction of light waves when they pass through a thin air gap between the convex lens and the flat glass surface. This creates a difference in the path length of the light waves, resulting in constructive and destructive interference patterns.

## 4. Can Newton Rings be seen in other situations besides a convex lens on a flat glass surface?

Yes, Newton Rings can also be seen in other situations where there is a thin air gap between two transparent surfaces, such as between two microscope slides or two soap bubbles. They can also be observed in anti-reflection coatings on lenses or in thin films of oil on water.

## 5. Are Newton Rings harmful or beneficial in any way?

Newton Rings are neither harmful nor beneficial. They are simply a visual demonstration of the wave nature of light and can be used to study the properties of light and interference. In some cases, they can also be used as a tool for measuring the thickness of thin films or coatings.