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A concave circle
find the answer
The power of a lens is 1/focal length (measured in meters).
The focal length of a convex lens is easier to find than a concave lens because for a convex lens, the focal length is positive and is measured from the lens to the focal point. In contrast, for a concave lens, the focal length is negative and the rays of light are diverged. This makes it more challenging to find the focal point accurately.
There is no age limit, just as soon as you are responsible enough to keep them clean. ^_^
You can have your lens fixed at UnitedCamera.com. If they are not able to fix your lens the first time around, it's free. You can also find a replacement lens at UnitedCamera.com.
There are many places where one can look to find a lens rental company. One can look for a lens rental company at popular on the web sources such as Lawson Photo and Lens Pro To Go.
So far I can find only entire mirror assemblies...I only need the lens.
all you have to do is find a line with two endpoints on the circle also a diameter is the longest chord on a circle that runs through the middle of the circle.
The focus of a lens can be found by determining the distance at which parallel light rays converge after passing through the lens. One common method is to use a camera to focus on a distant object, then measure the distance between the lens and the image sensor or film plane to find the focal length of the lens.
Find the area of the circle and divide by 4.
You can find the Antarctic Circle in the Southern Hemisphere.