How Does Magnification Work and How Is It Calculated?
What is magnification? Magnification is the point at which an object is made to seem bigger
than it really is, or, a far off object is made to show up nearer than it truly is. The last option is
much of the time achieved utilizing a telescope; adjustable magnification is utilized while
concentrating on stars and planets in space. Accordingly, the magnification definition can cover
two totally various ideas.
Magnification is achieved by using one or more lenses that are convex in nature. As light rays
pass through the lens, the parallel light rays bend and converge on the object in focus creating a
larger image of the object on the human retina. There are different types of lenses, including
simple lenses and compound lenses.
An A magnifying glass is an example of a simple lens, since there is only one lens in the glass.
These simple lenses can make objects appear up to 6 times larger than they actually are.
Another type of simple lens, called the Coddington lens, was created in the 1700s and can
magnify objects up to 15 times due to the thickness of the glass as well as the steep central
groove bending the light rays.
A compound lens has two lenses that light passes through - for example, a compound
microscope that uses two lenses to amplify an image. Another example of a compound lens is
called a loupe, which is used by jewelers to assess the clarity of diamonds. Since these are only
used on one eye, they are called monocular loupes. Binocular loupes are used by dentists when
viewing teeth.
Magnification cannot occur by bringing an image closer to the eye; rather, the refraction of light
through a lens must be used for true magnification.
Magnification Equation
There are two conditions that assist with portraying how to track down magnification. These
conditions are: the focal point condition and the magnification condition.
The lens equation is: 1/f =1/Do+1/Di where
f is the focal length of the lens
Do is the distance from the object to the lens
Di is the distance from the lens to the in-focus projected image
