Nearsightedness eye

Definition of the nearsightedness eye Nearsightedness or hyperopia is an optical eye abnormality in which the eye cannot see the near point or the near point looks blurred. The average normal-eyed human has a near point of 25 cm....

Farsightedness eye

Definition of the farsightedness eye Nearsightedness or hyperopia is an optical eye abnormality in which the eye cannot see a near point clearly, or the near point looks blurred. Although it is difficult to observe a near point, people...

Optical instrument human eye

Parts of the eye The cornea is a transparent hard membrane covering the front of the eye. The cornea refracts the beam of light entering the eye. The pupil is black parts of the eye. The pupil is black...

Properties of image formed by converging lens

The object distance is smaller than the focal length of the convex lens (do < f) Based on the calculation of the image formation by the convex lens, it can be concluded that the object distance (do) is smaller...

Equation of converging (convex) lens

Before learning the equation of the convex lens, understand the sign rules of the convex lens below. Sign rules of the convex lens – The object distance (do) If an object is passed through a beam of light, then...

Image formation by converging (convex) lens

To understand the image formation by the convex lens, learn example problems and solution below. In this case, the object is assumed to be at a certain distance from the convex lens, then draw the image formation by the...

Ray diagrams for converging (convex) lens

If an object is on one side of the convex lens, the convex lens can form the image of the object. If the position of the object on one side of the convex lens is known, how to draw...

Converging (convex) lens

Definition of the convex lens One type of lens used in everyday life is the convex lens. The convex lens is a lens with a thicker middle while the edges are thinner. Convex lenses are usually circular and made...

Properties of image formed by diverging lens

The object distance is smaller than the focal length of the concave lens (do > f) Based on the calculation of the image formation by the concave lens, can be concluded that if the object distance (do) is smaller...

Equation of diverging (concave) lens

Before deriving the equation of the concave lens, first understood the sign rules of the concave lens. Sign rules of the concave lens The following are the sign rules of the concave lens. – The object distance (do) If...