The discerning power of the eye
The term resolving power of an optical instrument, including the eye, means the ability to obtain two separate images from two different point sources.The eye sees two point objects separated if the image of each individual point falls on another cone. If the images...
The eye and physics
A normal eye sees clearly if it creates images on the retina. Since the distance of the retina from the entrance surface of the cornea is constant, it is necessary for the eye to increase its convergence (strength) the more the object it observes is closer. Thus, the...
What is polarization?
Polarization is a property of electromagnetic waves related to the direction of oscillation of the field. Linear or complete polarization is a polarization in which the electric field vector constantly oscillates in the same plane. When scattering, light is polarized...
Physics of the visual field
The eye creates images of objects from that part of space from which light can reach it.If the eye is at rest, that part of the space is called the visual field of the resting eye. The best visibility is in the area of the 30 arcmin aperture cone. Due to the high...
