good morning everyone....♥╣[-_-]╠♥( ˘ ³˘)♥. write a note on human eye....?
Answers
Answer:
1.The human eye acts like a camera.
2.The eye has a transparent diaphragm on the outer layer called as cornea. ...
3.The light then passes through a small opening called as pupil. ...
4.A thin crystalline lens then focuses the image on the retina.
Answer:
here is the answer...
Explanation:
The human eye is one of the most valueable and sensitive sense organs. it enable us to see the wonderful world and the colour around us. The human eye is like a camera . Its lens system forms an image on a light-sensitive screen called the retina. Light enters the eye through a thin membrane called the cornea.It formed the transparent bulge on the front surface of the eyeball. The eyeball is approximately spherical in shape with a diameter of about 2.3 cm. Most of the refraction for the light rays and bring the eyes occur at the outer surface of the cornea. The crystalline lens merely provide the finer adjustment of focal length required to focus object at different distances on the retina. Iris is a dark muscular Diaphragm that controls the size of the pupil. The pupil regulate and control the amount of light entering the eye. The eye lens forms an inverted real image of the object on the retina. The retina is a delicate membrane having enormous number of light-sensitive cells. The light-sensitive cells get activated upon illumination and generate electrical signals. These signals are assigned to sent the Brain via the optic nerves.
