Ford produced Model Ts in this manner for three years at its new Highland Park plant before adopting the assembly line. When modern drivers think about the Ford Model Tâif they think about it at allâthey perhaps dimly perceive it as the car that changed the world.
The Cornea. The cornea represents the strongest part of the refracting power of the eye, providing about 80% of the power of the system. The index of refraction of the cornea is about 1.376. Rays pass from the cornea into the watery fluid known as the aqueous humor which has an index of refraction of about 1.336, so most of the refraction is at the cornea-air interface.
You should be able to label and describe the functions of the main parts of the eye. Component parts of the eye. Part. Description. Function. Cornea. Tough, transparent covering over the front part of the eye. Convex in shape. Refracts light as it enters the eye (by a fixed amount).Iris. Coloured part of the eye that contains muscles. These relax or contract to adjust the size of the pupil.djust the shape of the lens to make it more or less curved, so as to increase or decrease the refraction of light. Suspensory ligaments. Connect the ciliary muscles to the lens and hold the lens in place. Slacken or stretch as the ciliary muscles contract or relax, to adjust the thickness and curvature of the lens.