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.
The innermost layer of the wall of the eye is made up of the retina (also called the neural tunic). The retina has a layer of cells that absorb light that make up the pigmented layer. The retina also has a layer of nerve cells (neurons) that make up the neural retina. Some of the neurons of the neural retina are specialized cells called photoreceptors. There are 2 types of photoreceptors â rods and cones.