The human eye is a wonderful instrument, relying on refraction and lenses to form images. There are many similarities between the human eye and a camera, including:
a diaphragm to control the amount of light that gets through to the lens. This is the shutter in a camera, and the pupil, at the center of the iris, in the human eye.
a lens to focus the light and create an image. The image is real and inverted.
a method of sensing the image. In a camera, film is used to record the image; in the eye, the image is focused on the retina, and a system of rods and cones is the front end of an image-processing system that converts the image to electrical impulses and sends the information along the optic nerve to the brain.
The way the eye focuses light is interesting, because most of the refraction that takes place is not done by the lens itself, but by the aqueous humor, a liquid on top of the lens. Light is refracted when it comes into the eye by this liquid, refracted a little more by the lens, and then a bit more by the vitreous humor, the jelly-like substance that fills the space between the lens and the retina.
The lens is critical in forming a sharp image, however; this is one of the most amazing features of the human eye, that it can adjust so quickly when focusing objects at different distances.
In chapters 3 and 4, education is shown as the most powerful weapon to do good and evil, and the "hunger to learn" is developed through the need to stay safe.
<h3>What does education represent in "Animal Farm?"</h3>
- The Liberty.
- The power.
- The control.
- The leadership.
- The security.
- The comfort.
Education allows animals to have a developed intellect and to be able to use it for their own benefit. In this concept, the pigs, in "Animal Farm," represent those who had more access to education, had a developed intellect and achieved control of all animals.
Horses, which are the least educated animals, are exploited and deceived by pigs, which shows that lack of education oppresses, imprisons, and limits individuals.
More information about "Animal Farm" at the link:
brainly.com/question/10225473
<span>Metacommunication is communication about communication.
A. TRUE</span>
