The idea of photography began thousands of years ago, and many theories contributed to the invention of photography. The ancients relied on their creative minds to try to understand the light and its nature. The Greek philosopher Aristotle said that light is the activity resulting from what is transparent. And that transparency is a fundamental property of various materials, and when activated by the sun or fire, resulting in light and color. In the fifth century BC, Impedocles, a Greek philosopher in the pre-Socrates period, assumed that everything consisted of four elements: fire, air, land, and water. He believed that Aphrodite, the god of love in Greek mythology, had made the human eye of these four elements, and that it had left the ...