How Are Photographs Taken?
A camera takes photographs. The term “camera” derives from the Latin phrase “camera obscura,” which means “dark room.” As inventors worked out how to…
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Lens
What Are Our Eyes Made Of?
What Are Our Eyes Made Of? The outer shell of the eyeball is made up of three coats: the fibrous tunic, composes of the cornea and sclera. T
Who Was Antonie Philips Van Leeuwenhoek?
Who Was Antonie Philips Van Leeuwenhoek? Antonie Philips van Leeuwenhoek (1632-1723) was a Dutch scientist whose experiments with microscope
How Many Eyes Does a Spider Have?
How Many Eyes Does a Spider Have? Most spiders have eight simple eyes. The two main eyes of a spider each have a simple lens, and a retina w
How Did the Spectacles Originate?
How Did the Spectacles Originate? Around 1000 A.D., the first vision aid was invented, called a reading stone, which was a glass sphere that