Cover Test. While there are many ways for your eye doctor to check how your eyes work together, the cover test is the simplest and most common. During a cover test, your eye doctor will ask you to focus on a small object across the room and will then cover each of your eyes alternately while you stare at the target.
Hooke's Law states that the restoring force of a spring is directly proportional to a small displacement. In equation form, we write. F = -kx. where x is the size of the displacement.
Robert Hooke's microscope. Perhaps his most famous observations were in his study of thin slices of cork, describing the pores, or cells he viewed. Hooke had discovered plant cells, or more precisely, Hooke had been viewing the cell walls in cork tissue.n fact, it was Hooke who coined the term cells: the boxlike cells of cork reminded him of the cells of a monastery. Hooke also reported seeing similar structures in wood and in other plants. Hooke also famously described a fly's eye.