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.
In 1663 an English scientist, Robert Hooke, discovered cells in a piece of cork, which he examined under his primitive microscope.Actually, Hooke only observed cell walls because cork cells are dead and without cytoplasmic contents. Hooke drew the cells he saw and also coined the word CELL.The word cell is derived from the Latin word 'cellula' which means small compartment. Hooke published his findings in his famous work, Micrographia: Physiological Descriptions of Minute Bodies made by Magnifying Glasses (1665).n 1663 an English scientist, Robert Hooke, discovered cells in a piece of cork, which he examined under his primitive microscope.