Histology (compound of the Greek words: á¼±ÏÏÏÏ histos tissue, and - Î»Î¿Î³Î¯Î± -logia science) is the study of the microscopic anatomy of cells and tissues of plants and animals.
Reflection in the x-axis. A reflection in the x-axis can be seen in the picture below in which A is reflected to its image A'. The general rule for a reflection in the x-axis: (A,B) (A, âB) Reflection in the y-axis. A reflection in the y-axis can be seen in the picture below in which A is reflected to its image A'.
When these rays strike a concave mirror, they are reflected so they go through a common point and then go on their way; this point is called the focal point. The distance from the mirror to the focal point F is called the focal length and is labeled f. The focal length f is positive for a concave mirror.