How do you calculate the actual size of the bacterium?

Answer 1

Bacterium size is measured by a technique called Micrometry. With micrometry you can measured the size of very small beings like bacteria, cells, etc. This technique involves the use of a microscope in which the eye piece is calibrated in micrometers. A similarly calibrated slide is used for standardization. The specimen is then mounted and the size measured. Normally, the size of many cells are taken into account and an average value is taken, since all cells may not be of the same size.

Answer 2

To calculate the actual size of a bacterium, you need to measure the size of the bacterium in a microscope using a calibrated eyepiece or stage micrometer. Then, you can use the magnification of the microscope to convert the measured size into the actual size by dividing the measured size by the magnification used.