Why Optical Microscopes Have the Highest Resolution When Using Oil Objectives
Oil lens, one of the optical microscopes, when used, the lens is immersed in oil (usually cedar oil), used to observe finer structures, it is one of the microscopes commonly used in laboratories, and its clarity is slightly higher than that of ordinary optical microscopes, used for Observe chlamydia, bacteria, organelles, etc.
The lens of the oil lens is very small. When the light passes through the air between the glass slide and the oil lens, refraction or total reflection occurs due to the different density of the medium, so that the light entering the lens is reduced and the object image is not clear. If the oil lens and the carrier Adding cedar oil (n=1.515) which is similar to the refractive index of glass (n=1.52) between the glass slides will increase the light entering the lens, enhance the brightness of the field of view, and make the object image bright and clear
Due to the small size of bacteria, in the morphological study of bacteria, it is often necessary to use a microscope oil lens to observe clearly. Therefore, it is necessary to be proficient in the use and protection of the oil lens
