Biological microscopes are usually used in a science or biology lab to study microscopic organisms and what they do. These microscopes range from a wide variety of types, such as the brightfield and darkfield microscopes. Well, what can all these biological microscopes do? In a professional environment, they are usually used to examine samples of microscopic organisms from ponds, household surface, or any object that contains any microscopic organisms. These biological microscopes, known as brightfield and darkfield microscopes, are simple and they are usually used in classrooms and simple study sessions to examine organisms. The maximum magnification of these microscopes can reach about 2000 x. Brightfield microscopes show a bright white background when the specimen is being examined, and obviously, the darkfield microscope shows a dark or black background when the specimen is being examined. Both microscopes count as compound light microscopes and they are able to be fitted with a binocular eyepiece. This means that the specimen can be viewed with both eyes. Another binocular biological microscope is the phase-contrast microscope.
This microscope is magnificent because it is especially capable of viewing live specimens, but it can only magnify up to 1500 x. It views specimens by emphasizing the slight differences in the organism’s ability to change the direction of light (this is also called bending light). The images that are created can only be viewed as a photo or through a computer monitor. The strongest biological microscopes must be either the transmission electron microscope (TEM) or the scanning electron microscope (SEM). The TEM is capable of aiming a beam of electrons at the specimen. This shows the denser and shallower locations of the specimen. This is possible because denser areas will let fewer electrons to pass through; therefore, it will look darker. Like the phase-contrast microscope, this biological microscope can only display specimens on a photograph or a computer monitor, but it can magnify up to hundreds of thousands of times. The SEM is different than the TEM, and it is a unique biological microscope. It has the ability to display three-dimensional images of the microscopic organism that it scans. How this is possible is due to the microscope being able to sweep the specimen with a beam of electrons, thus scanning it, like the name of the biological microscope implies.
These electrons that sweep the surface of the specimen will trigger other electrons to be shot out of the specimen. The result of this is the creation of an extremely realistic three-dimensional image of the specimen. Although this biological microscope may seem infinitely advantageous, it is only able to be viewed on a photo or computer screens like the TEM and the phase-contrast microscope. The SEM can magnify up to two hundred thousand times. Both the SEM and the TEM are used for intense scientific research, and they are usually not used in a school environment. Biological microscopes are the foundation of biology and they are the builders of the future of human development. For both elementary education to mind-boggling scientific research, biological microscopes are quite a wonder of the world.