Compound Light Microscope
The Compound Light Microscope
Commonly binocular (two eyepieces), the compound light microscope, combines the power of lenses and light to enlarge the subject being viewed.
Typically, the eyepiece itself allows for 10X or 15X magnification and when combined with the three or four objective lenses, which can be rotated into the field of view, produce higher magnification to a maximum of around 1000X generally.
The compound light microscope is popular among botanists for studying plant cells, in biology to view bacteria and parasites as well as a variety of human/animal cells.
It is a useful microscope in forensic labs for identifying drug structures.
Compound light microscopes are one of the most familiar of the different types of microscopes as they are most often found in science and biology classrooms.
Electron Microscopes
An electron microscope uses a beam of highly energetic electrons to illuminate the object. As compared to the optical microscopes, electron ones can produce highly magnified images. Electrostatic and electromagnetic lenses are used in electron microscopes. These lenses control the electron stream and focus it to a specific plane of the sample. This method is similar to that of an optical microscope, which uses light to focus on the specimen. The original version of electron microscope, called transmission electron microscope, makes use of high voltage electron beam for the formation of image. Some parts of the sample may allow the beam to pass through it, while others scatter the beam. This information about the specimen is carried by the beam, which emerges from the sample, which in turn is magnified by the lens system. Sometimes, a monitor is also attached to these devices.
Optical Microscopes
As mentioned earlier, this is the oldest and simplest form of microscope, which is otherwise known as light microscope. They use visible
Commonly binocular (two eyepieces), the compound light microscope, combines the power of lenses and light to enlarge the subject being viewed.
Typically, the eyepiece itself allows for 10X or 15X magnification and when combined with the three or four objective lenses, which can be rotated into the field of view, produce higher magnification to a maximum of around 1000X generally.
The compound light microscope is popular among botanists for studying plant cells, in biology to view bacteria and parasites as well as a variety of human/animal cells.
It is a useful microscope in forensic labs for identifying drug structures.
Compound light microscopes are one of the most familiar of the different types of microscopes as they are most often found in science and biology classrooms.
Electron Microscopes
An electron microscope uses a beam of highly energetic electrons to illuminate the object. As compared to the optical microscopes, electron ones can produce highly magnified images. Electrostatic and electromagnetic lenses are used in electron microscopes. These lenses control the electron stream and focus it to a specific plane of the sample. This method is similar to that of an optical microscope, which uses light to focus on the specimen. The original version of electron microscope, called transmission electron microscope, makes use of high voltage electron beam for the formation of image. Some parts of the sample may allow the beam to pass through it, while others scatter the beam. This information about the specimen is carried by the beam, which emerges from the sample, which in turn is magnified by the lens system. Sometimes, a monitor is also attached to these devices.
Optical Microscopes
As mentioned earlier, this is the oldest and simplest form of microscope, which is otherwise known as light microscope. They use visible