Magnifiers and microscopes
At some point in our lives as students, we were taken to the science laboratory. In this laboratory we find several objects, among them an object whose name is a microscope, another with a magnifying glass, etc. The latter is also called a magnifying glass.
Microscopes and magnifying glasses, used in several research areas, are intended to allow us to see objects that we cannot see with the naked eye. These devices allow us to see a larger image than the image we would see if we were looking directly at the real object. We say that the degree of resolution of the microscope is nothing more than the shortest distance at which it can distinguish two objects.
Magnifying glasses appeared in Italy around 1200 and later spread across Europe. Historically, the first optical instruments built were the magnifying glasses, and soon after, around 1200, the magnifying glasses appeared. After that date, they reached all of Europe. The first microscopes were made in the 15th century and used a single lens.
As glass lenses were refined, microscopes also gained magnifying power, although not as significantly. The magnifying power was only improved thanks to the invention of the compound microscope.
This type of equipment consists of two lenses, or two lens systems. The lenses of the compound microscope are called objective lens and ocular lens. The objective lens is a lens that is installed very close to the observed object. The ocular lens is very close to the observer's eye.
Microscopes and magnifying glasses, used in several research areas, are intended to allow us to see objects that we cannot see with the naked eye. These devices allow us to see a larger image than the image we would see if we were looking directly at the real object. We say that the degree of resolution of the microscope is nothing more than the shortest distance at which it can distinguish two objects.
Magnifying glasses appeared in Italy around 1200 and later spread across Europe. Historically, the first optical instruments built were the magnifying glasses, and soon after, around 1200, the magnifying glasses appeared. After that date, they reached all of Europe. The first microscopes were made in the 15th century and used a single lens.
As glass lenses were refined, microscopes also gained magnifying power, although not as significantly. The magnifying power was only improved thanks to the invention of the compound microscope.
This type of equipment consists of two lenses, or two lens systems. The lenses of the compound microscope are called objective lens and ocular lens. The objective lens is a lens that is installed very close to the observed object. The ocular lens is very close to the observer's eye.
The characteristics of these lenses are as follows: the objective lens forms a real image of the object; and the eyepiece magnifies the real image, forming a virtual and larger image, and it also acts as a magnifying glass, allowing you to observe the image in more detail. The final image formed is inverted and larger.
The degree of magnification of a compound microscope is actually the magnification product of each lens. For example, if we have a microscope with an ocular lens that increases 10 times, and an objective lens that increases 40 times, the final magnification product is 400 times.
The compound light microscope can have interchangeable lenses, that is, lenses that can be changed according to the needs of the situation, being possible to choose several magnifications using the same instrument. For example, if a microscope has two objective lenses (one with a magnification of 10 and one with a magnification of 100 times) and two ocular lenses (one with a magnification of 3 and the other with a magnification of 10), the final magnification of the microscope may reach 1000 times.
To function properly, microscopes still have a system to illuminate the object being observed. Modern optical microscopes also use two ocular lenses, to allow three-dimensional vision.
The degree of magnification of a compound microscope is actually the magnification product of each lens. For example, if we have a microscope with an ocular lens that increases 10 times, and an objective lens that increases 40 times, the final magnification product is 400 times.
The compound light microscope can have interchangeable lenses, that is, lenses that can be changed according to the needs of the situation, being possible to choose several magnifications using the same instrument. For example, if a microscope has two objective lenses (one with a magnification of 10 and one with a magnification of 100 times) and two ocular lenses (one with a magnification of 3 and the other with a magnification of 10), the final magnification of the microscope may reach 1000 times.
To function properly, microscopes still have a system to illuminate the object being observed. Modern optical microscopes also use two ocular lenses, to allow three-dimensional vision.