Optical Microscope Research Paper

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How does the microscope work? How does it use light?
Optical microscope: a microscope that uses visible light in order to create images.
The optical or light microscope consists of different parts (as you see in the picture), and each piece have a different name. The eyepiece lens consists of one lens, and that’s where you look through. The tube below the eyepiece lens connects it with the objective lenses (ultimate power of magnification). The eyepiece lens has a magnification of 10x (likely to most basic optical microscopes), and the objective lenses- which can consists of three to four lenses, usually have the magnification power of 4x, 10x, 40x and 100x. While the eyepiece can magnify about 10x, the total magnification would be 40x, 100x, …show more content…

His name was Ernst Ruska. He found out that electrons could work as an illumination source, rather than visible light photons. The wavelength of electrons is more than thousands times shorter than the wavelength of visible light, which will then contribute with higher magnification. The wavelength of visible light (of approximately 10-6m), limits the possible maximal magnification because it’s wavelength is longer than the wavelength of electrons. With help from the beam of electrons, the electron microscope has the ability to expose the structure of the object itself. For example, an atom could be clearly seen (with full details) with this high technical electron microscope.
The electron microscope do have a greater resolving power, which means that it’s possible to see extremely tiny objects with finer details, for example, an atom (10-10). Ordinary high technical electron microscopes are capable of a resolution of 1 nm (one nanometer = 1 x 10-9 m = 1/1,000,000,000).
There are two specific variants of electron microscopes; scanning electron microscope (SEM) and transmission electron microscope

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