An electron microscope can only operate inside a vacuum chamber. A good vacuum, needed so that electrons do not collide with air molecules or dirt before reaching the sample and the detector coming back, would be 1e-7 Torr or below. Your sample (the object of interest) has to be small enough to be mounted on a pedestal, which is inserted into chamber where the electron beam will be. The pedestal has to have multiple degrees of freedom so the e-beam can interrogate at various angle and position. The last requirement would be that your sample does not charge up too easily, which will distort the image. Charging can be lessened with a flash of gold.
Hence, if your sample meets the requirements listed, you should be able to see its image on a monitor just as clearly as you see an object of a much larger scale, with an optical microscope. Any items that are detrimental to a vacuum formation (moist, spongy materials, for example) should probably be avoided. From an electron microscope, I have seen something as big as the compound eyes of a fly or a feature as small as 1 nm.
Electron microscope.
To see atoms or other extremely small things that you can not see in a light microscope. Even with an electron microscope, atoms are still barely visible.
electron microscope
Electron microscope
because the microscope magnifies the cell to much.
only under an electron microscope wiki it
Bacteria are generally very small - so you would need an electron microscope to see them in any detail. Under a light microscope you would probably only be able to see the overall shape.
You can see a hair fiber well using an optical microscope, but you can hardly see a dimension 100 times smaller (about 10 microns). An electron microscope can review features as small as 10 nm, about 1/100000 th of a fiber.
electron microscope owais.khaforu@yahoo.com
scanning electron microscope.
Electron microscope.
Ribosomes are very small.So have to use an electron microscope.
To see atoms or other extremely small things that you can not see in a light microscope. Even with an electron microscope, atoms are still barely visible.
A virus of 50nm would be too small to see unless an electron microscope was used because it has greater resolving power and a resolution up to .1nm. A microscope using compound light as the means of illumination could not resolve better than approx. 200nms.
An electron microscope has a much higher magnifying power and resolution than a regular light microscope. One can visualize molecules and even atoms using an electron microscope. This is not possible with a light microscope
electron microscope
electron tunneling microscope