(1)Draw a neat diagram of a monocular microscope and label the different parts. Trace diagrammatically the ...

(1)Draw a neat diagram of a monocular microscope and label the different parts. Trace
diagrammatically the path of the light rays from the mirror to the eye through the microscope.

(2)Explain Scanning & Tranmission Electron Microscope.

can someone solve it for me please.

Expert Solution

SCANNING MICROSCOPE

A scanning electron microscope (SEM) scans a focused electron beam over an object to form an image.

The electrons in the beam interact with the object and then producing various signals that are used to get information about the surface topography and composition.

The electron microscope was developed when the wavelength of light became the drawback in light microscopes. Electrons have much shorter wavelengths, enabling better resolution of object.

The scanning electron microscope (SEM) produces images by scanning the sample with a high-energy beam of electrons. As the electrons interact with the object, they produce secondary electrons, backscattered electrons, and characteristic X-rays. These signals are collected by detectors to form images which are then displayed on the computer screen.

TRANSMISSION MICROSCOPE

type of electron microscope that has three essential systems:

(1) an electron gun, which produces the electron beam, and the condenser system, which focuses the beam onto the object,

(2) the image-producing system, consisting of the objective lens, movable specimen stage, and intermediate and projector lenses, which focus the electrons passing through the specimen to form a real, highly magnified image

(3) the image-recording system, which converts the electron image into some form perceptible to the human eye.

Sydney Mullin answered 2 years ago

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