Explain about the term electron microscope, Physics

Assignment Help:

Explain about the term electron microscope.

Electron microscope:

An electron microscope is a form of microscope which uses electrons to illuminate a specimen and make an enlarged figure. Electron microscopes have much superior resolving power than light microscopes and can acquire much higher magnifications. Several electron microscopes can magnify specimens up to two million times, whereas the best light microscopes are restricted to magnifications of two thousand times. Both electron and light microscopes have resolution restrictions, imposed through their wavelength. The greater magnification and resolution of the electron microscope is because of the wavelength of an electron, its de Broglie wavelength, being very smaller than which of a light photon, electromagnetic radiation.

221_Electron microscope.png

Electron microscope

The electron microscope utilises electrostatic and electromagnetic lenses into forming the image through controlling the electron beam to focus this at a exact plane relative to the specimen in a way similar to how a light microscope uses glass lenses to focus light onto or by a specimen to form an image.


Related Discussions:- Explain about the term electron microscope

Assume the condition for balance in a wheatstone bridge, Assume the conditi...

Assume the condition for balance in a Wheatstone Bridge Using the principle of Wheatstone bridge, describe the method to determine the specific resistance of a wire in the laborato

Retardation plate, what do you mean by retardation plates?explain their fun...

what do you mean by retardation plates?explain their functioning by taking an example of a quarter wave plate

With all the limitations, With all the limitations, what are the uses of fi...

With all the limitations, what are the uses of fiber optics? There is an ordinary misconception about the quantity of light required for a given task: more light is not essenti

Compound pendulum, What are the types of compound pendulum? ?

What are the types of compound pendulum? ?

Illustrates principle of transmission electron microscope, Illustrates the ...

Illustrates the principle of transmission electron microscope? Principle of Transmission Electron Microscope The electron microscopes are worked onto the basis of, while a b

Explain n-type substances, N-Type Substances: When a small quantity of ...

N-Type Substances: When a small quantity of Arsenic or Phosphorous (group VA elements) is added to silicon or Germanium, it becomes good conductor of negative charges, such a s

Calculate force and angle , If two forces P & Q act at such an angle that t...

If two forces P & Q act at such an angle that the resultant force r=p. Then show that if P is doubled the new resultant is at right angle Q and it's value is ( 4P 2 -Q 2 ) 1/2

Production of electricity by light, Production of electricity by light: ...

Production of electricity by light: The Photovoltaic Cell or Solar Cell. A photovoltaic cell generates an emf when light falls onto it. Several forms of photovoltaic cell exi

Determine grating element in specturm, A beam of light of wavelength λ = ...

A beam of light of wavelength λ = 5000Å falling normally on a plane diffraction grating. The 1 st order spectrum is derived in a direction making an angle θ 1 with the norma

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd