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

Find the resistance of given resistor, Q. The colour codes of a carbon resi...

Q. The colour codes of a carbon resistor are yellow, yellow, orange. Tolerance is 5%. Find the resistance. The initial yellow ring corresponds to 4. The subsequent yellow ring

What different is between photons, what different is between photons? A...

what different is between photons? Answer; the difference between photons depends to their frequency, and frequency depends to the number of CPH in structure of photon. Thus

How many sizes are there of lighting fiber optic, How many sizes are there ...

How many sizes are there of lighting fiber optic? Literally hundreds, by some microns to over an inch into diameter, multicore and solid core, and square shaped ribbons, sheet

Describe reverberation time and absorption coefficient, Describe "Reverbera...

Describe "Reverberation time" and "Absorption coefficient". Illustrate Sabine's formula for reverberation time in a closed auditorium.

Positive cliper, definetion and abstrec of positive clliper?

definetion and abstrec of positive clliper?

Explain the phenomena due to surface tension, (i)  Lead balls are spherical...

(i)  Lead balls are spherical in shape. (ii) Rain leaves and a globule of mercury placed on glass plate are spherical. (iii) Hair of shaving painting brush, when goes in wate

Disk light second in circumference were to spin at 60 rpm, Q. What would oc...

Q. What would occur if a disk one light second in circumference were to spin at 60 RPM? Answer:- 60 revolutions for each minute is one revolution per second. 1 light se

Electron distribution, Electron distribution: The atoms of a solid have...

Electron distribution: The atoms of a solid have electrons rotating in orbits around the positive nucleus. This is true of gases and liquids as well. These orbiting electrons

Explain p-type substance, P-Type Substance: When a small quantity of bo...

P-Type Substance: When a small quantity of boron or Indium (group III A elements ) is added to silicon or Germanium, holes are formed in it and it becomes good conductor of pos

Explain the principle of particle detection, Explain the principle of parti...

Explain the principle of particle detection. Draw log n -V graph showing different regions and discuss the significant physical processes taking place in these regions.

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