Explain about Electron microscope?

Answer Posted / minaxi gautam

Electron microscope:-It is an instrument similar in purpose to the ordinary light microscope, but with a much grater resolving power. Instead of a beam of light of illuminate the object, a parallel beam of electrons from an electron gun is used. The object which must be in the form of a very this film of the material allows the electron beam to pass through it. AN image of the object is carried in the electron beam which is focused in electrostatic focusing system to obtain magnified image. This is received on a fluorescent screen and recorded by a camera

Is This Answer Correct ?    0 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What happens to the velocity of sound with the rise of temperature?

666


What evidence is there supporting the big bang theory?

619


Explain what is density?

669


By passing current through a wire wrapped around an iron rod, william sturgeon invented the?

684


A car traveling at 30mph ( =13.4 m/s) & it slams on its brakes. ( The car is decelerated by the force of the friction 0.7..f *distance x. (Weight=mg) how far will the cargo before it stops?

618






What seven colors appear to be white when mixed together?

655


Explain what is the heterogenous?

623


What are isotopes?

790


How are amps and watts related?

667


Is a sewing needle magnetic or non magnetic?

775


dear sir i need rrb chennai Section engineer S & T for last 2 year question papers. Plz send my email id is gsmaliniraj@yahoo.co.in, malinisankaram@gmail.com

1763


What is meant by reflection of waves?

695


Explain how spectral lines show discrete energy levels in an atom. : quantum physics

619


Explain the use of galvanometer?

692


Explain the difference between optical zoom, digital zoom and smart zoom?

656